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Sun Y, Guo J, Alejandro Jose Mur L, Xu X, Chen H, Yang Y, Yuan H. Nitrogen starvation modulates the sensitivity of rhizobacterial community to drought stress in Stevia rebaudiana. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120486. [PMID: 38417363 DOI: 10.1016/j.jenvman.2024.120486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/06/2024] [Accepted: 02/20/2024] [Indexed: 03/01/2024]
Abstract
Alterations in water regimes or nitrogen (N) availability lead to shifts in the assemblage of rhizosphere microbial community; however, how the rhizosphere microbiome response to concurrent changes in water and N availability remains largely unclear. Herein, we investigated the taxonomic and functional characteristics of rhizobacteria associated with stevia (Stevia rebaudiana Bertoni) under varying combinations of water and N levels. Community diversity and predicted functions of rhizobacteria were predominantly altered by drought stress, with N-starvation modulating these effects. Moreover, N fertilization simplified the ecological interactions within rhizobacterial communities and heightened the relative role of stochastic processes on community assembly. In terms of rhizobacterial composition, we observed both common and distinctive changes in drought-responsive bacterial taxa under different N conditions. Generally, the relative abundance of Proteobacteria and Bacteroidetes phyla were depleted by drought stress but the Actinobacteria phylum showed increases. The rhizobacterial responses to drought stress were influenced by N availability, where the positive response of δ-proteobacteria and the negative response of α- and γ-proteobacteria, along with Bacteroidetes, were further heightened under N starvation. By contrast, under N fertilization conditions, an amplified negative or positive response to drought were demonstrated in Firmicutes and Actinobacteria phyla, respectively. Further, the drought-responsive rhizobacteria were mostly phylogenetically similar, but this pattern was modulated under N-rich conditions. Overall, our findings indicate an N-dependent specific restructuring of rhizosphere bacteria under drought stress. These changes in the rhizosphere microbiome could contribute to enhancing plant stress tolerance.
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Affiliation(s)
- Yuming Sun
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing, 210014, China
| | - Junjie Guo
- State Key Lab of Biocontrol, School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, Guangdong, 518107, China.
| | - Luis Alejandro Jose Mur
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, SY23 3DA, UK
| | - Xiaoyang Xu
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing, 210014, China
| | - Hao Chen
- State Key Lab of Biocontrol, School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Yongheng Yang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing, 210014, China
| | - Haiyan Yuan
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing, 210014, China.
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Wang M, Chen S, Li S, Zhang J, Sun Y, Wang C, Ni D. Enhancement of nitrogen cycling and functional microbial flora by artificial inoculation of biological soil crusts in sandy soils of highway slopes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:4400-4411. [PMID: 38102430 DOI: 10.1007/s11356-023-31461-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/06/2023] [Indexed: 12/17/2023]
Abstract
Biological soil crusts (BSCs) are common in arid and semi-arid ecosystems and enhance soil stability and fertility. Highway slopes severely deplete the soil ecological structure and soil nutrients, hindering plant survival. The construction of highway slope BSCs under human intervention is critical to ensure the long-term stable operation of the slope ecosystem. This study investigated the variation rules and interaction mechanisms between soil nutrients and microbial communities in the subsoil BSCs on highway slopes. Bacterial 16S rRNA high-throughput sequencing was employed to investigate the dynamic compositional changes in the microbial community and perform critical metabolic predictive analyses of functional bacteria. This study revealed that the total soil nitrogen increased significantly from 0.557 to 0.864 g/kg after artificial inoculation with desert Phormidium tenue and Scytonema javanicum. Actinobacteria (44-48%) and Proteobacteria (28-31%) were the dominant phyla in all samples. The abundance of Cyanobacteria, Cytophagaceae, and Chitinophagaceae increased significantly after inoculation. PICRUST analysis showed that the main metabolic pathways of soil microorganisms on highway slopes included cofactor and vitamin, nucleotide, and amino acid metabolisms. These findings suggest that the artificial inoculation with Phormidium tenue and Scytonema javanicum could alter soil microbial distribution to promote soil development on highway slopes toward nutrient accumulation.
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Affiliation(s)
- Mengyan Wang
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Sibao Chen
- Key Laboratory of Changjiang Regulation and Protection of Ministry of Water Resources, Changjiang Institude of Survey Planning Design and Research, Wuhan, 430010, China
| | - Shuangshuang Li
- College of Energy and Environmental Engineering, Hebei University of Engineering, Handan, 056038, China
| | - Jianhong Zhang
- China International Engineering Consulting Corporation, Ltd., Beijing, 100048, China
| | - Yingxue Sun
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China
| | - Chun Wang
- State Environmental Protection Key Laboratory of Food Chain Pollution Control, School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China.
