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Li J, Dong L, Fan M, Shangguan Z. Long-term vegetation restoration promotes lignin phenol preservation and microbial anabolism in forest plantations: Implications for soil organic carbon dynamics. Sci Total Environ 2024; 928:172635. [PMID: 38643876 DOI: 10.1016/j.scitotenv.2024.172635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/15/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Vegetation restoration contributes to soil organic carbon (C; SOC) sequestration through the accumulation of plant and microbial residues, but the mechanisms underlying this microbially mediated process are not well resolved. To depict the dynamics of plant- and microbial-derived C in restored forest ecosystems, soil samples were collected from Robinia pseudoacacia plantations of different stand ages (15, 25, 35, 45 years old) established on degraded wheat fields. The results showed that the degree of lignin phenol oxidation decreased with increasing stand age (P < 0.05), and hemicellulose-degrading genes were detected at higher relative abundances than other functional gene categories, indicating selective preservation of recalcitrant lignin phenols. Despite both glucosamine (R2 = 0.61, P < 0.001) and muramic acid (R2 = 0.37, P < 0.001) contents trending upward over time, fungal residual C accounted for a greater proportion of SOC compared with bacterial residual C. Accordingly, fungal residual C, which exhibited a similar response pattern as total microbial residual C to vegetation restoration, was considered a major contributor to the SOC pool. These results provided evidence that long-term vegetation restoration enhanced SOC sequestration in R. pseudoacacia forest by promoting the preservation of plant-derived lignin phenols and concomitant microbial anabolism. Partial least squares-discriminant analysis identified two important ecological clusters (i.e., modules) in the fungal network that profoundly influenced lignin phenol oxidation (P < 0.05) and microbial residual C accumulation (P < 0.01). Among the dominant taxa in microbial networks, the bacterial phyla Proteobacteria and Acidobacteriota had potential to degrade recalcitrant C compounds (e.g., cellulose, lignin), whereas the fungal phylum Ascomycota could outcompete for labile C fractions (e.g., dissolved organic C). Findings of this study can enable a mechanistic understanding of SOC stability driven by microbial turnover in restored forest ecosystems.
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Affiliation(s)
- Jiajia Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Lingbo Dong
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Miaochun Fan
- Department of Grassland Science, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Zhouping Shangguan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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Zhao D, Bi H, Wang N, Liu Z, Hou G, Huang J, Song Y. Does increasing forest age lead to greater trade-offs in ecosystem services? A study of a Robinia pseudoacacia artificial forest on the Loess Plateau, China. Sci Total Environ 2024; 926:171737. [PMID: 38508272 DOI: 10.1016/j.scitotenv.2024.171737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 03/13/2024] [Accepted: 03/13/2024] [Indexed: 03/22/2024]
Abstract
Artificial forest ecosystems offer various ecosystem services (ES) and help mitigate climate change effects. Trade-offs or synergies exist among ES in artificial forests. Although forest age influences ES and ecosystem processes, the long-term dynamics of trade-offs among ES in artificial forests and during vegetation restorations remain unclear, complicating vegetation and sustainable management. We studied a Robinia pseudoacacia plantation on the Loess Plateau, China, with a restoration time of 10-44 years. The entropy weight method was used to assess five ES (carbon sequestration, water conservation, soil conservation, understory plant diversity, and runoff and sediment reduction) and investigate how ES change with forest age. The root mean square deviation (RMSD) was used to quantify the trade-offs among ES, and redundancy analysis (RDA) analysis was used to identify the key factors influencing the ES and trade-offs. The results showed that (1) as forest age increased, ES scores initially increased and then decreased. The optimal range for ES values was observed during the middle-aged to mature stages of the forest. (2) Before reaching maturity, the planted forests primarily delivered services related to water conservation and runoff and sediment reduction. (3) In young forests, ES showed a synergistic relationship (RMSD = 0.06), whereas trade-offs occurred in forests at other ages. The largest trade-off was observed in middle-aged forests. (4) The ES pairs with the dominant trade-offs in planted forests differed at different forest age stages. The largest trade-off occurred between carbon sequestration and water conservation (RMSD = 0.28). RDA analysis showed that understory vegetation coverage had a positive correlation with all ES. The ES indicators that significantly (P < 0.001) affected the water‑carbon trade-off were tree carbon storage, soil organic carbon storage, soil total nitrogen, and soil total phosphorus. Thus, the water and carbon relationship must be balanced, and the key factors affecting ES trade-offs in forest management must be regulated to support ES multifunctionality.
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Affiliation(s)
- Danyang Zhao
- Beijing Forestry University, Beijing 100083, China
| | - Huaxing Bi
- Beijing Forestry University, Beijing 100083, China; State Key Laboratory of Efficient Production of Forest Resources, Beijing 100083, China; Ji County Station, Chinese National Ecosystem Research Network (CNERN), Beijing 100083, China; Key Laboratory of National Forestry and Grassland Administration on Soil and Water Conservation, Beijing Engineering Research Centre of Soil and Water Conservation, Engineering Research Center of Forestry Ecological Engineering, Ministry of Education (Beijing Forestry University), Beijing 100083, China.
| | - Ning Wang
- Beijing Forestry University, Beijing 100083, China
| | - Zehui Liu
- Beijing Forestry University, Beijing 100083, China
| | - Guirong Hou
- College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
| | - Jinghan Huang
- Southwest Survey and Planning Institute of National Forestry and Grassland Administration, Kunming 650031, China
| | - Yilin Song
- Beijing Forestry University, Beijing 100083, China
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Liu R, Hu B, Dannenmann M, Giesemann A, Geilfus CM, Li C, Gao L, Flemetakis E, Haensch R, Wang D, Rennenberg H. Significance of phosphorus deficiency for the mitigation of mercury toxicity in the Robinia pseudoacacia L.- rhizobia symbiotic association. J Hazard Mater 2024; 467:133717. [PMID: 38325100 DOI: 10.1016/j.jhazmat.2024.133717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 01/10/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
Nitrogen (N2)-fixing legumes can be used for phytoremediation of toxic heavy metal Mercury (Hg) contaminated soil, but N2-fixation highly relies on phosphorus (P) availability for nodule formation and functioning. Here, we characterized the significance of P deficiency for Hg accumulation and toxicity in woody legume plants. Consequences for foliar and root traits of rhizobia inoculation, Hg exposure (+Hg) and low P (-P) supply, individually and in combination were characterized at both the metabolite and transcriptome levels in seedlings of two Robinia pseudoacacia L. provenances originating from contrasting climate and soil backgrounds, i.e., GS in northwest and the DB in northeast China. Our results reveal that depleted P mitigates the toxicity of Hg at the transcriptional level. In leaves of Robinia depleted P reduced oxidative stress and improved the utilization strategy of C, N and P nutrition; in roots depleted P regulated the expression of genes scavenging oxidative stress and promoting cell membrane synthesis. Rhizobia inoculation significantly improved the performance of both Robinia provenances under individual and combined +Hg and -P by promoting photosynthesis, increasing foliar N and P content and reducing H2O2 and MDA accumulation despite enhanced Hg uptake. DB plants developed more nodules, had higher biomass and accumulated higher Hg amounts than GS plants and thus are suggested as the high potential Robinia provenance for future phytoremediation of Hg contaminated soils with P deficiency.
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Affiliation(s)
- Rui Liu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, China; College of Resources and Environment, Academy of Agriculture Sciences, Southwest University, Chongqing 400715, China
| | - Bin Hu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, China.
| | - Michael Dannenmann
- Institute for Meteorology and Climate Research, Atmospheric Environmental Research (IMK-IFU), Karlsruhe Institute of Technology (KIT), Kreuzeckbahnstrasse 19, 82467 Garmisch-Partenkirchen, Germany
| | - Anette Giesemann
- Thünen Institute of Climate-Smart Agriculture, Federal Research Institute for Rural Areas, Forestry and Fisheries, 38116 Braunschweig, Germany
| | - Christoph-Martin Geilfus
- Department of Soil Science and Plant Nutrition, Hochschule Geisenheim University, 65366 Geisenheim, Germany
| | - Canbo Li
- Shanghai OE Biotech. Co., Ltd., No. 1188, Lianhang Rd., Minhang district, Shanghai 201212, China
| | - Lan Gao
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, China; College of Resources and Environment, Academy of Agriculture Sciences, Southwest University, Chongqing 400715, China
| | - Emmanouil Flemetakis
- Laboratory of Molecular Biology, Department of Biotechnology, Agricultural University of Athens, 11855 Athens, Greece
| | - Robert Haensch
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, China; Institute for Plant Biology, Technische Universität Braunschweig, Humboldtstraße 1, D-38106 Braunschweig, Germany
| | - Dingyong Wang
- College of Resources and Environment, Academy of Agriculture Sciences, Southwest University, Chongqing 400715, China
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, China
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Ren W, Tian L, Querejeta JI. Tight coupling between leaf δ 13 C and N content along leaf ageing in the N 2 -fixing legume tree black locust ( Robinia pseudoacacia L.). Physiol Plant 2024; 176:e14235. [PMID: 38472162 DOI: 10.1111/ppl.14235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 01/29/2024] [Accepted: 02/08/2024] [Indexed: 03/14/2024]
Abstract
N2 -fixing legumes can strongly affect ecosystem functions by supplying nitrogen (N) and improving the carbon-fixing capacity of vegetation. Still, the question of how their leaf-level N status and carbon metabolism are coordinated along leaf ageing remains unexplored. Leaf tissue carbon isotopic composition (δ13 C) provides a useful indicator of time-integrated intrinsic water use efficiency (WUEi). Here, we quantified the seasonal changes of leaf δ13 C, N content on a mass and area basis (Nmass , Narea , respectively), Δ18 O (leaf 18 O enrichment above source water, a proxy of time-integrated stomatal conductance) and morphological traits in an emblematic N2 -fixing legume tree, the black locust (Robinia pseudoacacia L.), at a subtropical site in Southwest China. We also measured xylem, soil and rainwater isotopes (δ18 O, δ2 H) to characterize tree water uptake patterns. Xylem water isotopic data reveal that black locust primarily used shallow soil water in this humid habitat. Black locust exhibited a decreasing δ13 C along leaf ageing, which was largely driven by decreasing leaf Nmass , despite roughly constant Narea . In contrast, the decreasing δ13 C along leaf ageing was largely uncoupled from parallel increases in Δ18 O and leaf thickness. Leaf N content is used as a proxy of leaf photosynthetic capacity; thus, it plays a key role in determining the seasonality in δ13 C, whereas the roles of stomatal conductance and leaf morphology are minor. Black locust leaves can effectively adjust to changing environmental conditions along leaf ageing through LMA increases and moderate stomatal conductance reduction while maintaining constant Narea to optimize photosynthesis and carbon assimilation, despite declining leaf Nmass and δ13 C.
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Affiliation(s)
- Wei Ren
- Institute of International Rivers and Eco-Security, Yunnan University, Kunming, China
- Chongqing Key Laboratory of Karst Environment, School of Geographical Sciences, Southwest University, Chongqing, China
| | - Lide Tian
- Institute of International Rivers and Eco-Security, Yunnan University, Kunming, China
- Yunnan Key Laboratory of International Rivers and Transboundary Eco-security, Kunming, China
| | - José Ignacio Querejeta
- Centro de Edafología y Biología Aplicada del Segura, Consejo Superior de Investigaciones Científicas (CEBAS, CSIC), Murcia, Spain
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Zhang F, Zou D, Wang J, Xiong B, Gao L, Guo P, Du H, Ma M, Rennenberg H. Co-inoculation of rhizobia and AMF improves growth, nutrient uptake, and cadmium resistance of black locust grown in sand culture. Physiol Plant 2024; 176:e14205. [PMID: 38439620 DOI: 10.1111/ppl.14205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 01/05/2024] [Accepted: 01/18/2024] [Indexed: 03/06/2024]
Abstract
Rhizobia and arbuscular mycorrhizal fungi (AMF) are symbiotic microorganisms important for plants grown in nutrient-deficient and heavy metal-contaminated soils. However, it remains unclear how plants respond to the coupled stress by heavy metal and nitrogen (N) deficiency under co-inoculation. Here, we investigated the synergistic effect of Mesorhizobium huakuii QD9 and Funneliformis mosseae on the response of black locust (Robinia pseudoacacia L.) grown in sand culture to cadmium (Cd) under N deficiency conditions. The results showed that single inoculation of AMF improved the growth and Cd resistance of black locust, co-inoculation improved the most. Compared to non-inoculated controls, co-inoculation mediated higher biomass and antioxidant enzyme activity, reduced oxidative stress, and promoted nodulation, mycorrhizal colonization, photosynthetic capacity, and N, P, Fe and Mg acquisition when exposed to Cd. This increase was significantly higher under N deficiency compared to N sufficiency. In addition, the uptake of Cd by co-inoculated black locust roots increased, but Cd translocation to the above-ground decreased under both N deficiency and sufficiency. Thus, in the tripartite symbiotic system, not merely metabolic processes but also Cd uptake increased under N deficiency. However, enhanced Cd detoxification in the roots and reduced allocation to the shoot likely prevent Cd toxicity and rather stimulated growth under these conditions.
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Affiliation(s)
- Fusen Zhang
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Dongchen Zou
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Jueying Wang
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Bingcai Xiong
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Lan Gao
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Pan Guo
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Hongxia Du
- Chongqing Key Laboratory of Bio-resource for Bioenergy, College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Ming Ma
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
- Chongqing Key Laboratory of Bio-resource for Bioenergy, College of Resources and Environment, Southwest University, Chongqing, P. R. China
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, Chongqing, P. R. China
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Zhao M, Sun Y, Liu S, Li Y, Chen Y. Effects of stand density on the structure of soil microbial functional groups in Robinia pseudoacacia plantations in the hilly and gully region of the Loess Plateau, China. Sci Total Environ 2024; 912:169337. [PMID: 38103600 DOI: 10.1016/j.scitotenv.2023.169337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/10/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
Elucidating the responses of soil microbial functional groups to changes in stand density is crucial for understanding the sustainability of forest development. In this study, we obtained soil samples from Robinia pseudoacacia plantations of three different stand densities (low, middle, and high densities of 750, 1125, and 1550 trees ha-1, respectively) in the hilly and gully region of the Loess Plateau, China. We sought to determine the effects of stand density on the structure of soil microbial functional groups. Stand density had no significant effects on species diversity indices of fungal trophic modes or bacterial functional groups involved in carbon (C) cycling and nitrogen (N) cycling. However, differences in stand density substantially altered the composition of fungal functional groups. In low-density plantations, saprophytic fungi were the main trophic mode, with a high relative abundance of ∼62 %, whereas the fungal communities associated with middle- and high-density plantations were dominated by other fungi with a combined trophic mode, which accounted for ∼43 % and ∼41 % of the fungal trophic modes, respectively. Furthermore, we detected increases in the relative abundance of plant pathogens, nitrifiers, and nitrous oxide-denitrifying bacteria with increasing stand density. Results of the Monte Carlo test showed that soil pH influenced the composition of soil fungal (but not bacterial) groups. These findings suggested that a high density of trees might inhibit the decomposition of recalcitrant organic material and stimulate nitrous oxide emission, consequently decreasing soil nutrient availability and stimulating soil N loss. Moreover, high-density stands might increase the potential risk for plant disease. Overall, the present study suggested that reducing stand density to coverage between 750 and 1125 trees ha-1 would increase soil nutrient availability and prevent N loss from the soil. To verify these suppositions, further research is needed to determine the links between microbial functional groups composition and soil biogeochemistry.
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Affiliation(s)
- Min Zhao
- Institute of Soil and Water Conservation, State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Yarong Sun
- Institute of Soil and Water Conservation, State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Shaohua Liu
- Institute of Soil and Water Conservation, State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Yichun Li
- Institute of Soil and Water Conservation, State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Yunming Chen
- Institute of Soil and Water Conservation, State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China.
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Sun J, Rong Z, Yang L, Zhu Q, Yuan Y, Feng Z, Li L, Li N, Zhang L, Guo S. Effects of AMF inoculation on the growth, photosynthesis and root physiological morphology of root-pruned Robinia pseudoacacia seedlings. Tree Physiol 2024; 44:tpad130. [PMID: 37847604 DOI: 10.1093/treephys/tpad130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 09/21/2023] [Accepted: 10/11/2023] [Indexed: 10/19/2023]
Abstract
Root pruning hinders the absorption and utilization of nutrients and water by seedlings in the short term. Arbuscular mycorrhizal fungi (AMF) are an important source of nutrient and water for seedlings except for the root system. However, the mechanism by which AMF affect the physiological growth of seedlings after root pruning has rarely been studied. In this study, a pot experiment was conducted through a three-compartment partition system to clarify the effects of Funneliformis mosseae (F. mosseae) strain BGC XJ07A on the physiological growth of root-pruned Robinia pseudoacacia seedlings. Five root pruning treatments (zero, one-fifth, one-fourth, one-third and one-half of the taproot length were removed) were applied to noninoculated seedlings and those inoculated with F. mosseae. The results showed that the presence of F. mosseae significantly increased the shoot and root biomasses, leaf photosynthetic rate, stomatal conductance and transpiration rate. The root projected area, root surface area, average root diameter, root density, root volume and number of root tips of the inoculated seedlings were higher than those without inoculation in all root pruning treatments. The root cytokinin, gibberellins and indole-3-acetic acid concentrations, but root abscisic acid concentration, were higher than those measured in the absence of inoculation in all root pruning treatments. Moreover, the changes in the root endogenous hormone concentrations of the seedlings were closely related to the root morphological development and seedling biomass. The AMF increased the soil available nitrogen, soil available phosphorus, soil available potassium and soil organic matter concentrations compared with the noninoculated treatment. These results indicate that AMF can alleviate the adverse effects of root pruning on the physiological growth of R. pseudoacacia and soil properties, and can provide a basis for AMF application to forest cultivation and the sustainable development of forest ecosystems.
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Affiliation(s)
- Jinhua Sun
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Zheng Rong
- Henan Ecological and Environmental Monitoring Center, No. 10 Xueli Road, Zhengdong New District, Zhengzhou City, Henan Province, Zhengzhou 450046, China
| | - Liu Yang
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Qimeng Zhu
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Yabo Yuan
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Zhipei Feng
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Limei Li
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Nixuan Li
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Lei Zhang
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
| | - Shaoxin Guo
- College of Forestry, Henan Agricultural University, Wenhua Road of Jinshui District in Zhengzhou City of Henan Province, Zhengzhou 450002, China
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Zhou J, Qi A, Wang T, Zhang S, Liu J, Lu Y. Exogenous chelating agents influence growth, physiological characteristics and cell ultrastructure of Robinia pseudoacacia seedlings under lead-cadmium stress. Tree Physiol 2024; 44:tpad120. [PMID: 37756614 DOI: 10.1093/treephys/tpad120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/16/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Abstract
Heavy metal pollution of soil, especially by lead (Pb) and cadmium (Cd), is a serious problem worldwide. The application of safe chelating agents, combined with the growing of tolerant trees, constitutes an approach for phytoremediation of heavy-metal-contaminated soil. This study aimed to determine whether the two safe chelators, tetrasodium glutamate diacetate (GLDA) and citric acid (CA), could improve the phytoremediation capacity of black locust (Robinia pseudoacacia L.) in a Pb-Cd-contaminated soil and to find the key factors affecting the biomass accumulation of stressed black locust. In Pb- and Cd-stressed black locust plants, medium- and high-concentration GLDA treatment inhibited the growth, chlorophyll synthesis and maximum photochemical efficiency (Fv/Fm), promoted the absorption of Pb and Cd ions and resulted in the shrinkage of chloroplasts and starch grains when compared with those in Pb- and Cd-stressed plants that were not treated with GLDA. The effects of CA on plant growth, ion absorption, chlorophyll content, chlorophyll fluorescence and organelle size were significantly weaker than those of GLDA. The effect of both agents on Cd absorption was greater than that on Pb absorption in all treatments. The levels of chlorophyll a and plant tissue Cd and rates of starch metabolism were identified as the key factors affecting plant biomass accumulation in GLDA and CA treatments. In the future, GLDA can be combined with functional bacteria and/or growth promoters to promote the growth of Pb- and Cd-stressed plants and to further improve the soil restoration efficiency following pollution by heavy metals. Application of CA combined with the growing of black locust plants has great potential for restoring the Cd-polluted soil. These findings also provide insights into the practical use of GLDA and CA in phytoremediation by R. pseudoacacia and the tolerant mechanisms of R. pseudoacacia to Pb-Cd-contaminated soil.
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Affiliation(s)
- Jian Zhou
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
- Henan Province Engineering Center of Horticulture Plant Resource Utilization and Germplasm Enhancement, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
| | - Anguo Qi
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
- Henan Province Engineering Center of Horticulture Plant Resource Utilization and Germplasm Enhancement, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
| | - Ting Wang
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
| | - Songyan Zhang
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
| | - Jinxiu Liu
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
| | - Yabo Lu
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, No. 90 Hualan Road, Hongqi District, Xinxiang, Henan Province 453003, China
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Li J, Fan M, Wei Z, Zhang K, Ma X, Shangguan Z. Broad environmental adaptation of abundant microbial taxa in Robinia pseudoacacia forests during long-term vegetation restoration. Environ Res 2024; 242:117720. [PMID: 37996008 DOI: 10.1016/j.envres.2023.117720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/31/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023]
Abstract
Vegetation restoration has significant impacts on ecosystems, and a comprehensive understanding of microbial environmental adaptability could facilitate coping with ecological challenges such as environmental change and biodiversity loss. Here, abundant and rare soil bacterial and fungal communities were characterized along a 15-45-year chronosequence of forest vegetation restoration in the Loess Plateau region. Phylogenetic-bin-based null model analysis (iCAMP), niche breadth index, and co-occurrence network analysis were used to assess microbial community assembly and environmental adaptation of a Robinia pseudoacacia plantation under long-term vegetation restoration. The drift process governed community assembly of abundant and rare soil fungi and bacteria. With increasing soil total phosphorus content, the relative importance of drift increased, while dispersal limitation and heterogeneous selection exhibited opposite trends for abundant and rare fungi. Rare soil fungal composition dissimilarities were dominated by species replacement processes. Abundant microbial taxa had higher ecological niche width and contribution to ecosystem multifunctionality than rare taxa. Node property values (e.g., degree and betweenness) of abundant microbial taxa were substantially higher than those of rare microbial taxa, indicating abundant species occupied a central position in the network. This study provides insights into the diversity and stability of microbial communities during vegetation restoration in Loess Plateau. The findings highlight that abundant soil fungi and bacteria have broad environmental adaptation and major implications for soil multifunctionality under long-term vegetation restoration.
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Affiliation(s)
- Jiajia Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
| | - Miaochun Fan
- Department of Grassland Science, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhenhao Wei
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Kang Zhang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Xing Ma
- Department of Grassland Science, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhouping Shangguan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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Luo XF, Liu MY, Tian ZX, Xiao Y, Zeng P, Han ZY, Zhou H, Gu JF, Liao BH. Physiological tolerance of black locust ( Robinia pseudoacacia L.) and changes of rhizospheric bacterial communities in response to Cd and Pb in the contaminated soil. Environ Sci Pollut Res Int 2024; 31:2987-3003. [PMID: 38079046 DOI: 10.1007/s11356-023-31260-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/22/2023] [Indexed: 01/18/2024]
Abstract
Woody plants possess great potential for phytoremediation of heavy metal-contaminated soil. A pot trial was conducted to study growth, physiological response, and Cd and Pb uptake and distribution in black locust (Robinia pseudoacacia L.), as well as the rhizosphere bacterial communities in Cd and Pb co-contaminated soil. The results showed that R. pseudoacacia L. had strong physiological regulation ability in response to Cd and Pb stress in contaminated soil. The total chlorophyll, malondialdehyde (MDA), soluble protein, and sulfhydryl contents, as well as antioxidant enzymes (superoxide dismutase, peroxidase, catalase) activities in R. pseudoacacia L. leaves under the 40 mg·kg-1 Cd and 1000 mg·kg-1 Pb co-contaminated soil were slightly altered. Cd uptake in R. pseudoacacia L. roots and stems increased, while the Pb content in the shoots of R. pseudoacacia L. under the combined Cd and Pb treatments decreased in relative to that in the single Pb treatments. The bacterial α-diversity indices (e.g., Sobs, Shannon, Simpson, Ace, and Chao) of R. pseudoacacia L. rhizosphere soil under Cd and Pb stress were changed slightly relative to the CK treatment. However, Cd and Pb stress could significantly (p < 0.05) alter the rhizosphere soil microbial communities. According to heat map and LEfSe (Linear discriminant analysis Effect Size) analysis, Bacillus, Sphingomonas, Terrabacter, Roseiflexaceae, Paenibacillus, and Myxococcaceae at the genus level were notably (p < 0.05) accumulated in the Cd- and/or Pb-contaminated soil. Furthermore, the MDA content was notably (p < 0.05) negatively correlated with the relative abundances of Isosphaeraceae, Gaiellales, and Gemmatimonas. The total biomass of R. pseudoacacia L. was positively (p < 0.05) correlated with the relative abundances of Xanthobacteraceae and Vicinamibacreraceae. Network analysis showed that Cd and Pb combined stress might enhance the modularization of bacterial networks in the R. pseudoacacia L. rhizosphere soil. Thus, the assembly of the soil bacterial communities in R. pseudoacacia L. rhizosphere may improve the tolerance of plants in response to Cd and/or Pb stress.
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Affiliation(s)
- Xu-Feng Luo
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Meng-Yu Liu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Zi-Xi Tian
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Yue Xiao
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Peng Zeng
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China.
- Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China.
| | - Zi-Yu Han
- Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China
| | - Hang Zhou
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
- Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Jiao-Feng Gu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
- Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Bo-Han Liao
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
- Hunan Engineering Laboratory for Control of Rice Quality and Safety, Central South University of Forestry and Technology, Changsha, 410004, China
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Zhang Z, Wang X, Guo S, Li Z, He M, Zhang Y, Li G, Han X, Yang G. Divergent patterns and drivers of leaf functional traits of Robinia pseudoacacia and Pinus tabulaeformis plantations along a precipitation gradient in the Loess plateau, China. J Environ Manage 2023; 348:119318. [PMID: 37857219 DOI: 10.1016/j.jenvman.2023.119318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/30/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023]
Abstract
Changes in precipitation patterns in arid and semi-arid regions can reshape plant functional traits and significantly affect ecosystem functions. However, the synchronous responses of leaf economical, anatomical, photosynthetic, and biochemical traits to precipitation changes and their driving factors have rarely been investigated, which hinders our understanding of plants' ecological adaptation strategies to drought tolerance in arid areas. Therefore, the leaf traits of two typical plantations (Robinia pseudoacacia, RP and Pinus tabulaeformis, PT) along the precipitation gradient in the Loess Plateau, including economical, anatomical, photosynthetic, and biochemical traits, were investigated in this study. The results show that the leaf photosynthetic traits of RP and PT increase along the precipitation gradient, whereas leaf biochemical traits decrease. The anatomical traits of PT decrease with increasing precipitation, whereas no significant variation was observed for RP. Random Forest analysis show that LNC, LDMC, Chl, and PRO are leaf traits that significantly vary with the precipitation gradient in both plantations. Correlation analysis reveals that the traits coordination of RP is better than that of PT. The LMG model was used to determine driving factors. The results suggest that MAP explains the variation of PT leaf traits better (30.38%-36.78%), whereas SCH and SPH contribute more to the variation of RP leaf traits (20.88%-41.76%). In addition, the piecewise Structural Equation Model shows that the climate and soil physical and chemical properties directly affect the selected leaf functional traits of RP, whereas only the soil chemical properties directly affect the selected leaf functional traits of PT. The results of this study contribute to the understanding of the ecological adaptation of plants to environmental gradients and highlight that correlations among leaf traits should be considered when predicting plant adaptation strategies under future global change scenarios.
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Affiliation(s)
- Zhenjiao Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
| | - Xing Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
| | - Shujuan Guo
- A School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, PR China.
| | - Zhenxia Li
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
| | - Mengfan He
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
| | - Yunlong Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
| | - Guixing Li
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
| | - Xinhui Han
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China.
| | - Gaihe Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, PR China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, PR China
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Zhang Y, Ma L, He J, Dang CY, Zou CL, Cui YS. [Water holding characteristics of litters of typical forest in loess area of Western Shanxi Province, China]. Ying Yong Sheng Tai Xue Bao 2023; 34:3177-3183. [PMID: 38511355 DOI: 10.13287/j.1001-9332.202312.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
It is of great significance to investigate the volume and water holding characteristics of litters for the accurate evaluation of forest water conservation function. With Pinus tabuliformis, Robinia pseudoacacia, Populus davidiana, Quercus wutaishanica and Platycladus orientalis as the research objects in the Loess Plateau of Western Shanxi Province, we analyzed the thickness of undecomposed layer and semi-decomposed layer, the volume of litter, and the relationship between the litter water-holding characteristics and the immersion time for different stands by the combination of sample survey and indoor immersion test. The results showed that the total thickness of litter layer was 4.06-5.12 cm, with the thickest layer in R. pseudoacacia forest and the thinnest in P. tabuliformis forest. The storage volume of litter was the largest in Q. wutaishanica (24.39 t·hm-2), followed by P. davidiana (23.64 t·hm-2), P. orientalis (22.51 t·hm-2), and R. pseudoacacia (22.48 t·hm-2), and the smallest in P. tabuliformis (20.42 t·hm-2). The volume in the undecomposed layer was less than that in the semi-decomposed layer. The maximum water holding of litter was 40.41-79.56 t·hm-2, with the highest of Q. wutaishanica and the lowest of P. tabuliformis. The effective interception rate of litter was 108%-188%. The changes of water capacity and water absorption rate of litter were most rapid in Q. wutaishanica, P. davidiana and R. pseudoacacia, and the changes were faster in the semi-decomposed layer than in the undecomposed layer. The water-holding capacity of litter in five forests was following an order of Q. wutaishanica>P. davidiana>R. pseudoacacia>P. orientalis>P. tabuliformis.