- Key Laboratory of Road Traffic Environmental Protection Technology, Ministry of Transport, Beijing, 100088, China.
| | - Dong Ni
- Key Laboratory of Road Traffic Environmental Protection Technology, Ministry of Transport, Beijing, 100088, China
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Wang H, Li M, Yang Y, Sun P, Zhou S, Kang Y, Xu Y, Yuan X, Feng Z, Jin W. Physiological and molecular responses of different rose ( Rosa hybrida L.) cultivars to elevated ozone levels. PLANT DIRECT 2023; 7:e513. [PMID: 37484545 PMCID: PMC10359767 DOI: 10.1002/pld3.513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/18/2023] [Accepted: 06/23/2023] [Indexed: 07/25/2023]
Abstract
The increasing ground-level ozone (O3) pollution resulting from rapid global urbanization and industrialization has negative effects on many plants. Nonetheless, many gaps remain in our knowledge of how ornamental plants respond to O3. Rose (Rosa hybrida L.) is a commercially important ornamental plant worldwide. In this study, we exposed four rose cultivars ("Schloss Mannheim," "Iceberg," "Lüye," and "Spectra") to either unfiltered ambient air (NF), unfiltered ambient air plus 40 ppb O3 (NF40), or unfiltered ambient air plus 80 ppb O3 (NF80). Only the cultivar "Schloss Mannheim" showed significant O3-related effects, including foliar injury, reduced chlorophyll content, reduced net photosynthetic rate, reduced stomatal conductance, and reduced stomatal apertures. In "Schloss Mannheim," several transcription factor genes-HSF, WRKY, and MYB genes-were upregulated by O3 exposure, and their expression was correlated with that of NCED1, PP2Cs, PYR/PYL, and UGTs, which are related to ABA biosynthesis and signaling. These results suggest that HSF, WRKY, and MYB transcription factors and ABA are important components of the plant response to O3 stress, suggesting a possible strategy for cultivating O3-tolerant rose varieties.
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Affiliation(s)
- Hua Wang
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center of Functional FloricultureBeijingChina
| | - Maofu Li
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center of Functional FloricultureBeijingChina
| | - Yuan Yang
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center for Deciduous Fruit TreesBeijingChina
| | - Pei Sun
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center of Functional FloricultureBeijingChina
| | - Shuting Zhou
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center of Functional FloricultureBeijingChina
| | - Yanhui Kang
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center of Functional FloricultureBeijingChina
| | - Yansen Xu
- School of Applied MeteorologyNanjing University of Information Science & TechnologyNanjingChina
| | - Xiangyang Yuan
- School of Applied MeteorologyNanjing University of Information Science & TechnologyNanjingChina
| | - Zhaozhong Feng
- School of Applied MeteorologyNanjing University of Information Science & TechnologyNanjingChina
| | - Wanmei Jin
- Institute of Forestry and PomologyBeijing Academy of Agriculture and Forestry SciencesBeijingChina
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China)Ministry of Agriculture and Rural AffairsBeijingChina
- Beijing Engineering Research Center of Functional FloricultureBeijingChina
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Shah ST, Basit A, Mohamed HI, Ullah I, Sajid M, Sohrab A. Der Einsatz von Mulchen bei verschiedenen Bodenbearbeitungsbedingungen reduziert den Ausstoß von Treibhausgasen – ein Überblick. GESUNDE PFLANZEN 2023; 75:455-477. [DOI: 10.1007/s10343-022-00719-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 07/25/2022] [Indexed: 10/26/2023]
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Wang J, Tan Y, Shi X, Leng P, Zhang G. Simplifying network complexity of soil bacterial community exposed to short-term carbon dioxide and ozone enrichment in a paddy soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 326:116656. [PMID: 36375434 DOI: 10.1016/j.jenvman.2022.116656] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Global atmospheric changes are characterized by increases in carbon dioxide (CO2) and ozone (O3) concentrations, with important consequences for the soil microbial community. However, the influences of CO2 and O3 enrichment on the biomass, diversity, composition, and functioning of the soil bacterial community remain unclear. We investigated the effects of short-term factorial combinations of CO2 (by 200 ppm) and O3 (by 40 ppb) enrichment on the dynamics of soil bacterial community in paddy soils with two rice varieties (Japonica, Nangeng 5055 (NG5055) vs. Wuyujing 3 (WYJ3)) in an open top chamber facility. When averaged both varieties, CO2 and O3 enrichment showed no individual or combined effect on the abundance or diversity of soil bacterial community. Similarly, CO2 enrichment did not exert any significant effect on the relative abundance of bacterial phyla. However, O3 enrichment significantly reduced the relative abundance of Myxococcota phylum by a mean of 37.5%, which negatively correlated to root N content. Compared to ambient conditions, soil bacterial community composition was separated by CO2 enrichment in NG5055, and by both CO2 and O3 enrichment in WYJ3, with root N content identified as the most influential factor. These results indicated that root N was the top direct predictor for the community composition of soil bacteria. The COG (cluster of orthologous groups) protein of cell motility was significantly reduced by 5.8% under CO2 enrichment, and the COG protein of cytoskeleton was significantly decreased by 14.7% under O3 enrichment. Furthermore, the co-occurrence network analysis indicated that both CO2 and O3 enrichment decreased the network complexity of the soil bacterial community. Overall, our results highlight that continuous CO2 and O3 enrichment would potentially damage the health of paddy soils through adverse impacts on the associations and functional composition of soil microbial communities.
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Affiliation(s)
- Jianqing Wang
- Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Yunyan Tan
- Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Xiuzhen Shi
- Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China.
| | - Peng Leng
- Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Guoyou Zhang
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China.