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Affiliation(s)
- Yue Zhang
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Lan Ma
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
- Jixian National Forest Ecosystem Observation and Research Station, National Ecosystem Research Network of China, Beijing Forestry University, Beijing 100083, China
| | - Jiao He
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Cai-Yu Dang
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Chun-Lei Zou
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Yong-Sheng Cui
- College of Water Sciences, Beijing Normal University, Beijing 100875, China
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Guo Y, Yao JF, Dong Y, Yan J, Yang N, Feng YH, Wei X, Liang WJ. Root distribution characteristics of monoculture and mixture of Pinus tabuliformis and Robinia pseudoacacia plantation. Ying Yong Sheng Tai Xue Bao 2023; 34:2881-2888. [PMID: 37997398 DOI: 10.13287/j.1001-9332.202311.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
In this study, we analyzed the vertical distribution characteristics of root biomass density, root length density, root surface area density in monoculture and mixture of Pinus tabuliformis and Robinia pseudoacacia plantations in Caijiachuan small watershed of Jixian County, Shanxi. We examined their relationships with soil physical and chemical properties in different stand types. The results showed that the total root biomass density of P. tabuliformis and R. pseudoacacia in mixture was more than 75% higher than that in monoculture. Root system of P. tabuli-formis mainly distributed in shallow layer (0-40 cm), while that of R. pseudoacacia was deeper (40-80 cm). Fine roots were predominant in different diameter classes. Length density and surface area density of fine roots were in the order of R. pseudoacacia in mixture > P. tabuliformis in mixture > R. pseudoacacia stand > P. tabuliformis stand. Root biomass density of fine roots was in the order of P. tabuliformis in mixture > R. pseudoacacia in mixture > P. tabuliformis stand > R. pseudoacacia stand. In vertical profile, the total root and fine root biomass, root length and root surface area density of P. tabuliformis stand, R. pseudoacacia stand, P. tabuliformis in mixture and R. pseudoacacia in mixture showed a rule of decreasing with the increases of soil depth. Under different stand types, fine root length density, root biomass density and total root length density were positively correlated with soil total nitrogen, soil organic carbon, and soil water contents. Total root surface area density was significantly positively correlated with soil organic carbon, soil water content, and soil total nitrogen. The distribution of roots in pure and mixed stands of P. tabuliformis and R. pseudoacacia showed different patterns. Compared with the pure stand, the mixed stand had higher root biomass, soil nutrient contents, and soil water content.
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Affiliation(s)
- Yu Guo
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Jia-Feng Yao
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Yuan Dong
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Jue Yan
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Nan Yang
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Yong-Han Feng
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Xi Wei
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Wen-Jun Liang
- College of Forestry, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
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Cheng D, Jiao L, Gao G, Liu J, Chen W, Li Z, Bai Y, Wang H, Zhang L. Effects of species mixtures on soil water storage in the semiarid hilly gully region. Sci Total Environ 2023; 897:165409. [PMID: 37423278 DOI: 10.1016/j.scitotenv.2023.165409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/12/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
Mixed-species plantations are promoted to restore degraded ecosystems and improve soil quality worldwide. However, differences of soil water conditions between pure and mixed plantations are still controversial and how species mixtures affect soil water storage (SWS) was not well quantified. In this study, vegetation characteristics, soil properties and SWS were continuously monitored and quantified in three pure plantations (Armeniaca sibirica (AS), Robinia pseudoacacia (RP) and Hippophae rhamnoides (HR)) and their corresponding mixed plantations (Pinus tabuliformis-Armeniaca sibirica (PT-AS), Robinia pseudoacacia-Pinus tabuliformis-Armeniaca sibirica (RP-PT-AS), Platycladus orientalis-Hippophae rhamnoides plantation (PO-HR), Populus simonii-Hippophae rhamnoides (PS-HR)). The results found that SWS of 0-500 cm in RP (333.60 ± 75.91 mm) and AS (479.52 ± 37.50 mm) pure plantations were higher than those in their corresponding mixed plantations (p > 0.05). SWS in the HR pure plantation (375.81 ± 81.64 mm) was lower than that in its mixed plantation (p > 0.05). It is suggested that the effect of species mixing on SWS was species specific. Additionally, soil properties exerted more contributions (38.05-67.24 %) to SWS than vegetation characteristics (26.80-35.36 %) and slope topography (5.96-29.91 %) at different soil depths and the whole 0-500 cm soil profile. Furthermore, by excluding the effects of soil properties and topographic factors, plant density and height were particularly important to SWS (with standard coefficients 0.787 and 0.690 respectively). The results implied that not all the mixed plantations exhibits the better soil water conditions than the compared pure plantations, which was tightly related to species selected for mixing. Our study provides scientific support for revegetation technique improvement (structural adjustment and species optimization) in this region.
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Affiliation(s)
- Dong Cheng
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Lei Jiao
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China.
| | - Guangyao Gao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; National Observation and Research Station of Earth Critical Zone on the Loess Plateau in Shaanxi, Xi'an 710061, China
| | - Jianbo Liu
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China
| | - Weiliang Chen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; National Observation and Research Station of Earth Critical Zone on the Loess Plateau in Shaanxi, Xi'an 710061, China
| | - Zongshan Li
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; National Observation and Research Station of Earth Critical Zone on the Loess Plateau in Shaanxi, Xi'an 710061, China
| | - Yingfei Bai
- Grain to Green Project Management Office of Yan'an Government, Yan'an 716000, China
| | - Hao Wang
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Liwei Zhang
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
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Yang Y, Zhang Y, Gu D, Liu C, Wang Y, Tang S, Yin Y, Tian J. Fermentation of Robinia pseudoacacia flower for improving the antioxidation: optimized conditions, active composition, mechanism, and biotransformation process. Prep Biochem Biotechnol 2023; 53:1224-1236. [PMID: 36880129 DOI: 10.1080/10826068.2023.2185637] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Robinia pseudoacacia flower is a natural product with many biological activities, including antioxidation. To further develop its antioxidation, the extract was fermented by Aspergillus niger FFCC 3112 in the medium with carbon to nitrogen ratio of 1.4:1 and initial pH of 4.2 for 3.5 days to form the best antioxidant activity of the fermentation product by strain screening, single factor optimization, and response surface methodology. Further analysis, isolation and activity determination showed that a main chemical component, kaempferol-3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranosyl-7-O-α-L-rhamnopyranoside, in the extract was completely hydrolyzed to kaempferol-7-O-α-L-rhamnopyranoside and kaempferol with better antioxidant activity through biotransformation, which was the basis for improving the antioxidant activity of fermentation products. Moreover, the mechanism of antioxidant and the contribution of phenolic hydroxyl groups were investigated by density functional theory. The result indicated that the antioxidant capacity of kaempferol-7-O-α-L-rhamnopyranoside and kaempferol increased with the increase of solvent polarity. In high-polarity solvents, they mainly scavenge free radicals through single electron transfer followed by proton transfer.
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Affiliation(s)
- Yi Yang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, China
| | - Yunci Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Dongyu Gu
- College of Marine Science and Environment, Dalian Ocean University, Dalian, China
| | - Chang Liu
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Shanshan Tang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
| | - Yuxin Yin
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, China
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian, China
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Hu XC, Gao WT, Sun SJ, Zhang JS, Meng P, Cai JF. [Responses of tree growth and intrinsic water-use efficiency of Robinia pseudoacacia to climate factors]. Ying Yong Sheng Tai Xue Bao 2023; 34:2610-2618. [PMID: 37897267 DOI: 10.13287/j.1001-9332.202310.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/30/2023]
Abstract
We investigated tree growth in Robinia pseudoacacia plantations at Ansai in Shaanxi Province and at Ji-xian in Shanxi Province by comparing the tree-ring width, basal area increase (BAI), δ13C value, intrinsic water-use efficiency (iWUE), and stomatal regulation. We quantified the responses of tree growth and iWUE to climatic factors at each site. The tree-ring width at Ansai and Jixian decreased with stand age, whereas the BAI at Ansai increased, and that at Jixian decreased after the BAI peaked. The δ13C value and iWUE of trees at Jixian were higher than those at Ansai. The iWUE of trees at both sites was similar to the constant intercellular CO2 concentration/atmospheric CO2 concentration (Ci/Ca) scenario, indicating that the Ci of trees was elevated with increasing Ca, while the stomata remained open. The BAI at Ansai was significantly positively correlated with highest temperature in May, relative humidity in June, precipitation in August, relative humidity in September, and standardized precipitation evapotranspiration index (SPEI) in September and October of current year, but negatively correlated with temperature in June. The BAI at Jixian was significantly positively correlated with SPEI in June and July, and lowest temperature in October of current year. The iWUE of trees at Ansai was significantly positively correlated with relative humidity and precipitation in June of the current year, but negatively correlated with minimum temperature in May, relative humidity in June, and temperature and maximum temperature in July of current year. A significant positive correlation between iWUE of trees at Jixian and lowest temperature in June of current year was detected. At the annual scale, the BAI of trees at Ansai was positively correlated with precipitation and SPEI, but no significant relationship was observed for trees at Jixian. However, the iWUE of trees at both sites was significantly affected by precipitation. Path analysis showed that SPEI and minimum temperature had a direct effect on BAI and iWUE of trees at Ansai, whereas precipitation and average temperature indirectly affected BAI and iWUE through SPEI. The highest temperature had a direct effect on tree growth at Jixian, whereas precipitation, minimum temperature, and average temperature had direct effects on iWUE. These results suggested that SPEI was the main climatic factor that affected the growth of R. pseudoacacia, while Ci was an important physiological factor. Our results could provide reference for the protection and management of R. pseudoacacia plantations under climate change.
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Affiliation(s)
- Xiao-Chuang Hu
- Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration/Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037, China
- Henan Xiaolangdi Earth Critical Zone National Research Station on the Middle Yellow River, Jiyuan 454650, Henan, China
| | - Wan-Ting Gao
- Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration/Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037, China
- Henan Xiaolangdi Earth Critical Zone National Research Station on the Middle Yellow River, Jiyuan 454650, Henan, China
| | - Shou-Jia Sun
- Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration/Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037, China
- Henan Xiaolangdi Earth Critical Zone National Research Station on the Middle Yellow River, Jiyuan 454650, Henan, China
| | - Jin-Song Zhang
- Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration/Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037, China
- Henan Xiaolangdi Earth Critical Zone National Research Station on the Middle Yellow River, Jiyuan 454650, Henan, China
| | - Ping Meng
- Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration/Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037, China
- Henan Xiaolangdi Earth Critical Zone National Research Station on the Middle Yellow River, Jiyuan 454650, Henan, China
| | - Jin-Feng Cai
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forest University, Nanjing 210037, China
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Başoğlu A. Green synthesis of fluorescent carbon dots from Robinia hispida L. leaves for selective detection of Hg (II). Methods Appl Fluoresc 2023; 11:045010. [PMID: 37703892 DOI: 10.1088/2050-6120/acf97c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/13/2023] [Indexed: 09/15/2023]
Abstract
In this study, Robinia hispida L leaves (RH) was used as a precursor for the first time to synthesize fluorescent carbon dots (CDs) with stable blue fluorescence by a single-step hydrothermal synthesis method. Notably, the innovative approach eliminates the necessity for toxic chemicals or hazardous substances, marking a significant advancement in the field. The synthesized CDs demonstrate CDs demonstrates the predominance of spherical shapes with an average size of 11.63 ± 1.92 nm. The CDs not only exhibit an enhanced fluorescent efficiency with a relatively high quantum yield of up to 6.8%, but they also possess the potential for direct utilization in the selective determination of Hg(II) through fluorescence quenching, even without any functionalization. Under the optimized conditions at a pH of 7.0, a robust linear correlation was found to exist between the fluorescence intensity and the concentration of Hg (II) within the range of 5-17.5μM, exhibiting a detection limit (3σ) of 1.5μM. Additionally, this methodology was effectively employed to successfully detect Hg (II) ions in various aqueous samples, including tap water, spring water, drinking water, and a certified reference material (CRM-SA-C Sandy Soil C). The spike recoveries of 97.6%-101.6% with less than 2.7% variability were performed on all samples.
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Affiliation(s)
- Aysel Başoğlu
- Gümüşhane University, Department of Occupational Health and Safety, Faculty of Health Sciences, 29100 Gümüşhane, Turkey
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18
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Zhang C, Jia X, Zhao Y, Wang L, Wang Y. Adaptive response of flavonoids in Robinia pseudoacacia L. affected by the contamination of cadmium and elevated CO 2 to arbuscular mycorrhizal symbiosis. Ecotoxicol Environ Saf 2023; 263:115379. [PMID: 37597290 DOI: 10.1016/j.ecoenv.2023.115379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 07/06/2023] [Accepted: 08/13/2023] [Indexed: 08/21/2023]
Abstract
As a key component in non-enzyme resistance system, flavonoids play a crucial role in the plant growth and defenses, which are significantly affected by biotic and abiotic factors such as fungi, bacteria, viruses, heavy metals, and atmospheric CO2. Arbuscular mycorrhizal fungi (AMF) play an important role in enhancing plant tolerance to adverse environments, which can significantly affect the synthesis of flavonoids by forming mycorrhizal symbionts with plant roots. However, few studies explored the combined effects of AMF, elevated CO2, and heavy metals on flavonoids in plants. Here, we investigated the adaptive response of flavonoids accumulation in Robinia pseudoacacia L. seedlings affected by the contamination of cadmium (Cd) and elevated CO2 to arbuscular mycorrhizal symbiosis. The results showed that G. mosseae decreased (p < 0.05) Cd content in leaves by 62.2% under elevated CO2. Moreover, G. mosseae colonization led to significant decreases in robinin, quercetin, kaempferol and acacetin by 17.4%, 11.1%, 15.5% and 23.1% under elevated CO2 + Cd, respectively. Additionally, G. mosseae down-regulated (p < 0.05) expression levels of phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) genes under elevated CO2 + Cd, and CHS and uridine diphosphate flavonoid glucosyltransferase (UFGT) activities decreased (p < 0.05). Quercetin, kaempferol and acacetin showed positive (p < 0.05) correlation with PAL and CHS genes expression and PAL, CHS, and UFGT activities. Cadmium, C/N ratio, carotenoids, leaf biomass, total chlorophyll, P, and starch in leaves and G. mosseae colonization rate in roots influenced (p < 0.05) flavonoids content. Overall, G. mosseae reduced flavonoids synthesis by down-regulating gene expression levels and activities of key enzymes under elevated CO2 + Cd. The results improved our understanding of the regulation of AMF on non-enzymatic resistance of plants grown in heavy metal-contaminated soils under increasing atmospheric CO2 scenarios.
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Affiliation(s)
- Chunyan Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Xia Jia
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China.
| | - Yonghua Zhao
- School of Land Engineering, Chang'an University, Xi'an 710054, PR China
| | - Lu Wang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Yunjie Wang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
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19
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Liu M, Yang C, Mu R. Effect of soil water-phosphorus coupling on the photosynthetic capacity of Robinia pseudoacacia L. seedlings in semi-arid areas of the Loess Plateau, China. Environ Monit Assess 2023; 195:932. [PMID: 37432491 DOI: 10.1007/s10661-023-11574-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 06/30/2023] [Indexed: 07/12/2023]
Abstract
Afforestation can improve soil erosion in the ecologically fragile areas of the Loess Plateau; however, the amount of water and phosphorus fertilizer that can promote vegetation survival is unclear, which hinders the improvement of the local ecological environment and the waste of water and fertilizer. In this study, based on field surveys, water and fertilizer control tests on Robinia pseudoacacia L. seedlings in experimental fields, and fitting CO2 response curves to R. pseudoacacia seedlings using a Li-6400 portable photosynthesizer, we measured their leaf nutrient contents and calculated resource use efficiency. The results showed that (1) under the same moisture gradient, except for photosynthetic phosphorus utilization efficiency (PPUE), light use efficiency (LUE), water use efficiency (WUE), carbon utilization efficiency (CUE), and photosynthetic nitrogen use efficiency (PNUE) all increased with increasing phosphorus fertilizer application. Under the same phosphorus fertilizer gradient, WUE increased with decreasing water application, and LUE, CUE, PNUE, and PPUE all reached the maximum at 55-60% of field water holding capacity. (2) Net photosynthetic rate (Pn) of R. pseudoacacia seedlings increased with increasing intercellular carbon dioxide concentration (Ci), and as Ci continued to increase, the increase in Pn became slower, but no maximal electron transport rate (TPU) occurred. Under the same CO2 concentration, Pn reached a maximum at 55-60% of field water holding capacity and phosphorus fertilizer at 30 gPm-2·a-1. (3) Leaf maximum carboxylation rate (Vcmax), maximum electron transport rate (Jmax), daily respiration (Rd), stomatal conductance (Gs), and mesophyll conductance (Gm) reached their maximum at 30 gPm-2·a-1 of phosphorus fertilizer. Vcmax, Jmax, and Rd reached their maximum at 55-60% of field water holding capacity; Gs and Gm reached their maximum at 75-80% of field water holding capacity. (4) The higher the soil phosphorus content, the lower the biochemical (lb), stomatal (ls), and mesophyll (lm). With the increase of soil moisture, lb and ls are higher, and lm is lower. (5) Structural equation modeling showed that water-phosphorus coupling had a less direct effect on Rd and a more direct impact on Gs and Gm. Relative photosynthetic limitation directly affected the photosynthetic rate, indicating that water and phosphorus affected the photosynthetic rate through relative plant limitation. It was concluded that the resource use efficiency and photosynthetic capacity reached the maximum when 55-60% of field water holding capacity was maintained, and phosphorus fertilization was at 30 gP m-2·a-1. Therefore, maintaining suitable soil moisture and phosphorus fertilizer levels in the semi-arid zone of the Loess Plateau can improve the photosynthetic capacity of R. pseudoacacia seedlings.
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Affiliation(s)
- Minxia Liu
- College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China.
| | - Chunliang Yang
- College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China
| | - Ruolan Mu
- College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China
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20
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Chen M, Zhang X, Li M, Cao Y. Species mixing enhances the resistance of Robinia pseudoacacia L. to drought events in semi-arid regions: Evidence from China's Loess Plateau. Sci Total Environ 2023; 869:161796. [PMID: 36702266 DOI: 10.1016/j.scitotenv.2023.161796] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
As a potential planting strategy, species mixing increases biomass production, improves ecosystem service functions, and mitigates climate change. However, the effect of species mixing on tree growth and drought resilience in semi-arid areas remains unclear. Hence, we established tree-ring chronologies of Robinia pseudoacacia L. in pure Robinia pseudoacacia L. plantation (RP) and mixed plantations with Hippophae rhamnoides L. and Populus simonii Carr. at different proportions of 8:2 and 5:5 (RH 8:2, RH 5:5, RC 8:2, RC 5:5) in the typical semi-arid region of the Loess Plateau (LP), China. The mean annual growth, climate-growth relationships, and tree resilience (Rs) to drought, including resistance (Rt) and recovery (Rc), were analyzed using dendrochronological methods. The results showed that the growth of R. pseudoacacia L. in mixed plantations was lower when Palmer Drought Severity Index (PDSI) >0, but much higher than that in monoculture under drought stress (PDSI <0 or after drought event). Meanwhile, the relationship between PDSI and tree growth was significantly positive in the pure plantation, but weakened in the mixed plantations, indicating that species mixing alleviated drought stress to some extent. The resilience results showed that, although the Rc was higher in monoculture after drought events, species mixing could enhance Rt and mitigate the growth decline of R. pseudoacacia L. during drought events. Moreover, the Rt varied significantly among mixing species and proportions and was also affected by the magnitude and timing of drought. The RC 5:5 and RH 8:2 had higher resistance to moderate and severe drought stress. However, RC 8:2 and RH 5:5 could cope better with mild drought stress. These results indicate that species mixing can alleviate drought stress and improve the drought resistance. Therefore, it is necessary to expand species mixing to maximize plantation functions and minimize the potential impacts of warming and drought in semi-arid regions.
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Affiliation(s)
- Meng Chen
- College of forestry, Northwest A&F University, Yangling 712100, China
| | - Xu Zhang
- College of forestry, Northwest A&F University, Yangling 712100, China
| | - Ming Li
- College of forestry, Northwest A&F University, Yangling 712100, China
| | - Yang Cao
- State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A&F University, Yangling 712100, Shaanxi, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, Shaanxi, China.
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21
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Zhi R, Deng J, Xu Y, Xu M, Zhang S, Han X, Yang G, Ren C. Altered microbial P cycling genes drive P availability in soil after afforestation. J Environ Manage 2023; 328:116998. [PMID: 36516705 DOI: 10.1016/j.jenvman.2022.116998] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Soil Phosphorous (P) availability is a limiting factor for plant growth and regulates biological metabolism in plantation ecosystems. The effect of variations in soil microbial P cycling potential on the availability of soil P during succession in plantation ecosystems is unclear. In this study, a metagenomics approach was used to explore variations in the composition and diversity of microbial P genes along a 45-year recovery sequence of Robinia pseudoacacia on the Loess Plateau, as well soil properties were measured. Our results showed that the diversity of P cycling genes (inorganic P solubilization and organic P mineralization genes) increased significantly after afforestation, and the community composition showed clear differences. The gcd and ppx genes were dominant in inorganic P transformation, whereas phnM gene dominated the transformation of organic P. The abundance of genes involved in inorganic P solubilization and organic P mineralization was significantly positively correlated with P availability, particularly for phnM, gcd, ppx, and phnI genes, corresponding to the phyla Gemmatimonadetes, Acidobacteria, Bacteroidetes, and Planctomycetes. The critical drivers of the microbial main genes of soil P cycling were available P (AP) and total N (TN) in soil. Overall, these findings highlight afforestation-induced increases in microbial P cycling genes enhanced soil P availability. and help to better understand how microbial growth metabolism caused by vegetation restoration in ecologically fragile areas affects the soil P cycling.
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Affiliation(s)
- Ruochen Zhi
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Jian Deng
- College of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - Yuling Xu
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Miaoping Xu
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Shuohong Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Xinhui Han
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Gaihe Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Chengjie Ren
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province, Yangling, 712100, Shaanxi, China.
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22
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Staszak AM, Ratajczak E, Leśniewska J, Piotrowska-Niczyporuk A, Kostro-Ambroziak A. A broad spectrum of host plant responses to the actions of the gall midge: case study of Robinia pseudoacacia L. and Obolodiplosis robiniae (Haldeman). BMC Plant Biol 2023; 23:19. [PMID: 36627562 PMCID: PMC9830809 DOI: 10.1186/s12870-022-03914-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 10/12/2022] [Indexed: 06/17/2023]
Abstract
This study aims to provide insights into plant-insect interaction during the formation and development of open gall structure on the leaves of Robinia pseudoacacia during gall formation by Obolodiplosis robiniae. This was the first time such far-reaching studies were performed at a biochemical and anatomical level. The gall wall is created from a few thick cells covered with epidermis. This parenchymatous nutritive tissue is rich in starch. Sclerenchyma only occurs around the vascular bundles as a result of the lignification of the parenchyma of the bundle sheaths. The level of reactive oxygen species (ROS) in the new structure was reduced and catalase activity was inhibited, which suggests another pathway of ROS decomposition - e.g. by ascorbate or glutathione peroxidase. The gall structure was combined with an increasing level of protein and non-protein thiols. Phenols seems to be a good protective factor; whose level was lower in infected leaflets. Levels of MUFA (monosaturated fatty acids) and SFA (saturated fatty acids) rose, probably as source of food for insects. The amount of fatty acid is positively correlated with the plant response. We detected that non infected leaflets produced C6:0 (hexanoic acid) and C8:0 (octanoic acid) fatty acids connected with odor. Changes in gall color as they develop are connected with photosynthetic pigments degradation (mainly chlorophylls) where the pathway of astaxanthin transformation to fatty acid is considered to be the most important process during gall maturation. Nutritive tissue is composed mainly of octadecanoic acid (C18:0) - a main source of food for O. robiniae.
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Affiliation(s)
- Aleksandra M. Staszak
- Laboratory of Plant Physiology, Department of Plant Biology and Ecology, Faculty of Biology, University of Bialystok, Ciołkowskiego 1J, 15-245 Białystok, Poland
| | - Ewelina Ratajczak
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
| | - Joanna Leśniewska
- Laboratory of Plant Physiology, Department of Plant Biology and Ecology, Faculty of Biology, University of Bialystok, Ciołkowskiego 1J, 15-245 Białystok, Poland
| | - Alicja Piotrowska-Niczyporuk
- Laboratory of Plant Biochemistry, Department of Plant Biology and Ecology, Faculty of Biology, University of Bialystok, Ciołkowskiego 1J, 15-245 Białystok, Poland
| | - Agata Kostro-Ambroziak
- Laboratory of Insects Evolutionary Biology and Ecology, Department of Genetic and Zoology, Faculty of Biology, University of Bialystok, Ciołkowskiego 1J, 15-245 Białystok, Poland
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23
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Sikora A, Hájková K, Jurczyková T. Degradation of Chemical Components of Thermally Modified Robinia pseudoacacia L. Wood and Its Effect on the Change in Mechanical Properties. Int J Mol Sci 2022; 23:ijms232415652. [PMID: 36555291 PMCID: PMC9779709 DOI: 10.3390/ijms232415652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Currently, emphasis is placed on using environmentally friendly materials both from a structural point of view and the application of protective means. For this reason, it is advisable to deal with the thermal modification of wood, which does not require the application of protective substances, to increase its service life. The main reason for the thermal modification of black locust is that although black locust grows abundantly in our country, it has no industrial use. It is mainly used outdoors, where thermal modification could increase its resistance. This article deals with the thermal modification of black locust wood (Robinia pseudoacacia L.) and the impact of this modification on the chemical components of the wood with an overlap in the change in mechanical properties compared to untreated wood. Static (LOP, MOR, and MOE) and dynamic (IBS) bending properties were evaluated as representative mechanical properties. At the same time, the impact of thermal modification on the representation of chemical components of wood (cellulose, lignin, hemicellulose) was also tested. As a result of the heat treatment, the mechanical properties gradually decreased as the temperature increased. The highest decrease in mechanical values found at 210 °C was 43.7% for LOP and 45.1% for MOR. Thermal modification caused a decrease in the content of wood polysaccharides (the decrease in hemicelluloses content was 33.2% and the drop in cellulose was about 29.9% in samples treated at 210 °C), but the relative amount of lignin in the wood subjected to increased temperature was higher due to autocondensation, and mainly because of polysaccharide loss. Based on the correlations between chemical and mechanical changes caused by thermal modification, it is possible to observe the effects of reducing the proportions of chemical components and changes in their characteristic properties (DP, TCI) on the reduction in mechanical properties. The results of this research serve to better understand the behavior of black locust wood during thermal modification, which can primarily be used to increase its application use.
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Aghajani Bazzazi A, Adib A, Shapoori M. Plant species selection by hybrid multiple-attribute decision-making model for promoting green mining in the Sungun copper mine, Iran. Environ Sci Pollut Res Int 2022; 29:89221-89234. [PMID: 35843971 DOI: 10.1007/s11356-022-21954-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Adopting the most suitable plant species selection is a multi-dimensional problem. Many parameters affect judges' decisions. Accordingly, the present study aimed to develop a multi-attribute platform for plant species selection consisting of parameters such as aesthetic outlook, resistance in front of insects, plant disease resistance, economic efficiency, pollution prevention, erosion reduction, and growth rate. The plant species selection was performed according to the primary factors. Along with the priorities mentioned above, a multi-attribute decision-making (MADM) model was presented to define the selected species based on the secondary factors. This study used two methods (Entropy and AHP) to attribute weighting because plant species selection is highly case sensitive, and global weighting was fundamental. Therefore, attribute weighting was calculated by two objective and subjective methods, respectively. Then, the ELECTRE method was applied for ranking plant species in acidic and alkaline soil types in the Sungun copper mine of Iran. This case study results showed that Acer campestre, Robinia pseudoacacia, Juniperus communis, Betula pendula, Ulmus minor, and Rhus coriria had more priority in acidic soil type, respectively. Similarly, Juglans regia was the best type for alkaline soil, and either Ficus carica or Fraxinus excelsior is located in the following ranking. When the number of possible options was more significant, the outranking result taken by the ELECTRE method was more reliable.
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Affiliation(s)
| | - Ahmad Adib
- Department of Mining Engineering, South Tehran branch, Islamic Azad University, Tehran, Iran
| | - Maryam Shapoori
- Department of Natural Resource, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran
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25
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Zhu W, Ding C, Zhu K, Zhang W, Liang D, Wang X, Li A, Su X. Characterization of ectomycorrhizal fungal communities associated with tree species on an iron tailings deposit undergoing restoration. Environ Sci Pollut Res Int 2022; 29:84396-84409. [PMID: 35780265 PMCID: PMC9646614 DOI: 10.1007/s11356-022-21690-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Vegetation restoration is an effective method to improve the ecological environment of mine tailings, which has a profound impact on the potential ecological functions of soil fungal communities; yet, little is known about its beneficial effect on soil ectomycorrhizal fungal community. In this study, the responses of soil characteristics and soil ectomycorrhizal fungal community diversity and structure to different revegetation, as well as the contribution of soil factors to soil ectomycorrhizal community were investigated in Liaoning Province, China. As we anticipated, the presence of vegetation significantly improved most soil properties we studied. What's more, compared to Korean pine (Pinus koraiensis Sieb. et Zucc.), Chinese poplar (Populus simonii Carr), and black locust (Robinia pseudoacacia L) could better improve soil total carbon, total nitrogen, total phosphorus, and available phosphorus. In addition, soil ectomycorrhizal fungal community diversity in black locust was greater than Korean pine and Populus simonii. Nonmetric multidimensional scaling analyses indicated that soil ectomycorrhizal community significantly differed depending on different revegetation types. Thus, these results indicated that black locust could be a suitable species for the revegetation of iron mine tailings. The study provided theoretical basis for ecological restoration of iron mine tailings using local plant species.
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Affiliation(s)
- Wenxu Zhu
- College of Foresty, The University of Shenyang Agriculture, Dongling Road, Shenyang, China
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Changjun Ding
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China.
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China.
| | - Keye Zhu
- College of Foresty, The University of Shenyang Agriculture, Dongling Road, Shenyang, China
| | - Weixi Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
| | - Dejun Liang
- Liaoning Provincial Poplar Institute, Gaizhou, Liaoning, China
| | - XiaoJiang Wang
- Inner Mongolia Academy of Forestry Sciences, Hohhot, Inner Mongolia, China
| | - Aiping Li
- Inner Mongolia Academy of Forestry Sciences, Hohhot, Inner Mongolia, China
| | - Xiaohua Su
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
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26
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Yao Y, Zhang X, Huang Z, Li H, Huang J, Corti G, Wu Z, Qin X, Zhang Y, Ye X, Fan H, Jiang L. A field study on the composition, structure, and function of endophytic bacterial community of Robinia pseudoacacia at a composite heavy metals tailing. Sci Total Environ 2022; 850:157874. [PMID: 35940266 DOI: 10.1016/j.scitotenv.2022.157874] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 08/02/2022] [Accepted: 08/02/2022] [Indexed: 05/27/2023]
Abstract
Robinia pseudoacacia (R. pseudoacacia) is a well reported plant species for heavy metal phytoremediation, and it was capable to improve Cd uptake efficiency after inoculated with plant growth promoting endophytes. However, the knowledge on R. pseudoacacia associated endophytes in field condition and the relationship between these microbial communities and heavy metal uptake capacities are still scarce. In this study, the characteristics of heavy metal bioaccumulation and translocation in R. pseudoacacia, and the structure and function of its endophytic bacterial communities were revealed. The results showed that heavy metal pollution made microbes more sensitive to the environment as the diversity (Shannon) of endophyte community decreased but the abundance (Chao) increased. Redundancy analysis (RDA) also showed that heavy metals were the key factor affecting the composition of endophyte. In the co-occurrence network, 27 keystone taxa mainly from Actinobacteria, Proteobacteria and Firmicutes occupied the dominant niches, among which 16 OTUs mainly from lactobacillus, bacteroides, staphylococcus, methylorubrum and bifidobacterium were positively related to bioaccumulation and translocation of Cd, Cu, Pb and Zn. Besides, heavy metal stress enhanced the functional adaptability of endophytic bacteria community. Related predicted genes were enriched in immune response, physiological metabolism pathway and stress-resistant enzyme synthesis. This study showed that heavy metal stress enhanced the structural and functional adaptability of endophyte community and keystone taxa played significant role in improving the efficiency of phytoremediation.