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Shu X, Zhang K, Zhang Q, Wang W. Changes in the composition of rhizosphere bacterial communities in response to soil types and acid rain. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116493. [PMID: 36265236 DOI: 10.1016/j.jenvman.2022.116493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/07/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
It is widely known how acid rain negatively impacts plant physiology. However, the magnitude of these effects may depend on soil types. Although the response of aboveground parts has received much attention, the effects of soil types and acid rain on underground processes are yet to be studied, specifically with respect to the composition and diversity of bacterial communities in the rhizosphere. Based on a high throughput sequencing approach, this study examined how different soil types, acid rain of different pH, and interactions between the two factors influenced the growth and rhizosphere bacterial communities of Jatropha curcas L. The present study pointed out that the soil pH, total nitrogen (TN), total phosphorus (TP), total potassium (TK), and total organic carbon/total nitrogen (C/N) were more related to soil type than to acid rain. The growth of J. curcas aboveground was mainly affected by acid rain, while the underground growth was mainly influenced by soil type. Changes in bacterial abundance indicated that the genera (Burkholderia-Paraburkholde, Bryobacter, Cupriavidus, Mycobacterium, and Leptospirillu) and phyla (Acidobacteria and Actinobacteria) could likely resist acid rain to some extent, with Acidobacteria, Gemmatimonadetes and Proteobacteria being well adapted to the copiotrophic environments. Results of correlational analyses between Firmicutes and soil properties (pH, TN, TK) further indicated that this phylum was also well adapted to a nutrient-deficient habitat of low pH. Finally, while Mycobacterium and Bradyrhizobium could adapt to low pH, high soil TK contents were not conducive to their enrichment. The results also showed that acid rain shifted the bacterial groups from fast-growing copiotrophic populations to slow-growing oligotrophic ones. The RDA analysis, and Pearson's rank correlation coefficients indicated that soil pH and TK were the main factors influencing bacterial richness.
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Affiliation(s)
- Xiao Shu
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, PR China.
| | - KeRong Zhang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, PR China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074, PR China.
| | - QuanFa Zhang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, PR China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074, PR China
| | - WeiBo Wang
- Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, PR China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan, 430074, PR China.
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7
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Tao S, Yin H, Fang Y, Zhang Y, Zhang N, Qu L. Elevated O 3 concentrations alter the compartment-specific microbial communities inhabiting rust-infected poplars. Environ Microbiol 2022; 25:990-1006. [PMID: 36582119 DOI: 10.1111/1462-2920.16332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/29/2022] [Indexed: 12/31/2022]
Abstract
Elevated ozone (O3 ) can affect the susceptivity of plants to rust pathogens. However, the collective role of microbiomes involved in such interaction remains largely elusive. We exposed two cultivated poplar clones exhibiting differential O3 sensitivities, to non-filtered ambient air (NF), NF + 40 ppb or NF + 60 ppb O3 -enriched air in field open-top chambers and then inoculated Melampsora larici-populina urediniospores to study their response to rust infection and to investigate how microbiomes inhabiting four compartments (phyllosphere, rhizosphere, root endosphere, bulk soil) are involved in this response. We found that hosts with higher O3 sensitivity had significantly lower rust severity than hosts with lower sensitivity. Furthermore, the effect of increased O3 on the diversity and composition of microbial communities was highly dependent on poplar compartments, with the microbial network complexity patterns being completely opposite between the two clones. Notably, microbial source analysis estimated that phyllosphere fungal communities predominately derived from root endosphere and vice versa, suggesting a potential transmission mechanism between plant above- and below-ground systems. These promising results suggest that further investigations are needed to better understand the interactions of abiotic and biotic stresses on plant performance and the role of the microbiome in driving these changes.
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Affiliation(s)
- Siqi Tao
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China.,Ecological Observation and Research Station of Heilongjiang Sanjiang Plain Wetlands, National Forestry and Grassland Administration, Shuangyashan, People's Republic of China
| | - Haiyue Yin
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China
| | - Yue Fang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China
| | - Yunxia Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China
| | - Naili Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China.,Ecological Observation and Research Station of Heilongjiang Sanjiang Plain Wetlands, National Forestry and Grassland Administration, Shuangyashan, People's Republic of China
| | - Laiye Qu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing, China
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Shang B, Li Z, Yuan X, Xu Y, Feng Z. Effects of elevated ozone on the uptake and allocation of macronutrients in poplar saplings above- and belowground. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158044. [PMID: 35981595 DOI: 10.1016/j.scitotenv.2022.158044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Ground-level ozone (O3) is a secondary air pollutant and affects the roots and soil processes of trees. Therefore, O3 can affect the uptake and allocation of nutrients in trees, which merits further clarification. A fumigation experiment with five O3 levels was conducted in 15 open top chambers for two poplar clones, and the concentrations of six macronutrients (N, P, K, S, Ca, Mg) in different organs and leaf positions were determined. Under all O3 levels, the concentration of mobile nutrients (N and P) was higher in upper leaves than in lower leaves, while the non-mobile nutrients (Ca and S) concentration was the opposite. Relative to charcoal filtered ambient air (CF), high O3 treatment (NF60) significantly increased the concentration of mobile nutrients K and Mg in upper leaves by 38 % and 33 %, in lower leaves by 142 % and 65 %, respectively, which suggested the effect of O3 on their concentrations was greater at the lower leaf position than at the upper leaf position. Elevated O3 significantly increased the macronutrient concentrations in most organs. The effects of O3 on nutrient concentrations were attributed using graphical vector analysis, suggested that the increase of nutrient concentration in the shoots was attributed to excessive nutrient stocks, while their increase in root was attributed to the "concentration" effect. Compared to CF, NF60 also reduced the root-to-shoot ratio of N, P, S, K, Ca and Mg stocks by 34 %, 39 %, 37 %, 64 %, 46 % and 42 %, respectively, indicating the allocation of increased nutrients to shoots in response to O3 stress. Changes in the allocation pattern of nutrients in different leaf positions and organs of poplar were primarily in response to O3 stress since these nutrients play important roles in some physiological processes. These results will help improve the plantation nutrient utilization by optimizing fertilizer management regimes under O3 pollution.