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Affiliation(s)
- Yuxuan Yao
- College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha, Hunan 410004, PR China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Xuan Zhang
- College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha, Hunan 410004, PR China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Zhongliang Huang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Hui Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Jing Huang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Giuseppe Corti
- Department of Agrarian, Food and Environmental Sciences, Università Politecnica dell Marche, Ancona, Italy
| | - Zijian Wu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Xiaoli Qin
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Yanru Zhang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Xinyu Ye
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Huixin Fan
- College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha, Hunan 410004, PR China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha, Hunan 410004, PR China
| | - Lijuan Jiang
- College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha, Hunan 410004, PR China.
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Chen X, Chen H, Zhao J, Xin Y, Li Y. Bacterial community structure and diversity in the rhizospheric soil of Robinia pseudoacacia and Juniperus sabina planted in iron tailings matrix. Environ Sci Pollut Res Int 2022; 29:83404-83416. [PMID: 35763144 DOI: 10.1007/s11356-022-21669-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Iron tailings matrix is deficient in nutrients, and phytoremediation is one of the effective methods to improve tailings nutrients. The response of phytoremediation to tailings microorganisms remains to be studied. The present study analyzed rhizospheric soil of two kinds of plants bacterial diversity and community structure and their relationship with soil environmental factors. The results indicate that the rhizospheric soil bacteria species of Robinia pseudoacacia and Juniperus sabina were not significantly different from that of bare tailings, but rhizospheric soil bacterial community compositions and abundance were significantly different from that of bare tailings. Canonical correlation analysis (CCA) showed that soil alkali-hydrolyzable nitrogen (AN), soil total nitrogen (TN), and soil organic matter (SOM) were the main environmental factors affecting bacterial community diversity. Spearman's correlation analysis showed that AN, TN, and SOM were significantly positively correlated with the relative abundance of Gemmatimonadetes and Nitrospirae, and were significantly negatively correlated with that of Firmicutes, Fusobacteria, and Bacteroidetes. FAPROTAX function prediction showed that the functional microbial communities of rhizospheric soil of the two plants were significantly different from those of bare tailings. Overall, the findings support an increase of microbial diversity, SOM, and nitrogen in rhizospheric soil of revegetated tailings compared to bare tailings. These results provide theoretical support for the development and application of phytoremediation in abandoned mines.
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Affiliation(s)
- Xiaolin Chen
- College of Forestry, Hebei Agricultural University, No. 2596, Lekai South Street, Lianchi District, Baoding City, 071000, Hebei Province, China
| | - Haipeng Chen
- College of Forestry, Hebei Agricultural University, No. 2596, Lekai South Street, Lianchi District, Baoding City, 071000, Hebei Province, China
| | - Jiaqi Zhao
- College of Forestry, Hebei Agricultural University, No. 2596, Lekai South Street, Lianchi District, Baoding City, 071000, Hebei Province, China
| | - Yue Xin
- College of Forestry, Hebei Agricultural University, No. 2596, Lekai South Street, Lianchi District, Baoding City, 071000, Hebei Province, China
| | - Yuling Li
- College of Forestry, Hebei Agricultural University, No. 2596, Lekai South Street, Lianchi District, Baoding City, 071000, Hebei Province, China.
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28
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Zhang HL, Wu RQ, Li JJ, Wang RQ, Long X, Yang CX, Shangguan ZP. [Effects of root exudates C:N on soil physical and chemical characteristics and soil respiration in Robinia pseudoacacia plantation]. Ying Yong Sheng Tai Xue Bao 2022; 33:949-956. [PMID: 35543046 DOI: 10.13287/j.1001-9332.202204.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We explored the effects of C:N ratio in root exudates of Robinia pseudoacacia plantations on soil nutrient cycling and microbial activity on the Loess Plateau. We collected in-situ soil from the R. pseudoacacia plantations with essentially identical habitat conditions and growing time of 15, 25, 35, and 45 years. By adding root exudates with different C:N ratios (N only, C:N=10, C:N=50, C:N=100, C only) to the soil and using deionized water as a control, we analyzed the effects of C:N ratio of root exudates on the physicochemical properties of elements such as carbon, nitrogen and phosphorus, soil pH, and soil respiration. The results showed that: 1) Organic carbon content was positively correlated with the C:N ratio of root exudates. Soil organic carbon (SOC) decomposition was faster when root exudates C:N=10. Higher C:N ratio of root exudates (C:N=100) could inhibit SOC decomposition, but only C addition had no significant effect on SOC. 2) Different root exudate C:N produced no significant influence on the total nitrogen. The addition of carbon promoted microbial uptake of ammonium nitrogen, while the addition of nitrogen promoted the nitrification of ammonium nitrogen. As the C:N ratio of root exudates increased, soil ammonium nitrogen content decreased. 3) The addition of nitrogen would reduce soil pH and increase soil total phosphorus content. 4) Soil respiration of R. pseudoacacia plantations was positively correlated with the C:N ratio of root exudates. With the increases of C:N ratio, the promoting effect of root exudates on soil respiration at 25 and 35 years R. pseudoacacia plantations was stronger. In conclusion, higher C:N ratio of root exudates will significantly promote the effect on soil respiration of R. pseudoacacia plantations. Our results improved the understan-ding of the root-soil-microbial interactions in forests.
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Affiliation(s)
- Hai-Long Zhang
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Run-Qin Wu
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jia-Jia Li
- State Key Laboratory of Soil Erosion and Dryland Agriculture on the Loess Plateau, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Rui-Qiang Wang
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiahou Long
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Chun-Xia Yang
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zhou-Ping Shangguan
- State Key Laboratory of Soil Erosion and Dryland Agriculture on the Loess Plateau, Northwest A&F University, Yangling 712100, Shaanxi, China
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29
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Bennis M, Perez-Tapia V, Alami S, Bouhnik O, Lamin H, Abdelmoumen H, Bedmar EJ, Missbah El Idrissi M. Characterization of plant growth-promoting bacteria isolated from the rhizosphere of Robinia pseudoacacia growing in metal-contaminated mine tailings in eastern Morocco. J Environ Manage 2022; 304:114321. [PMID: 35021593 DOI: 10.1016/j.jenvman.2021.114321] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Mining activity in the Touissit district of Eastern Morocco has led to an unprecedented accumulation of heavy metals, mainly lead and zinc, in the tailing ponds of the open-air mines. This poses a real danger to both the environment and local population. OBJECTIVES The goal of this work was to characterize the Plant Growth Promoting Rhizobacteria (PGPR) isolated from the rhizosphere soil of R. pseudoacacia plants grown wild in the abandoned Pb- and Zn-contaminated tailing ponds in the mining district of Touissit, in Eastern Morocco. MAIN RESULTS One hundred bacterial strains were isolated from the rhizosphere of black locust (Robinia pseudoacacia L.) plants growing naturally in the Touissit mine tailings. Quantitative determination of indole-acetic and siderophores production, inorganic phosphate solubilization, hydrolysis of 1-aminocyclopropane-1-carboxylic acid (ACC deaminase activity), and ability to act as a biocontrol agent allowed selection of the 3 strains, 7MBT, 17MBT and 84MBT with improved PGP properties. The three strains grew well in the presence of high concentration of Pb-acetate and ZnCl2; and the addition of Pb or Zn to the culture medium differently affected the PGP properties analyzed. NOVELTY STATEMENT Inoculation of black locust grown with the 3 selected strains, in the presence 1000 μg ml-1 of Pb-acetate, produced varying effects on the plant dry weight. The strain 84MBT alone or in combination with strains 7MBT and 17MBT increased significantly the dry weight of the plants by 91, 62, and 85% respectively. The 16S rRNA gene sequence analysis of each strain showed that the strains 7MBT 17MBT and 84MBT had 99.34, 100, and had 99.72% similarity with Priestia endophytica (formerly B. endophyticus), B. pumilus NBRC 12092T, and B. halotolerans NBRC 15718T, respectively.
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Affiliation(s)
- Meryeme Bennis
- Centre de Biotechnologies Végétale et Microbienne, Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 4, Avenue Ibn Battouta, Rabat, Morocco
| | - Vicente Perez-Tapia
- Departamento de Microbiología del Suelo y Sistemas Simbióticos Estación Experimental del Zaidín, CSIC Apartado Postal 419, 18008, Granada, Spain
| | - Soufiane Alami
- Centre de Biotechnologies Végétale et Microbienne, Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 4, Avenue Ibn Battouta, Rabat, Morocco
| | - Omar Bouhnik
- Centre de Biotechnologies Végétale et Microbienne, Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 4, Avenue Ibn Battouta, Rabat, Morocco
| | - Hanane Lamin
- Centre de Biotechnologies Végétale et Microbienne, Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 4, Avenue Ibn Battouta, Rabat, Morocco
| | - Hanaa Abdelmoumen
- Centre de Biotechnologies Végétale et Microbienne, Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 4, Avenue Ibn Battouta, Rabat, Morocco
| | - Eulogio J Bedmar
- Departamento de Microbiología del Suelo y Sistemas Simbióticos Estación Experimental del Zaidín, CSIC Apartado Postal 419, 18008, Granada, Spain
| | - Mustapha Missbah El Idrissi
- Centre de Biotechnologies Végétale et Microbienne, Biodiversité et Environnement, Faculté des Sciences, Université Mohammed V de Rabat, 4, Avenue Ibn Battouta, Rabat, Morocco.
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30
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Li WJ, Zhang ZJ, Zhao YP, Xu MP, Ren CJ, Yang GH, Feng YZ, Ren GX, Wang XJ, Han XH. [Changes in Soil Microbial Carbon-Degrading Enzymes and Their Relationships with Carbon Pool Components During the Restoration Process of Robinia pseudoacacia]. Huan Jing Ke Xue 2022; 43:1050-1058. [PMID: 35075879 DOI: 10.13227/j.hjkx.202107008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
To reveal the change in the characteristics of soil microbial C-degrading enzyme activities and the response to the components of C during the restoration process of Robinia pseudoacacia forests in the Loess Plateau, the components of the soil C pool, C-degrading enzyme activities, and microbial metabolic entropy of R. pseudoacacia in different restoration stages were studied, and the response relationship between C-degrading enzymes and soil C components was explored. The results showed that the microbial respiration (MR) first increased and then decreased with the restored years. We found that the microbial metabolic entropy (qCO2) decreased significantly with the restored years, but the microbial entropy (qMB) increased. Soil C-degrading enzymes increased significantly in the early-stage restoration of R. pseudoacacia; however, oxidizing enzymes (PO and PER) and cellobiohydrolase (CBH) decreased in the late stage of restoration. The soil organic C and recalcitrant organic C increased significantly with the restored years; however, there was no significant difference for the labile organic C. Correlation analysis and the partial least squares-path model (PLS-PM) showed that soil C-degrading enzymes and C components were significantly correlated with microbial respiration and entropy (qCO2 and qMB), respectively. The hydrolytic enzyme (BG+CBH) was significantly positively correlated with SOC, microbial biomass C, qMB, and recalcitrant and labile organic C. The oxidizing enzyme (PO+PER) was significantly positively correlated with the soil clay and qCO2. In addition, the recalcitrant organic C was the key driver of soil microbial metabolism affected by vegetation restoration. Overall, the ecosystem of R. pseudoacacia plantations would gradually stabilize with the increase in restored years and significantly increase the sequestration effect of soil C. These results will be helpful to understand the transformation rule and regulation mechanism of the soil C pool in vulnerable habitats and provide scientific basis for the restoration and management of vegetation in the Loess Plateau.
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Affiliation(s)
- Wen-Jie Li
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Zhen-Jiao Zhang
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Ya-Ping Zhao
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Miao-Ping Xu
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Cheng-Jie Ren
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Gai-He Yang
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Yong-Zhong Feng
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Guang-Xin Ren
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Xiao-Jiao Wang
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
| | - Xin-Hui Han
- College of Agronomy, Northwest A&F University, Yangling 712100, China
- Shaanxi Engineering Research Center of Circular Agriculture, Yangling 712100, China
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Wang L, Jia X, Zhao Y, Zhang C, Zhao J. Effect of arbuscular mycorrhizal fungi in roots on antioxidant enzyme activity in leaves of Robinia pseudoacacia L. seedlings under elevated CO 2 and Cd exposure. Environ Pollut 2022; 294:118652. [PMID: 34890743 DOI: 10.1016/j.envpol.2021.118652] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/25/2021] [Accepted: 12/05/2021] [Indexed: 06/13/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) are easily influenced by increasing atmospheric CO2 concentration and heavy metals including cadmium (Cd), which can regulate antioxidant enzyme in host plants. Although the effect of AMF under individual conditions such as elevated CO2 (ECO2) and Cd on antioxidant enzyme in host plants has been reported widely, the effect of AMF under ECO2 + Cd receives little attention. In this study, a pot experiment was conducted to study the effect of AMF community in roots on superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities in leaves of 135-d Robinia pseudoacacia L. seedlings under ECO2 + Cd. The activities of SOD and CAT increased and POD activity and the richness and diversity of AMF community decreased under ECO2 + Cd relative to Cd alone. The richness and diversity of AMF were negatively related to Cd content in roots and leaves. The richness and OTUs of AMF community positively and AMF gene abundance negatively affected POD activity under the combined treatments. Superoxide dismutase and POD activities were negatively and positively related to Archaeospora and Scutellospora, respectively, under ECO2 + Cd. Cadmium in roots and leaves was negatively and significantly related to Glomus, Scutellospora, and Claroideoglomus abundance under ECO2 + Cd. Overall, AMF diversity and Archaeospora and Scutellospora in roots significantly influenced SOD, POD, and CAT activities. The response of AM symbiosis to ECO2 might regulate antioxidant capacity in host plants upon Cd exposure. Glomus, Scutellospora, and Claroideoglomus might be applied to phytoremediation of Cd-contaminated soils.
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Affiliation(s)
- Lu Wang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an, 710054, PR China
| | - Xia Jia
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an, 710054, PR China.
| | - Yonghua Zhao
- School of Land Engineering, Chang'an University, Xi'an, 710054, PR China
| | - ChunYan Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an, 710054, PR China
| | - Jiamin Zhao
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an, 710054, PR China
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Bouteiller XP, Moret F, Ségura R, Klisz M, Martinik A, Monty A, Pino J, van Loo M, Wojda T, Porté AJ, Mariette S. The seeds of invasion: enhanced germination in invasive European populations of black locust ( Robinia pseudoacacia L.) compared to native American populations. Plant Biol (Stuttg) 2021; 23:1006-1017. [PMID: 34546636 DOI: 10.1111/plb.13332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
Local adaptation and the evolution of phenotypic plasticity may facilitate biological invasions. Both processes can enhance germination and seedling recruitment, which are crucial life-history traits for plants. The rate, timing and speed of germination have recently been documented as playing a major role during the invasion process. Black locust (Robinia pseudoacacia L.) is a North American tree, which has spread widely throughout Europe. A recent study demonstrated that a few populations are the source of European black locust. Thus, invasive populations can be compared to native ones in order to identify genetic-based phenotypic differentiation and the role of phenotypic plasticity can thereby be assessed. A quantitative genetics experiment was performed to evaluate 13 juvenile traits of both native and invasive black locust populations (3000 seeds, 20 populations) subjected to three different thermal treatments (18 °C, 22 °C and 31 °C). The results revealed European populations to have a higher germination rate than the native American populations (88% versus 60%), and even when genetic distance between populations was considered. Moreover, this trait showed lower plasticity to temperature in the invasive range than in the native one. Conversely, other studied traits showed high plasticity to temperature, but they responded in a similar way to temperature increase: the warmer the temperature, the higher the growth rate or germination traits values. The demonstrated genetic differentiation between native and invasive populations testifies to a shift between ranges for the maximum germination percentage. This pattern could be due to human-mediated introduction of black locust.
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Affiliation(s)
| | - F Moret
- BIOGECO, INRAE, Univ. Bordeaux, Cestas, France
| | - R Ségura
- BIOGECO, INRAE, Univ. Bordeaux, Cestas, France
| | - M Klisz
- Department of Silviculture and Genetics, Forest Research Institute, Raszyn, Poland
| | - A Martinik
- Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - A Monty
- Gembloux Agro-Bio Tech, Biodiversity and Landscape Unit, University of Liège, Gembloux, Belgium
| | - J Pino
- Centre for Ecological Research and Forestry Applications (CREAF), Universitat Autònoma de Barcelona, Bellaterra (Barcelona), Spain
| | - M van Loo
- Department of Forest Growth, Silviculture and Genetics, Research Centre for Forests (BFW), Vienna, Austria
| | - T Wojda
- Department of Silviculture and Genetics, Forest Research Institute, Raszyn, Poland
| | - A J Porté
- BIOGECO, INRAE, Univ. Bordeaux, Cestas, France
| | - S Mariette
- BIOGECO, INRAE, Univ. Bordeaux, Cestas, France
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Zhang X, Yu J, Huang Z, Li H, Liu X, Huang J, Zhuo R, Wu Z, Qin X, Gao Y, Wang M, Zhu Y. Enhanced Cd phytostabilization and rhizosphere bacterial diversity of Robinia pseudoacacia L. by endophyte Enterobacter sp. YG-14 combined with sludge biochar. Sci Total Environ 2021; 787:147660. [PMID: 34004543 DOI: 10.1016/j.scitotenv.2021.147660] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/09/2021] [Accepted: 05/05/2021] [Indexed: 05/19/2023]
Abstract
Robinia pseudoacacia L., a pioneer woody legume grown in mining areas, has been recognized as a remarkable accumulator of various heavy metals. Compared with other hazardous heavy metals (HMs), it is of low capacity in accumulating Cd, which, as a result, may hinder the phytoremediation efficiency. To enhance R. pseudoacacia's uptake efficiency of Cd, the individual effects of various rhizobia and arbuscular mycorrhizal fungi have been reported, however, the combined influence of endophytes and biochar receives little attention. In the current study, a Cd-adsorbing endophyte Enterobacter sp. YG-14 was inoculated to R. pseudoacacia, and its extraordinary effect on increasing R. pseudoacacia's Cd uptake was found, which was ascribed to the reinforced root Cd chelation by the strain through secreting siderophores/LMWOAs. Further, P-enriched sludge biochar was applied along with YG-14 to form a combined biochar-endophyte-accumulator system, in which biomineralization were reinforced (i.e. CdCO3 and Cd2P2O7 were generated), as the total and acid-soluble Cd in rhizosphere were reduced by 61.75% and 69.01% respectively, and soil's bacterial diversity was further improved with diversified N2-fixing microbial biomarkers. Multiple synergistic effects (E > 0) were also found, with the optimum performance on plant growth parameters (increased by 39.61%-561.91%) in comparison to the control group. Moreover, the system exhibited a preferable Cd phytostabilization capacity with the highest increase (81.42%) in Cd accumulation and a significant reduction (72.73%) in Cd root-to-shoot translocation.
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Affiliation(s)
- Xuan Zhang
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410008, Hunan, PR China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Jinlan Yu
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410008, Hunan, PR China; State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Zhongliang Huang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Hui Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Xuanming Liu
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410008, Hunan, PR China
| | - Jing Huang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Rui Zhuo
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410008, Hunan, PR China
| | - Zijian Wu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Xiaoli Qin
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Yan Gao
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410008, Hunan, PR China
| | - Mengyuan Wang
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, PR China
| | - Yonghua Zhu
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, College of Biology, Hunan University, Changsha 410008, Hunan, PR China.
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Zai X, Luo W, Bai W, Li Y, Xiao X, Gao X, Wang E, Wei G, Chen W. Effect of Root Diameter on the Selection and Network Interactions of Root-Associated Bacterial Microbiomes in Robinia pseudoacacia L. Microb Ecol 2021; 82:391-402. [PMID: 33449130 DOI: 10.1007/s00248-020-01678-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 12/29/2020] [Indexed: 05/06/2023]
Abstract
The high plasticity of root morphology, physiology, and function influences root-associated microbiomes. However, the variation in root-associated microbiome diversity and structures in response to root diameter at different root depths remains poorly understood. Here, we selected black locust (Robinia pseudoacacia L.) as a model plant to investigate the selection and network interactions of rhizospheric and root endophytic bacterial microbiomes associated with roots of different diameters (1, 1-2, and > 2 mm) among root depths of 0-100 cm via the Illumina sequencing of the 16S rRNA gene. The results showed that the alpha diversity of the root-associated bacterial communities decreased with increasing root diameters among different root depths; fewer orders with higher relative abundance, especially in the endosphere, were enriched in association with coarse roots (> 2 mm) than fine roots among root depths. Furthermore, the variation in the enriched bacterial orders associated with different root diameters was explained by bulk soil properties. Higher co-occurrence network complexity and stability emerged in the rhizosphere microbiomes of fine roots than those of coarse roots, in contrast to the situation in the endosphere microbiomes. In particular, the endosphere of roots with a diameter of 1-2 mm exhibited the lowest network complexity and stability and a high proportion of keystone taxa (e.g., Cytophagia, Flavobacteriia, Sphingobacteriia, β-Proteobacteria, and γ-Proteobacteria), suggesting a keystone taxon-reliant strategy in this transitional stage. In summary, this study indicated that root diameter at different root depths differentially affects rhizospheric and endophytic bacterial communities, which implies a close relationship between the bacterial microbiome, root function, and soil properties.
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Affiliation(s)
- Xiaoyu Zai
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
| | - Wen Luo
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
| | - Wenqing Bai
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
| | - Yuhua Li
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
| | - Xiao Xiao
- Department of Microbiology, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, 442000, Hubei, People's Republic of China
| | - Xuee Gao
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
| | - Entao Wang
- Depatamento de Microbiología, Escuela Nacional de Ciencias Biologicas, Instituto Politécnico Nacional, 11340, Mexico, D.F., Mexico
| | - Gehong Wei
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China
| | - Weimin Chen
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, 3 Taicheng Road, Yangling, Xianyang, 712100, Shaanxi, People's Republic of China.
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Bobiş O, Bonta V, Cornea-Cipcigan M, Nayik GA, Dezmirean DS. Bioactive Molecules for Discriminating Robinia and Helianthus Honey: High-Performance Liquid Chromatography-Electron Spray Ionization-Mass Spectrometry Polyphenolic Profile and Physicochemical Determinations. Molecules 2021; 26:molecules26154433. [PMID: 34361585 PMCID: PMC8347174 DOI: 10.3390/molecules26154433] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/18/2021] [Accepted: 07/20/2021] [Indexed: 01/22/2023] Open
Abstract
Bioactive molecules from the class of polyphenols are secondary metabolites from plants. They are present in honey from nectar and pollen of flowers from where honeybees collect the “raw material” to produce honey. Robinia pseudoacacia and Helianthus annuus are important sources of nectar for production of two monofloral honeys with specific characteristics and important biological activity. A high-performance liquid chromatography–electro spray ionization–mass spectrometry (HPLC–ESI–MS) separation method was used to determine polyphenolic profile from the two types of Romanian unifloral honeys. Robinia and Helianthus honey showed a common flavonoid profile, where pinobanksin (1.61 and 1.94 mg/kg), pinocembrin (0.97 and 1.78 mg/kg) and chrysin (0.96 and 1.08 mg/kg) were identified in both honey types; a characteristic flavonoid profile in which acacetin (1.20 mg/kg), specific only for Robinia honey, was shown; and quercetin (1.85 mg/kg), luteolin (21.03 mg/kg), kaempferol (0.96 mg/kg) and galangin (1.89 mg/kg), specific for Helianthus honey, were shown. In addition, different phenolic acids were found in Robinia and Helianthus honey, while abscisic acid was found only in Robinia honey. Abscisic acid was correlated with geographical location; the samples collected from the south part of Romania had higher amounts, due to climatic conditions. Acacetin was proposed as a biochemical marker for Romanian Robinia honey and quercetin for Helianthus honey.
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Affiliation(s)
- Otilia Bobiş
- Department of Beekeeping and Sericulture, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 400372 Cluj-Napoca, Romania;
- Correspondence: (O.B.); (D.S.D.)
| | - Victoriţa Bonta
- Department of Beekeeping and Sericulture, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 400372 Cluj-Napoca, Romania;
| | - Mihaiela Cornea-Cipcigan
- Department of Horticulture and Landscaping, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 400372 Cluj-Napoca, Romania;
| | - Gulzar Ahmad Nayik
- Department of Food Science & Technology, Govt. Degree College Shopian, Srinagar 192303, India;
| | - Daniel Severus Dezmirean
- Department of Beekeeping and Sericulture, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 400372 Cluj-Napoca, Romania;
- Correspondence: (O.B.); (D.S.D.)
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Hu S, Jiao J, Kou M, Wang N, García-Fayos P, Liu S. Quantifying the effects of Robinia pseudoacacia afforestation on plant community structure from a functional perspective: New prospects for management practices on the hilly and gullied Loess Plateau, China. Sci Total Environ 2021; 773:144878. [PMID: 33940705 DOI: 10.1016/j.scitotenv.2020.144878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 12/28/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
Robinia pseudoacacia is regarded as a valuable but problematic plant due to its positive and negative environmental effects. A comprehensive and mechanistic understanding of the effects of R. pseudoacacia afforestation on ecosystems and striking a balance between ecosystem safety and functioning and R. pseudoacacia naturalization are crucially important. To achieve these goals, studying the community functional structure of R. pseudoacacia plantations is an essential prerequisite that remains understudied. Through quantifying and comparing the functional structure of R. pseudoacacia plantations and naturally restored communities relating to soil erosion control and plant ecology strategies along a 10-40-year chronosequence on the hilly and gullied Loess Plateau, China, we assessed the effects of R. pseudoacacia afforestation on plant community structure from a functional perspective. We found significant differences among restoration strategies in all the functional composition indices but only functional divergence (FDiv) indices, suggesting that the afforestation practice had a great impact on functional composition but not on functional diversity. Specifically, the plantations had relatively high community-weighted means (CWMs) of specific leaf area (SLA), plant height (PH), seed production, seed mass, root mean diameter, clonality and resprouting capacity and high FDivs of the leaf-height-seed scheme and persistence traits, partially suggesting that the exotic tree could naturalize and coexist with native plants in the study area. Moreover, the relatively high CWMs of woodiness, PH and SLA and high FDiv of erosion-control-related traits found in the plantations indicate that the plantations might have superiority in soil erosion control. R. pseudoacacia also had a homogenization effect on understory functional composition and divergence. Furthermore, we proposed a trait-based effect-and-response framework to find the balance, thus achieving sustainable coexistence of the exotic species with ecosystems. This study may provide new prospects for management practices of R. pseudoacacia plantations and a robust scaffold to maintain safe, resilient and functioning ecosystems.
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Affiliation(s)
- Shu Hu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China
| | - Juying Jiao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China.
| | - Meng Kou
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling 712100, China; College of Resources & Environment and History & Culture, Xianyang Normal University, Xianyang 712000, China
| | - Ning Wang
- School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China
| | - Patricio García-Fayos
- Centro de Investigaciones sobre Desertificación-CIDE (Consejo Superior de Investigaciones Científicas-CSIC, Universidad de Valencia-UV, Generalitat Valenciana-GV), Moncada 46113, Valencia, Spain
| | - Shiqiang Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi'an 710069, China
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Guo M, Chen Z, Wang W, Wang T, Wang W, Cui Z. Revegetation induced change in soil erodibility as influenced by slope situation on the Loess Plateau. Sci Total Environ 2021; 772:145540. [PMID: 33770870 DOI: 10.1016/j.scitotenv.2021.145540] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
Soil erodibility is an indispensable parameter for predicting soil erosion and evaluating the benefits of soil and water conservation. Slope situation can alter revegetation and its effects on soil properties and root traits, and thus may affect soil erodibility. However, whether slope situation will change the effect of revegetation on soil erodibility through improving soil properties and root traits has rarely been evaluated. Therefore, this study was conducted to detect the response of soil erodibility to slope situations (loess-tableland, hill-slope and gully-slope) in a typical watershed of the Loess Plateau. Five soil erodibility parameters (saturated soil hydraulic conductivity, SHC; mean weight diameter of aggregates, MWD; clay ratio, CR; soil disintegration rate, SDR; soil erodibility factor, K) and a comprehensive soil erodibility index (CSEI) are selected to clarify the study targets. The results revealed that soil properties, root traits, soil erodibility parameters and CSEI were affected by slope situation significantly. Soil and root can explain 79.7%, 79.1% and 69.8% of total variance in soil erodibility of loess-tableland, hill-slope and gully-slope, respectively. Slope situation influenced soil erodibility by changing the effects of revegetation on soil properties and root traits. Evidently, the slope situation greatly changed the relations between CSEI and soil and root parameters, whereafter a model considering slope situation (slope steepness), sand, organic matter content and root surface area density was reliable to estimate soil erodibility (CSEI). Our study suggested that the Armeniaca sibirica, the combination of Bothriochloa ischcemum and Robinia pseudoacacia and the combination of Armeniaca sibirica and Lespedeza bicolor can be used as the optimal selection for mitigating soil erodibility of loess-tableland, hill-slope and gully-slope, respectively. This study is of great significance in optimizing the spatial layout of soil and water conservation measures for different slope situations of the Loess Plateau.