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Affiliation(s)
- Bo Shang
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Zhengzhen Li
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Xiangyang Yuan
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Yansen Xu
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Zhaozhong Feng
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
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Zhan C, Matsumoto H, Liu Y, Wang M. Pathways to engineering the phyllosphere microbiome for sustainable crop production. NATURE FOOD 2022; 3:997-1004. [PMID: 37118297 DOI: 10.1038/s43016-022-00636-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 10/12/2022] [Indexed: 04/30/2023]
Abstract
Current disease resistance breeding, which is largely dependent on the exploitation of resistance genes in host plants, faces the serious challenges of rapidly evolving phytopathogens. The phyllosphere is the largest biological surface on Earth and an untapped reservoir of functional microbiomes. The phyllosphere microbiome has the potential to defend against plant diseases. However, the mechanisms of how the microbiota assemble and function in the phyllosphere remain largely elusive, and this restricts the exploitation of the targeted beneficial microbes in the field. Here we review the endogenous and exogenous cues impacting microbiota assembly in the phyllosphere and how the phyllosphere microbiota in turn facilitate the disease resistance of host plants. We further construct a holistic framework by integrating of holo-omics, genetic manipulation, culture-dependent characterization and emerging artificial intelligence techniques, such as deep learning, to engineer the phyllosphere microbiome for sustainable crop production.
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Affiliation(s)
- Chengfang Zhan
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, China
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Haruna Matsumoto
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, China
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China
| | - Yufei Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Mengcen Wang
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, China.
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China.
- Global Education Program for AgriScience Frontiers, Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
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Wang J, Shi X, Tan Y, Wang L, Zhang G. Elevated O 3 Exerts Stronger Effects than Elevated CO 2 on the Functional Guilds of Fungi, but Collectively Increase the Structural Complexity of Fungi in a Paddy Soil. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02124-3. [PMID: 36258041 DOI: 10.1007/s00248-022-02124-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Global climate change is characterized by altered global atmospheric composition, including elevated CO2 and O3, with important consequences on soil fungal communities. However, the function and community composition of soil fungi in response to elevated CO2 together with elevated O3 in paddy soils remain largely unknown. Here we used twelve open-top chamber facilities (OTCs) to evaluate the interactive effect of CO2 (+ 200 ppm) and O3 (+ 40 ppb) on the diversity, gene abundance, community structure, and functional composition of soil fungi during the growing seasons of two rice cultivars (Japonica, Wuyujing 3 vs. Nangeng 5055) in a Chinese paddy soil. Elevated CO2 and O3 showed no individual or combined effect on the gene abundance or relative abundance of soil fungi, but increased structural complexity of soil fungal communities, indicating that elevated CO2 and/or O3 promoted the competition of species-species interactions. When averaged both cultivars, elevated CO2 showed no individual effect on the diversity or abundance of functional guilds of soil fungi. By contrast, elevated O3 significantly reduced the relative abundance and diversity of symbiotrophic fungi by an average of 47.2% and 39.1%, respectively. Notably, elevated O3 exerts stronger effects on the functional processes of fungal communities than elevated CO2. The structural equation model revealed that elevated CO2 and/or O3 indirectly affected the functional composition of soil fungi through community structure and diversity of soil fungi. Root C/N and soil environmental parameters were identified as the top direct predictors for the community structure of soil fungi. Furthermore, significant correlations were identified between saprotrophic fungi and root biomass, symbiotrophic fungi and root carbon, the pathotroph-symbiotroph and soil pH, as well as pathotroph-saprotroph-symbiotroph and soil microbial biomass carbon. These results suggest that climatic factors substantially affected the functional processes of soil fungal, and threatened soil function and food production, highlighting the detrimental impacts of high O3 on the function composition of soil biota.
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Affiliation(s)
- Jianqing Wang
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China
- School of Geographical Sciences, Fujian Normal University, Fuzhou, China
| | - Xiuzhen Shi
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China.