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Affiliation(s)
- Mingming Guo
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, PR China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China
| | - Zhuoxin Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Wenlong Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
| | - Tianchao Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Wenxin Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Zhiqiang Cui
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China
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Jia X, Gao Y, Li X, Zhao Y, Wang L, Zhang C. Effects of cadmium on soil nitrification in the rhizosphere of Robinia pseudoacacia L. seedlings under elevated atmospheric CO 2 scenarios. Sci Total Environ 2021; 772:145023. [PMID: 33581544 DOI: 10.1016/j.scitotenv.2021.145023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/02/2021] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
The individual impacts of elevated CO2 and heavy metals on soil nitrification have been widely reported. However, studies on the combined effects of elevated CO2 and heavy metals on soil nitrification are still limited. Here, a 135-day growth chamber experiment was conducted to investigate the impacts of elevated CO2 and cadmium (Cd) levels on soil nitrification in the rhizosphere of Robinia pseudoacacia L. seedlings. Elevated CO2 combined with Cd pollution generally stimulated ammonia monooxygenase (AMO), hydroxylamine oxidase (HAO), and nitrite oxidoreductase (NXR) activities. Compared to the control, the abundance of ammonia-oxidizing bacteria (AOB) at day 135 and ammonia-oxidizing archaea (AOA) increased significantly (p < 0.05) and the abundance of AOB at days 45 and 90 and that of the nitrite-oxidizing bacteria (NOB) decreased under elevated CO2 + Cd. Elevated CO2 mostly led to a significant (p < 0.05) decrease in soil nitrification intensity in the rhizosphere of R. pseudoacacia exposed to Cd. The effects of Cd, CO2, and their interaction on HAO and NXR activities were significant (p < 0.01). Soil pH, the C/N ratio, water-soluble organic carbon, water-soluble organic nitrogen (WSON), and total carbon were the dominant factors (p < 0.05) affecting nitrifying enzyme activities and nitrification intensity in rhizosphere soils. Elevated CO2 clearly affected AOA, AOB, and NOB community structures and dominant genera by shaping C/N ratio, pH, and Cd and WSON contents in rhizosphere soils under Cd exposure. Overall, the responses of pH, C/N ratio, WSON, and Cd to elevated CO2 led to changes in rhizosphere soil nitrification under the combination of elevated CO2 and Cd pollution.
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Affiliation(s)
- Xia Jia
- Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Land and Resources, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China.
| | - Yunfeng Gao
- Shaanxi Key Laboratory of Land Consolidation, School of Land Engineering, Chang'an University, Xi'an 710054, PR China
| | - Xiaodi Li
- Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Land and Resources, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Yonghua Zhao
- Shaanxi Key Laboratory of Land Consolidation, School of Land Engineering, Chang'an University, Xi'an 710054, PR China
| | - Lu Wang
- Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Land and Resources, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Chunyan Zhang
- Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Land and Resources, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
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Wang J, Zhao W, Wang G, Yang S, Pereira P. Effects of long-term afforestation and natural grassland recovery on soil properties and quality in Loess Plateau (China). Sci Total Environ 2021; 770:144833. [PMID: 33508670 DOI: 10.1016/j.scitotenv.2020.144833] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/17/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Long-term afforestation has important implications on soil properties and quality in semi-arid areas. A large-scale afforestation project has been carried out in the Loess Plateau in the last 20 years. This work aims to study the afforestation (Robinia pseudoacacia, Caragana korshinskii and natural grassland recover 10, 20, 30, and 40 years after) impacts on soil properties and quality. The results showed that coverage and root biomass (RB) was the highest 30 years after the restoration in Robinia pseudoacacia and Caragana korshinskii treatments, while the highest 40 years post-restoration in natural grasslands. Sand content and BD showed the highest values 10 years post afforestation in all study areas. Clay, Silt, mean weight diameter (MWD), and geometric mean diameter (GMD) in Robinia pseudoacacia, Caragana korshinskii had the highest values 30 years after the afforestation, while in natural grasslands, this was observed 40 years after. In Robinia pseudoacacia, Caragana korshinskii treatments, soil moisture content (SMC) reached the highest levels 30 years post afforestation at 20-40 and 40-60 cm. Regarding natural grasslands, SMC had the highest values 40 years post-afforestation. Sand content and BD increased with soil depth, while the opposite was identified in RB, clay, silt, MWD, GMD and SMC. In Robinia pseudoacacia and Caragana korshinskii treatments, soil organic matter, total nitrogen, available nitrogen, total phosphorous, and available phosphorus had the highest levels 40 years post-restoration at 0-20 cm, while at 20-40 and 40-60 cm, the highest concentrations were identified 30 years after. In all the treatments, the soil quality index (SQI) was the highest 40 years post-restoration. The values of SQI were always higher in natural grasslands than in Robinia pseudoacacia and Caragana korshinskii treatments. Overall, natural recovery (natural grasslands) is more efficient than afforestation (Robinia pseudoacacia and Caragana korshinskii treatments) in soil quality.
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Affiliation(s)
- Jing Wang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Institute of Land Surface System and Sustainable Development, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Wenwu Zhao
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Institute of Land Surface System and Sustainable Development, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China.
| | - Guan Wang
- School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Siqi Yang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Institute of Land Surface System and Sustainable Development, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Paulo Pereira
- Environment Management Laboratory, Mykolas Romeris University, LT-08303 Vilnius, Lithuania
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Huo H, Wang X, Liu Y, Chen J, Wei G. A Nod factor- and type III secretion system-dependent manner for Robinia pseudoacacia to establish symbiosis with Mesorhizobium amorphae CCNWGS0123. Tree Physiol 2021; 41:817-835. [PMID: 33219377 DOI: 10.1093/treephys/tpaa160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 11/15/2020] [Indexed: 06/11/2023]
Abstract
Under nitrogen-limiting conditions, symbiotic nodulation promotes the growth of legume plants via the fixation of atmospheric nitrogen to ammonia by rhizobia in root nodules. The rhizobial Nod factor (NF) and type III secretion system (T3SS) are two key signaling pathways for establishing the legume-rhizobium symbiosis. However, whether NF signaling is involved in the nodulation of Robinia pseudoacacia and Mesorhizobium amorphae CCNWGS0123, and its symbiotic differences compared with T3SS signaling remain unclear. Therefore, to elucidate the function of NF signaling in nodulation, we mutated nodC in M. amorphae CCNWGS0123, which aborted NF synthesis. Compared with the plants inoculated with the wild type strain, the plants inoculated with the NF-deficient strain exhibited shorter shoots with etiolated leaves. These phenotypic characteristics were similar to those of the plants inoculated with the T3SS-deficient strain, which served as a Nod- (non-effective nodulation) control. The plants inoculated with both the NF- and T3SS-deficient strains formed massive root hair swellings, but no normal infection threads were detected. Sections of the nodules showed that inoculation with the NF- and T3SS-deficient strains induced small, white bumps without any rhizobia inside. Analyzing the accumulation of 6 plant hormones and the expression of 10 plant genes indicated that the NF- and T3SS-deficient strains activated plant defense reactions while suppressing plant symbiotic signaling during the perception and nodulation processes. The requirement for NF signaling appeared to be conserved in two other leguminous trees that can establish symbiosis with M. amorphae CCNWGS0123. In contrast, the function of the T3SS might differ among species, even within the same subfamily (Faboideae). Overall, this work demonstrated that nodulation of R. pseudoacacia and M. amorphae CCNWGS0123 was both NF and T3SS dependent.
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Affiliation(s)
- Haibo Huo
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi, People's Republic of China
| | - Xinye Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi, People's Republic of China
| | - Yao Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi, People's Republic of China
| | - Juan Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water conservation, Northwest A&F University, 26 Xinong Road, Yangling 712100, Shaanxi, People's Republic of China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology for Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi, People's Republic of China
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Wang L, Jia X, Zhao Y, Zhang C, Gao Y, Li X, Cao K, Zhang N. Effects of elevated CO2 on arbuscular mycorrhizal fungi associated with Robinia pseudoacacia L. grown in cadmium-contaminated soils. Sci Total Environ 2021; 768:144453. [PMID: 33434802 DOI: 10.1016/j.scitotenv.2020.144453] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/06/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
As symbionts capable of reciprocal rewards, arbuscular mycorrhizal fungi (AMF) can alleviate heavy metal toxicity to host plants and are easily influenced by elevated CO2 (ECO2). Although the individual effects of ECO2 and cadmium (Cd) on AMF have been widely reported, the response of AMF to ECO2 + Cd receives little attention. We evaluated the combined effects of ECO2 and Cd on AMF in the rhizosphere soil and roots of Robinia pseudoacacia L. seedlings. Under ECO2 + Cd relative to Cd, AMF gene copies and richness in rhizosphere soils increased (p < 0.05) and the diversity reduced (p < 0.05) at 4.5 mg Cd kg-1 dry soil; whereas root AMF abundance at 4.5 mg Cd kg-1 dry soil and the diversity and richness reduced (p < 0.05). Elevated CO2 caused obvious differences in the dominant genera abundance between rhizosphere soils and roots upon Cd exposure. Responses of C, water-soluble organic nitrogen (WSON), pH, and diethylene triamine penta-acetic acid (DTPA)-Cd in rhizosphere soils and root N to ECO2 shaped dominant genera in Cd-polluted rhizosphere soils. Levels of DTPA-Cd, WSON, C and pH in rhizosphere soils and C/N ratio, N, and Cd in roots to ECO2 affected (p < 0.05) dominant genera in roots under Cd exposure. AMF richness and diversity were lower in roots than in rhizosphere soils. Elevated CO2 altered AMF communities in rhizosphere soils and roots of R. pseudoacacia seedlings exposed to Cd. AMF associated with R. pseudoacacia may be useful/interesting to be used for improving the phytoremediation of Cd under ECO2.
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Affiliation(s)
- Lu Wang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Xia Jia
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China.
| | - Yonghua Zhao
- School of Land Engineering, Chang'an University, Xi'an 710054, PR China
| | - ChunYan Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Yunfen Gao
- School of Land Engineering, Chang'an University, Xi'an 710054, PR China
| | - Xiaodi Li
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Kemeng Cao
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Ningjing Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
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Liu D, Luo Y, Zheng X, Wang X, Chou M, Wei G. TRAPPC13 Is a Novel Target of Mesorhizobium amorphae Type III Secretion System Effector NopP. Mol Plant Microbe Interact 2021; 34:511-523. [PMID: 33630651 DOI: 10.1094/mpmi-12-20-0354-fi] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Similar to pathogenic bacteria, rhizobia can inject effector proteins into host cells directly to promote infection via the type III secretion system (T3SS). Nodulation outer protein P (NopP), a specific T3SS effector of rhizobia, plays different roles in the establishment of multiple rhizobia-legume symbiotic systems. Mesorhizobium amorphae CCNWGS0123 (GS0123), which infects Robinia pseudoacacia specifically, secretes several T3SS effectors, including NopP. Here, we demonstrate that NopP is secreted through T3SS-I of GS0123 during the early stages of infection, and its deficiency decreases nodule nitrogenase activity of R. pseudoacacia nodules. A trafficking protein particle complex subunit 13-like protein (TRAPPC13) has been identified as a NopP target protein in R. pseudoacacia roots by screening a yeast two-hybrid library. The physical interaction between NopP and TRAPPC13 is verified by bimolecular fluorescence complementation and coimmunoprecipitation assays. In addition, subcellular localization analysis reveals that both NopP and its target, TRAPPC13, are colocalized on the plasma membrane. Compared with GS0123-inoculated R. pseudoacacia roots, some genes associated with cell wall remodeling and plant innate immunity down-regulated in ΔnopP-inoculated roots at 36 h postinoculation. The results suggest that NopP in M. amorphae CCNWGS0123 acts in multiple processes in R. pseudoacacia during the early stages of infection, and TRAPPC13 could participate in the process as a NopP target.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Dongying Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yantao Luo
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaofeng Zheng
- Shaanxi Hydrogeology Engineering Geology and Environmental Geology Survey Center, Shaanxi Institute of Geological Survey, Xi'an, Shaanxi 710054, China
| | - Xinye Wang
- Moutai Institute, Renhuai, Guizhou 564500, China
| | - Minxia Chou
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
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Puchałka R, Dyderski MK, Vítková M, Sádlo J, Klisz M, Netsvetov M, Prokopuk Y, Matisons R, Mionskowski M, Wojda T, Koprowski M, Jagodziński AM. Black locust ( Robinia pseudoacacia L.) range contraction and expansion in Europe under changing climate. Glob Chang Biol 2021; 27:1587-1600. [PMID: 33336522 DOI: 10.1111/gcb.15486] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/12/2020] [Accepted: 12/08/2020] [Indexed: 05/06/2023]
Abstract
Robinia pseudoacacia is one of the most frequent non-native species in Europe. It is a fast-growing tree of high economic and cultural importance. On the other hand, it is an invasive species, causing changes in soil chemistry and light regime, and consequently altering the plant communities. Previously published models developed for the potential distribution of R. pseudoacacia concerned 2070, and were based mainly on data from Western and Central Europe; here we extended these findings and included additional data from Eastern Europe. To fill the gap in current knowledge of R. pseudoacacia distribution and improve the reliability of forecasts, we aimed to (i) determine the extent to which the outcome of range modeling will be affected by complementing R. pseudoacacia occurrence data with sites from Central, Southeastern, and Eastern Europe, (ii) identify and quantify the changes in the availability of climate niches for 2050 and 2070, and discuss their impacts on forest management and nature conservation. We showed that the majority of the range changes expected in 2070 will occur as early as 2050. In comparison to previous studies, we demonstrated a greater eastward shift of potential niches of this species and a greater decline of potential niches in Southern Europe. Consequently, future climatic conditions will likely favor the occurrence of R. pseudoacacia in Central and Northeastern Europe where this species is still absent or relatively rare. There, controlling the spread of R. pseudoacacia will require monitoring sources of invasion in the landscape and reducing the occurrence of this species. The expected effects of climate change will likely be observed 20 years earlier than previously forecasted. Hence we highlighted the urgent need for acceleration of policies aimed at climate change mitigation in Europe. Also, our results showed the need for using more complete distribution data to analyze potential niche models.
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Affiliation(s)
- Radosław Puchałka
- Department of Ecology and Biogeography, Nicolaus Copernicus University in Toruń, Toruń, Poland
- Centre for Climate Change Research, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | | | - Michaela Vítková
- Department of Invasion Ecology, Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
| | - Jiří Sádlo
- Department of Invasion Ecology, Czech Academy of Sciences, Institute of Botany, Průhonice, Czech Republic
| | - Marcin Klisz
- Department of Silviculture and Genetics, Forest Research Institute, Sękocin Stary, Poland
| | - Maksym Netsvetov
- Department of Phytoecology, Institute for Evolutionary Ecology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Yulia Prokopuk
- Department of Phytoecology, Institute for Evolutionary Ecology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Roberts Matisons
- Latvian State Forest Research Institute 'Silava', Salaspils, Latvia
| | - Marcin Mionskowski
- Department of Forest Resources Management, Forest Research Institute, Sękocin Stary, Poland
| | - Tomasz Wojda
- Department of Silviculture and Genetics, Forest Research Institute, Sękocin Stary, Poland
| | - Marcin Koprowski
- Department of Ecology and Biogeography, Nicolaus Copernicus University in Toruń, Toruń, Poland
- Centre for Climate Change Research, Nicolaus Copernicus University in Toruń, Toruń, Poland
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Wang C, Wang S, Fu B, Lü Y, Liu Y, Wu X. Integrating vegetation suitability in sustainable revegetation for the Loess Plateau, China. Sci Total Environ 2021; 759:143572. [PMID: 33213918 DOI: 10.1016/j.scitotenv.2020.143572] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 10/29/2020] [Accepted: 11/02/2020] [Indexed: 06/11/2023]
Abstract
Revegetation is accelerating globally due to its benefits for ecosystem restoration, desertification prevention, and climate change mitigation. The Loess Plateau has suffered serious erosion in the past decades, and revegetation projects, such as those under the 'Grain for Green' program, have been conducted for soil erosion prevention. The irrational distribution of artificial plantations had negative consequences, including vegetation degradation, soil drying, and decreases in streamflow. Determining the suitable plant species is critical in guiding the design of revegetation programs and may help delimit the suitable boundaries for artificial plantations. In this study, we used an eco-hydrological model to quantify the suitability of two typical revegetation species (Robinia pseudoacacia and Stipa bungeana) using a developed vegetation suitability equation, which estimates the water use/water stress trade-off. The results showed that R. pseudoacacia was more sensitive to water stress than S. bungeana. The water use of both species varied along the precipitation gradient, and S. bungeana generally had a higher water use than R. pseudoacacia. Suitable areas for R. pseudoacacia were mainly located in the northeastern part of the plateau. By overlaying the suitable boundaries for R. pseudoacacia on the current land cover, we found that the area of forests distributed in unsuitable regions reached 7.31% of the entire Loess Plateau. Converting forests beyond the suitable boundary to grasslands would increase the water yield (0.51%-12.23%) and slightly decrease the soil retention capacity (0.01%-0.08%), resulting in a 'win-win' situation for sustainable plant-soil ecosystems and soil-water conservations. Additionally, the suitable area of R. pseudoacacia is predicted to shrink under projected future drying trends. In conclusion, vegetation suitability in the future planning and design of revegetation projects should be considered to effectively tackle the impacts of environmental degradation and climate change in the Loess Plateau.