- School of Geographical Sciences, Fujian Normal University, Fuzhou, China.
| | - Yunyan Tan
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China
- School of Geographical Sciences, Fujian Normal University, Fuzhou, China
| | - Liyan Wang
- Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou, 350007, China
- School of Geographical Sciences, Fujian Normal University, Fuzhou, China
| | - Guoyou Zhang
- Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
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You X, Wang S, Du L, Wu H, Wei Y. Effects of organic fertilization on functional microbial communities associated with greenhouse gas emissions in paddy soils. ENVIRONMENTAL RESEARCH 2022; 213:113706. [PMID: 35714686 DOI: 10.1016/j.envres.2022.113706] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Soil microbial communities play a key role in the biochemical processes and nutrient cycles of the soil ecosystem and their byproducts, including greenhouse gases (GHGs). Organic fertilization influences bacterial soil biodiversity and is an essential emission source of GHGs in paddy soil ecosystems. However, the impact of organic fertilization on the functional microorganisms associated with the GHGs methane and nitrous oxide remains unknown. We conducted paddy soil field experiments under three different treatments (no fertilization, base fertilization, and organic fertilization) to investigate the contribution of organic fertilization to soil nutrients and the functional microorganisms associated with GHG emissions. We found that organic fertilization effectively increased the soil organic matter (P < 0.001), soil organic carbon (P < 0.001), and total nitrogen (P < 0.05) as well as the richness (operational taxonomic units and abundance-based coverage estimators) of the methanogenic communities. Correlation analyses showed that methanogenic communities that were present in abundance were more vulnerable to perturbations in soil properties compared to nitrifying bacterial communities. Partial least squares path model analyses elucidated that organic fertilization directly affected both methanogenic communities and nitrifying bacterial communities (P < 0.05), thereby accelerating methane emissions. Strong co-occurrence networks were observed within the soil-dominant phyla Acidobacteria, Bacteroidetes, and Proteobacteria. Our findings highlight the impact of organic fertilization on soil nutrients and functional microorganisms and guide mitigating GHG emissions from paddy soil agroecosystems.
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Affiliation(s)
- Xinxin You
- Wenzhou Vocational College of Science and Technology, Wenzhou, Zhejiang Province, 325006, PR China
| | - Sheng Wang
- Wenzhou Vocational College of Science and Technology, Wenzhou, Zhejiang Province, 325006, PR China
| | - Linna Du
- Wenzhou Vocational College of Science and Technology, Wenzhou, Zhejiang Province, 325006, PR China; Wencheng Institution of Modern Agriculture and Health-Care Industry, Wenzhou, Zhejiang Province, 325300, PR China.
| | - Huan Wu
- Wenzhou University, Wenzhou, Zhejiang Province, 325027, PR China
| | - Yi Wei
- Wenzhou University, Wenzhou, Zhejiang Province, 325027, PR China
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12
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Sun R, Zheng H, Yin S, Zhang X, You X, Wu H, Suo F, Han K, Cheng Y, Zhang C, Li Y. Comparative study of pyrochar and hydrochar on peanut seedling growth in a coastal salt-affected soil of Yellow River Delta, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 833:155183. [PMID: 35421479 DOI: 10.1016/j.scitotenv.2022.155183] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 03/09/2022] [Accepted: 04/07/2022] [Indexed: 05/25/2023]
Abstract
Biochar (i.e., pyrochar and hydrochar) application is a promising strategy to improve soil quality and productivity. However, the comparison of biochars with different carbonization methods and feedstocks for the plant growth in the coastal salt-affected soil remains limited. In this study, a 30-day microcosmic experiment was conducted to compare the effects of pyrochars and hydrochars derived from reed straw (RPC and RHC) and cow manure (CPC and CHC) on the peanut (Arachis hypogaea L.) seedling growth in a coastal salt-affected soil of Yellow River Delta, China. The results showed that RPC, CHC and CPC significantly elevated fresh shoot weight by 67.77%-89.37%, whereas the RHC amendment showed little effect. The malondialdehyde contents in peanut seedling leaves were significantly declined by 25.28%-35.51% with pyrochar and hydrochar amendments, which might be associated with the enhanced proline contents and K/Na ratios. The stimulation of certain phytohormones (i.e., indole-3-acetic acid, zeatin riboside, gibberellic acid 3) in peanut seedlings with pyrochar and hydrochar amendments might be attributed to the growth enhancement. RPC, CPC and CHC improved the soil properties and fertility such as cation-exchange capacity (CEC), total nitrogen, and available potassium and water holding capacity (WHC) of the coastal salt-affected soil. However, RHC not only significantly decreased soil CEC and WHC, but also increased soil exchangeable sodium percentage. The abundances of soil beneficial bacteria, such as f_Gemmatimonadacea, Sphingomonas, Blastococcus and Lysobacter were enhanced by RPC, CHC and CPC amendments, which were mainly associated with the increased WHC and CEC. Fungal community was less sensitive to pyrochar and hydrochar amendments than bacterial community according to the relative abundance and diversity, and beneficial fungi, such as Oidiodendron and Sarocladium were enriched in the CHC soil. Overall, the application of RPC, CHC and CPC showed greater potentials for the enhancement of peanut growth in a coastal salt-affected soil.
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Affiliation(s)
- Ruixue Sun
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Hao Zheng
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266100, China
| | - Shaojing Yin
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Xin Zhang
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Xiangwei You
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Haiyun Wu
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Fengyue Suo
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Kunxu Han
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Yadong Cheng
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Chengsheng Zhang
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Yiqiang Li
- Marine Agriculture Research Center, Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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13
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Wang Q, Liu Y, Su Y, Cheng C, Shang B, Agathokleous E, Feng Z. Effects of elevated ozone on bacterial communities inhabiting the phyllo- and endo-spheres of rice plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 830:154705. [PMID: 35318051 DOI: 10.1016/j.scitotenv.2022.154705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/16/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
To explore the effects of elevated ozone (O3) on microbial communities inhabiting phyllo- and endo-spheres of Japonica rice leaves, cultivars Nangeng 5055 (NG5055) and Wuyujing 27 (WYJ27) were grown in either charcoal-filtered air (CF) or elevated O3 (ambient O3 + 40 ppb, E-O3) in field open-top chambers (OTCs) during a growing season. E-O3 increased the values of the Shannon (43-80%) and Simpson (34-51%) indexes of the phyllo-and endo-spheric bacterial communities in NG5055. E-O3 also increased the values of the phyllosphere Simpson index by 58% and the endosphere Shannon index by 54% in WYJ27. Both diversity indexes positively correlated with the contents of nitrogen, phosphorus, magnesium, and soluble sugar, and negatively correlated with the contents of starch and condensed tannins. The leaf-associated bacterial community composition significantly changed in both rice cultivars under E-O3. Moreover, the leaf-associated bacterial communities in NG5055 were more sensitive to E-O3 than those in WYJ27. The chemical properties explained 70% and 98% of variations in the phyllosphere and endosphere bacterial communities, respectively, suggesting a predominant role of chemical status for the endospheric bacterial community. Most variation (57.3%) in the endosphere bacterial community assembly was explained by phosphorus. Gammaproteobacteria and Pantoea were found to be the most abundant class (63-76%) and genus (38-48%) in the phyllosphere and endosphere, respectively. E-O3 significantly increased the relative abundance of Bacteroidetes in the phyllosphere bacterial community and decreased the relative abundance of Gammaproteobacteria in the endophytic community. In conclusion, elevated O3 increased the diversity of bacterial communities of leaf phyllosphere and endosphere, and leaf chemical properties had a more pronounced effect on the endosphere bacterial community.
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Affiliation(s)
- Qi Wang
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Yuanyuan Liu
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Yi Su
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Cheng Cheng
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Bo Shang
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Evgenios Agathokleous
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Zhaozhong Feng
- School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
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14
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Cui X, He H, Zhu F, Liu X, Ma Y, Xie W, Meng H, Zhang L. Community structure and co-occurrence network analysis of bacteria and fungi in wheat fields vs fruit orchards. Arch Microbiol 2022; 204:453. [PMID: 35786781 DOI: 10.1007/s00203-022-03074-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 06/07/2022] [Accepted: 06/13/2022] [Indexed: 11/26/2022]
Abstract
Soil microorganisms play a vital role in biogeochemical processes and nutrient turnover in agricultural ecosystems. However, the information on how the structure and co-occurrence patterns of microbial communities response to the change of planting methods is still limited. In this study, a total of 34 soil samples were collected from 17 different fields of 2 planting types (wheat and orchards) along the Taige Canal in Yangtze River Delta. The structure of bacterial and fungal communities in soil were determined by 16S rRNA gene and ITS gene, respectively. The dominated bacteria were Proteobacteria, Acidobacteriota, Actinobacteriota, Chloroflexi, Bacteroidota, and Firmicutes. The relative abundances of Actinobacteriota and Firmicutes were higher in the orchards, while Chloroflexi and Nitrospirota were more abundant in wheat fields. Ascomycota, Mortierellomycota, and Basidiomycota were the predominant fungus in both soil types. Diversity of bacterial and fungal communities were greater in the wheat fields than in orchards. Statistical analyses showed that pH was the main factor shaping the community structure, and parameters of water content (WC), total organic carbon (TOC) and total nitrogen (TN) had great influences on community structure. Moreover, high co-occurrence patterns of bacterial and fungal were confirmed in both wheat fields and orchards. Network analyses showed that both wheat fields and orchards occurred modular structure, including nodes of Acidobacteriota, Chloroflexi, Gemmatimonadota, Nitrospirota and Ascomycota. In summary, our work showed the co-occurrence network and the convergence/divergence of microbial community structure in wheat fields and orchards, giving a comprehensive understanding of the microbe-microbe interaction during planting methods' changes.
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Affiliation(s)
- Xinyu Cui
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Huan He
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Fengxiao Zhu
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Xiaobo Liu
- Environmental Science and Engineering Research Group, Guangdong Technion-Israel Institute of Technology (GTIIT), Shantou, 515063, Guangdong, People's Republic of China
| | - You Ma
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Wenming Xie
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China
| | - Han Meng
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China.