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Affiliation(s)
- Cong Wang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Shuai Wang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, No. 19, XinJieKouWai Street, Beijing 100875, China
| | - Bojie Fu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
| | - Yihe Lü
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
| | - Yuanxin Liu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; Academy for Multidisciplinary Studies, Capital Normal University, No.105, Xisanhuanbeilu Road, Beijing 100048, China
| | - Xing Wu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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Wang X, Guo X, Du N, Guo W, Pang J. Rapid nitrogen fixation contributes to a similar growth and photosynthetic rate of Robinia pseudoacacia supplied with different levels of nitrogen. Tree Physiol 2021; 41:177-189. [PMID: 33051683 DOI: 10.1093/treephys/tpaa129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
Robinia pseudoacacia L. is a legume species that is widely used in afforestation, which has high N2 fixation capacity and rapid growth rate. Both nitrogen (N) supply and phenology affect plant growth, photosynthesis and leaf senescence. The aim of this study was to determine how N supply affects N2 fixation, leaf photosynthesis and senescence of R. pseudoacacia at different phenological stages. Seedlings of R. pseudoacacia were supplied with different levels of 15N-labelled NH4NO3 solution, with seedlings of Sophora japonica Linn. as reference plants to calculate the percentage of N derived from the atmospheric N2 (%Ndfa). Compared with plants supplied with a high N level, those with a low N supply had a higher %Ndfa at an early developmental stage. Nitrogen fixation compensated the effect of a low N supply on plant growth in R. pseudoacacia. A high N supply decreased biomass allocation to lateral roots and nodules, and increased the relative growth rate of plant height as well as specific leaf area. The eighth mature compound leaf of R. pseudoacacia tended to have a higher net photosynthetic rate than the fourth leaf, and the leaves still maintained a moderate photosynthetic rate in early autumn. Plants tended to allocate more biomass to leaves at an early developmental stage and to stems and roots at a later developmental stage (3 months old). The N level did not affect leaf photosynthesis at different phenological stages, primarily due to (i) a high %Ndfa under low N supply at early growing stage, and a similar high %Ndfa under all N supplies at a late growing stage, and (ii) the delayed greening phenotype of expanding leaves to save nutrients for mature leaves.
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Affiliation(s)
- Xiao Wang
- Institute of Ecology and Biodiversity, Shandong Province Engineering and Technology Research Center for Vegetation Ecology, School of Life Science, Shandong University, 72 Binhai Road, Jimo, Qingdao 266237, People's Republic of China
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth WA 6009, Australia
| | - Xiao Guo
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, 700 Changcheng Road, Qingdao 266109, People's Republic of China
| | - Ning Du
- Institute of Ecology and Biodiversity, Shandong Province Engineering and Technology Research Center for Vegetation Ecology, School of Life Science, Shandong University, 72 Binhai Road, Jimo, Qingdao 266237, People's Republic of China
| | - Weihua Guo
- Institute of Ecology and Biodiversity, Shandong Province Engineering and Technology Research Center for Vegetation Ecology, School of Life Science, Shandong University, 72 Binhai Road, Jimo, Qingdao 266237, People's Republic of China
| | - Jiayin Pang
- School of Agriculture and Environment, The UWA Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Perth WA 6009, Australia
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46
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Li Q, Liu GB, Yang JC, Tuo DF, Zhang Z. [Construction and application of a new index for quantifying root erosion resistance: Root framework erosion resistance index]. Ying Yong Sheng Tai Xue Bao 2020; 31:2955-2962. [PMID: 33345496 DOI: 10.13287/j.1001-9332.202009.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The matching of root system is a key factor driving the resistance of plant community to soil erosion. In this study, Amoeba graphical method was used to establish a root framework erosion resistance index (ERIrf, %) from three dimensions of root morphology, quantity and spatial concerns to quantify the effective of root erosion resistance by plant community. We analyzed root growth characteristics of plant community from abandoned land, Caragana korshinskii and Robinia pseudoacacia communities in loess hilly area. The results showed that the parameters of constructing the root framework erosion resistance index included the acting coefficient of root framework (α), root density (Rb, kg·m-3), root framework degree (S), soil bulk density (ρ, g·cm-3), and soil and water conservation coefficient (φ). The equation could be expressed as ERIrf=α×Rd×S×φρ×100%. This root framework erosion resistance index well represented the erosion resistance effects of plant root system. Logarithmic function could better fit the relationship between soil erosion resis-tance ability and root framework erosion resistance index. Our findings would provide scientific reference for the construction of anti-erosion vegetation community and assessment of ecological construction.
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Affiliation(s)
- Qiang Li
- Yulin University/Shaanxi Key Laboratory of Ecological Restoration in Shaanbei Mining Area, Yulin 719000, Shaanxi, China
| | - Guo-Bin Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Yangling 712100, Shaanxi, China
| | - Jun-Cheng Yang
- Yulin University/Shaanxi Key Laboratory of Ecological Restoration in Shaanbei Mining Area, Yulin 719000, Shaanxi, China
- Institute of Agricultural Resources and Regional Planing, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Deng-Feng Tuo
- Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China
| | - Zheng Zhang
- Yulin University/Shaanxi Key Laboratory of Ecological Restoration in Shaanbei Mining Area, Yulin 719000, Shaanxi, China
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Nascimbene J, Benesperi R, Casazza G, Chiarucci A, Giordani P. Range shifts of native and invasive trees exacerbate the impact of climate change on epiphyte distribution: The case of lung lichen and black locust in Italy. Sci Total Environ 2020; 735:139537. [PMID: 32485454 DOI: 10.1016/j.scitotenv.2020.139537] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/07/2020] [Accepted: 05/17/2020] [Indexed: 06/11/2023]
Abstract
While changing climatic conditions may directly impact species distribution ranges, indirect effects related to altered biotic interactions may exacerbate range shifts. This situation fully applies to epiphytic lichens that are sensitive to climatic factors and strongly depend on substrate occurrence and features for their dispersal and establishment. In this work, we modelled the climatic suitability across Italy under current and future climate of the forest species Lobaria pulmonaria, the lung lichen. Comparatively, we modelled the suitability of its main tree species in Italy, as well as that of the alien tree Robinia pseudoacacia, black locust, whose spread may cause the decline of many forest lichen species. Our results support the view that climate change may cause range shifts of epiphytes by altering the spatial pattern of their climatic suitability (direct effect) and simultaneously causing range shifts of their host-tree species (indirect effect). This phenomenon seems to be emphasized by the invasion of alien trees, as in the case of black locust, that may replace native host tree species. Results indicate that a reduction of the habitat suitability of the lung lichen across Italy should be expected in the face of climate change and that this is coupled with a loss of suitable substrate. This situation seems to be determined by two main processes that act simultaneously: 1) a partial reduction of the spatial overlap between the climatic niche of the lung lichen and that of its host tree species, and 2) the invasion of native woods by black locust. The case of lung lichen and black locust in Italy highlights that epiphytes are prone to both direct and indirect effects of climate change. The invasion of alien trees may have consequences that are still poorly evaluated for epiphytes.
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Affiliation(s)
- Juri Nascimbene
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | | | - Gabriele Casazza
- IMBE, Aix Marseille Université, Avignon Université, CNRS, IRD, IMBE. Technopôle de l'Arbois-Méditerranée, Aix-en-Provence, France
| | - Alessandro Chiarucci
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
| | - Paolo Giordani
- Department of Pharmacy, University of Genova, Genova, Italy
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Jia X, Zhang N, Zhao Y, Wang L, Zhang C, Li X, Cao K, Gao Y. A consecutive 4-year elevated air temperature shaped soil bacterial community structure and metabolic functional groups in the rhizosphere of black locust seedlings exposed to lead pollution. Sci Total Environ 2020; 732:139273. [PMID: 32428772 DOI: 10.1016/j.scitotenv.2020.139273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
Global warming may influence the bioavailability and mobility of heavy metals by stimulating or inhibiting plant growth, thereby influencing rhizosphere soil chemistry and microbial characteristics. Black locust has been widely planted in China as a promising species for afforestation programs, farmland shelterbelt projects, and soil restoration in mined areas because of its rapid growth and adaptability to environmental stressors. Here, we examined soil bacterial community structure and predicted bacterial metabolic function in the rhizosphere of black locust exposed to elevated temperature (+1.99 °C) and Pb for 4 years. Elevated temperature significantly (p < 0.05) reduced total carbon (TC), total nitrogen (TN), and total sulfur (TS) contents in above-ground parts but increased TC and TN contents in roots and seedling height under Pb exposure. Elevated temperature significantly (p < 0.05) increased Pb availability and raised pH, TC, TN, TS and water-soluble organic carbon (WSOC) contents, and the C:H ratio in rhizosphere soils under Pb exposure. The interactive effects between Pb and temperature on pH, TC, TH, TS, WSOC, and the C:H ratio were significant (p < 0.05). Elevated temperature significantly (p < 0.05) reduced the diversity and the richness of bacterial community, altered genus-level bacterial community composition, and improved (p < 0.05) the relative abundances of some bacteria involving in terpenoids and polyketides and xenobiotics biodegradation metabolism under Pb exposure. Canonical correspondence analysis indicated that pH, WSOC, C:N ratio, and soluble Pb were significant (p < 0.05) factors on the relative abundance of bacterial genera, such as Ochrobactrum and Sphingomnas. Overall, long-term elevated temperature resulted in changes in rhizosphere soil characteristics and Pb availability, thus affecting the bacterial community structure and metabolic functional groups. The conclusion helps us understand the response mechanism of soil bacteria in the rhizosphere to heavy metals under global warming scenarios.
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Affiliation(s)
- Xia Jia
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China.
| | - Ningjing Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Yonghua Zhao
- School of Land Engineering, Chang'an University, Xi'an 710054, PR China
| | - Lu Wang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - ChunYan Zhang
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Xiaodi Li
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Kemeng Cao
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of Education, Shaanxi Key Laboratory of Land Consolidation, School of Water and Environment, Chang'an University, Xi'an 710054, PR China
| | - Yunfen Gao
- School of Land Engineering, Chang'an University, Xi'an 710054, PR China
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Wang X, Zhong Z, Li W, Liu W, Zhang X, Wu S, Ren Z, Wu Q, Shen Z, Ren C, Yang G, Han X. Effects of Robinia pseudoacacia afforestation on aggregate size distribution and organic C dynamics in the central Loess Plateau of China: A chronosequence approach. J Environ Manage 2020; 268:110558. [PMID: 32383654 DOI: 10.1016/j.jenvman.2020.110558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/06/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
Afforestation has been proven to have enormous potential for carbon (C) sequestration; however, the dynamics of aggregate-associated organic carbon (OC) following afforestation and their contribution to changes in bulk soil OC are not well understood in regions with serious soil erosion. Therefore, we investigated the dynamics of OC associated with aggregates along a Robinia pseudoacacia (RP) afforestation chronosequence in the Loess Plateau. Soil aggregate size distribution and OC dynamics in bulk soil were analyzed 10, 18, 28, and 42 years after RP afforestation at depths of 0-20 cm and 20-40 cm. Results showed that total macroaggregates (>0.25 mm), mean weight diameter, and geometric mean diameter increased significantly with stand age, after 42 years of afforestation, increased by 433.5%, 437.2%, 302.1% in the 0-20 cm depth, respectively, while microaggregate amounts decreased by 52.9%, and the proportions of silt + clay fraction showed no obvious changes. Long-term afforestation increased OC content and stock, both in bulk soil (245.6% and 222.9% in the 0-20 cm depth, respectively) and soil aggregates. The improvement of soil structure and enrichment of OC stocks were greater at the 0-20 cm depth than the 20-40 cm depth. In addition, small macroaggregates (2-0.25 mm) contained the highest OC content and microaggregates (<0.025 mm) had the highest OC stocks regardless of soil depth and stand age. Across the afforestation chronosequence, OC content and stock in bulk soil positively correlated with large macroaggregate (>2 mm) amounts and small macroaggregate (2-0.25 mm) associated OC dynamics (P < 0.01). These results indicated that changes in bulk soil OC dynamics mainly depend on changes in the proportion of large macroaggregates and in the OC dynamics associated with small macroaggregates after RP afforestation.
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Affiliation(s)
- Xing Wang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Zekun Zhong
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Wenjie Li
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Weichao Liu
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Xinyi Zhang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Shaojun Wu
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Zhaoxuan Ren
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Qimeng Wu
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Zhaoyang Shen
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chengjie Ren
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Gaihe Yang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China
| | - Xinhui Han
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China; Shaanxi Engineering Research Center of Circular Agriculture, Yangling, 712100, Shaanxi, China.
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50
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Liu XE, Su SP. [Hydrological functions of litters under five typical plantations in southern and northern mountains of Lanzhou City, Northwest China]. Ying Yong Sheng Tai Xue Bao 2020; 31:2574-2582. [PMID: 34494779 DOI: 10.13287/j.1001-9332.202008.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Combined with field observation and indoor water immersion test, water holding characteristics of litters from five typical plantations (Platycladus orientalis, Robinia pseudoacacia, Populus alba var. pyramidalis, P. orientalis+R. pseudoacacia, P. alba var. pyramidalis+R. pseudoacacia) in southern and northern mountains of Lanzhou City were examined. Results showed that litter mass under the plantations ranged from 13.50 to 47.01 t·hm-2, with an order of P. alba var. pyramidalis+R. pseudoacacia>P. orientalis+R. pseudoacacia>P. orientalis>R. pseudoacacia>P. alba var. pyramidalis. The percentage of un-decomposed litters was greater than that of semi-decomposed litters in all plantations except for P. orientalis plantations. The maximum water-holding rate of litters ranged from 190.8% to 262.7%, with the greatest value in the P. alba var. pyramidalis+R. pseudoa-cacia and the lowest in P. orientalis plantations. The maximum water-holding capacity of litters was 35.29-123.59 t·hm-2, with an order of P. alba var. pyramidalis+R. pseudoacacia>P. orientalis+R. pseudoacacia>R. pseudoacacia>P. orientalis>P. alba var. pyramidalis. Litter water absorption rate declined linearly within the first hour, and then decreased slowly. Semi-decomposed litters had a higher water-absorption rate than un-decomposed litters. The maximum water retaining amount and effective retaining amount of the litters were P. alba var. pyramidalis+R. pseudoacacia>P. orientalis+R. pseudoacacia>P. orientalis>R. pseudoacacia>P. alba var. pyramidalis. P. alba var. pyramidalis+R. pseudoacacia had the highest effective retaining rate. P. alba var. pyramidalis+R. pseudoacacia plantation had highest capacity for soil and water conservation in southern and northern mountains of Lanzhou City.
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Affiliation(s)
- Xiao-E Liu
- College of Forestry, Gansu Agricultural University, Lanzhou 730070, China
| | - Shi-Ping Su
- College of Forestry, Gansu Agricultural University, Lanzhou 730070, China
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