| | - Limin Zhang
- School of Environment, Nanjing Normal University, Nanjing, 210023, People's Republic of China
- Green Economy Development Institute, Nanjing University of Finance and Economics, Nanjing, 210023, People's Republic of China
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15
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Wu Q, Jiang X, Wu H, Zou L, Wang L, Shi J. Effects and Mechanisms of Copper Oxide Nanoparticles with Regard to Arsenic Availability in Soil-Rice Systems: Adsorption Behavior and Microbial Response. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:8142-8154. [PMID: 35654440 DOI: 10.1021/acs.est.2c01393] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Copper oxide nanoparticles (CuO NPs) are widely used as fungicides in agriculture. Arsenic (As) is a ubiquitous contaminant in paddy soil. The present study was focused on the adsorption behavior of CuO NPs with regard to As as well as the characteristics of the microbial community changes in As-contaminated soil-rice systems in response to CuO NPs. The study found that CuO NPs could be a temporary sink of As in soil; a high dose of CuO NPs promoted the release of As from crystalline iron oxide, which increased the As content in the liquid phase. The study also found that the As bioavailability changed significantly when the dose of CuO NPs was higher than 50 mg kg-1 in the soil-rice system. The addition of 100 mg kg-1 CuO NPs increased the microbial diversity and the abundance of genes involved in As cycling, decreased the abundance of Fe(III)-reducing bacteria and sulfate-reducing genes, and decreased As accumulation in grains. Treatment with 500 mg kg-1 CuO NPs increased the abundance of Fe(III)-reducing bacteria and sulfate-reducing genes, decreased Fe plaques, and increased As accumulation in rice. The adverse effects of CuO NPs on crops and associated risks need to be considered carefully.
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Affiliation(s)
- Qianhua Wu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang University, Hangzhou 310058, China
| | - Xiaohan Jiang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang University, Hangzhou 310058, China
| | - Hanxin Wu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang University, Hangzhou 310058, China
| | - Lina Zou
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang University, Hangzhou 310058, China
| | - Lubin Wang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang University, Hangzhou 310058, China
| | - Jiyan Shi
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Water Pollution Control and Environmental Safety, Zhejiang University, Hangzhou 310058, China
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16
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Tao S, Zhang Y, Tian C, Duplessis S, Zhang N. Elevated Ozone Concentration and Nitrogen Addition Increase Poplar Rust Severity by Shifting the Phyllosphere Microbial Community. J Fungi (Basel) 2022; 8:jof8050523. [PMID: 35628778 PMCID: PMC9148057 DOI: 10.3390/jof8050523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 12/04/2022] Open
Abstract
Tropospheric ozone and nitrogen deposition are two major environmental pollutants. A great deal of research has focused on the negative impacts of elevated O3 and the complementary effect of soil N addition on the physiological properties of trees. However, it has been overlooked how elevated O3 and N addition affect tree immunity in face of pathogen infection, as well as of the important roles of phyllosphere microbiome community in host–pathogen–environment interplay. Here, we examined the effects of elevated O3 and soil N addition on poplar leaf rust [Melampsora larici-populina] severity of two susceptible hybrid poplars [clone ‘107’: Populus euramericana cv. ‘74/76’; clone ‘546’: P. deltoides Í P. cathayana] in Free-Air-Controlled-Environment plots, in addition, the link between Mlp-susceptibility and changes in microbial community was determined using Miseq amplicon sequencing. Rust severity of clone ‘107’ significantly increased under elevated O3 or N addition only; however, the negative impact of elevated O3 could be significantly mitigated when accompanied by N addition, likewise, this trade-off was reflected in its phyllosphere microbial α-diversity responding to elevated O3 and N addition. However, rust severity of clone ‘546’ did not differ significantly in the cases of elevated O3 and N addition. Mlp infection altered microbial community composition and increased its sensitivity to elevated O3, as determined by the markedly different abundance of taxa. Elevated O3 and N addition reduced the complexity of microbial community, which may explain the increased severity of poplar rust. These findings suggest that poplars require a changing phyllosphere microbial associations to optimize plant immunity in response to environmental changes.
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Affiliation(s)
- Siqi Tao
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
| | - Yunxia Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
| | - Chengming Tian
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
| | | | - Naili Zhang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China; (S.T.); (Y.Z.); (C.T.)
- Correspondence:
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17
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Zhao Y, Yao Y, Xu H, Xie Z, Guo J, Qi Z, Jiang H. Soil metabolomics and bacterial functional traits revealed the responses of rhizosphere soil bacterial community to long-term continuous cropping of Tibetan barley. PeerJ 2022; 10:e13254. [PMID: 35415021 PMCID: PMC8995024 DOI: 10.7717/peerj.13254] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/22/2022] [Indexed: 01/13/2023] Open
Abstract
Continuous cropping often leads to an unbalanced soil microbial community, which in turn negatively affects soil functions. However, systematic research of how these effects impact the bacterial composition, microbial functional traits, and soil metabolites is lacking. In the present study, the rhizosphere soil samples of Tibetan barley continuously monocropped for 2 (CCY02), 5 (CCY05), and 10 (CCY10) years were collected. By utilizing 16S high-throughput sequencing, untargeted metabolomes, and quantitative microbial element cycling smart chips, we examined the bacterial community structure, soil metabolites, and bacterial functional gene abundances, respectively. We found that bacterial richness (based on Chao1 and Phylogenetic Diversity [PD] indices) was significantly higher in CCY02 and CCY10 than in CCY05. As per principal component analysis (PCA), samples from the continuous monocropping year tended to share more similar species compositions and soil metabolites, and exhibited distinct patterns over time. The results of the Procrustes analysis indicated that alterations in the soil metabolic profiles and bacterial functional genes after long-term continuous cropping were mainly mediated by soil microbial communities (P < 0.05). Moreover, 14 genera mainly contributed to the sample dissimilarities. Of these, five genera were identified as the dominant shared taxa, including Blastococcus, Nocardioides, Sphingomonas, Bacillus, and Solirubrobacter. The continuous cropping of Tibetan barley significantly increased the abundances of genes related to C-degradation (F = 9.25, P = 0.01) and P-cycling (F = 5.35, P = 0.03). N-cycling significantly negatively correlated with bacterial diversity (r = - 0.71, P = 0.01). The co-occurrence network analysis revealed that nine hub genera correlated with most of the functional genes and a hub taxon, Desulfuromonadales, mainly co-occurred with the metabolites via both negative and positive correlations. Collectively, our findings indicated that continuous cropping significantly altered the bacterial community structure, functioning of rhizosphere soils, and soil metabolites, thereby providing a comprehensive understanding of the effects of the long-term continuous cropping of Tibetan barley.
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Affiliation(s)
- Yuan Zhao
- Qinghai University, College of Eco-Environmental Engineering, Xining, Qinghai, China
| | - Youhua Yao
- Qinghai University, Academy of Agriculture and Forestry Sciences, Xining, Qinghai, China
| | - Hongyan Xu
- Qinghai University, College of Eco-Environmental Engineering, Xining, Qinghai, China,Qinghai University, Academy of Agriculture and Forestry Sciences, Xining, Qinghai, China
| | - Zhanling Xie
- Qinghai University, College of Eco-Environmental Engineering, Xining, Qinghai, China
| | - Jing Guo
- Qinghai University, College of Eco-Environmental Engineering, Xining, Qinghai, China
| | - Zhifan Qi
- Qinghai University, College of Eco-Environmental Engineering, Xining, Qinghai, China
| | - Hongchen Jiang
- China University of Geosciences, State Key Laboratory of Biogeology and Environmental Geology, Wuhan, Hubei, China
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Díaz-López M, Siles JA, Ros C, Bastida F, Nicolás E. The effects of ozone treatments on the agro-physiological parameters of tomato plants and the soil microbial community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:151429. [PMID: 34742984 DOI: 10.1016/j.scitotenv.2021.151429] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/01/2021] [Accepted: 10/31/2021] [Indexed: 06/13/2023]
Abstract
Ozone has been applied in many processes (drinking water disinfection and wastewater treatment, among others) based on its high degree of effectiveness as a wide-spectrum disinfectant and its potential for the degradation of pollutants and pesticides. Nevertheless, the effects of irrigation with ozonated water on the soil microbial community and plant physiology and productivity at the field scale are largely unknown. Here, we assessed the impact of irrigation with ozonated water on the microbial community of a Mediterranean soil and on Solanum lycopersicum L. agro-physiology and productivity in a greenhouse experiment. For this purpose, we evaluated: i) soil physicochemical properties, soil enzyme activities, and the biomass (through analysis of microbial fatty acids) and diversity (through 16S rRNA gene and ITS2 amplicon sequencing) of the soil microbial community, and ii) the nutrient content, physiology, yield, and fruit quality of tomato plants. Overall, the soil physicochemical properties were slightly affected by the treatments applied, showing some differences between continuous and intermittent irrigation with ozonated water. Only the soil pH was significantly reduced by continuous irrigation with ozonated water at the end of the assay. Biochemical parameters (enzymatic activities) showed no significant differences between the treatments studied. The biomasses of Gram- bacteria and fungi were decreased by intermittent and continuous irrigation with ozonated water, respectively. However, the diversity, structure, and composition of the soil microbial community were not affected by the ozone treatments. Changes in soil properties slightly affected tomato plant physiology but did not affect yield or fruit quality. The stomatal conductance was reduced and the intrinsic water use efficiency was increased by continuous irrigation with ozonated water. Our results suggest that soil health and fertility were not compromised, however ozonated water treatments should be tailored to individual crop conditions to avoid adverse effects.
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Affiliation(s)
- Marta Díaz-López
- Department of Irrigation, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia 30100, Spain; Department of Soil and Water Conservation and Waste Management, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia 30100, Spain.
| | - José A Siles
- Department of Soil and Water Conservation and Waste Management, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia 30100, Spain
| | - Caridad Ros
- Department of Crop Protection, Murcia Institute of Agri-Food Research and Development, IMIDA, C/Mayor s/n, Murcia 30150, Spain
| | - Felipe Bastida
- Department of Soil and Water Conservation and Waste Management, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia 30100, Spain
| | - Emilio Nicolás
- Department of Irrigation, CEBAS-CSIC, Campus Universitario de Espinardo, Murcia 30100, Spain
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19
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Zhao Y, Duan FA, Cui Z, Hong J, Ni SQ. Insights into the vertical distribution of the microbiota in steel plant soils with potentially toxic elements and PAHs contamination after 60 years operation: Abundance, structure, co-occurrence network and functionality. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 786:147338. [PMID: 33971607 DOI: 10.1016/j.scitotenv.2021.147338] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/18/2021] [Accepted: 04/20/2021] [Indexed: 05/14/2023]
Abstract
Both potentially toxic elements (PTEs) and polycyclic aromatic hydrocarbons (PAHs) are widely present in soil contaminated by steel industries. This study assessed the vertical variation (at 20 cm, 40 cm, 60 cm, 80 cm, 120 cm, and 150 cm depth) of bacterial abundance, community structure, functional genes related to PAHs degradation, and community co-occurrence patterns in an old steel plant soils which contaminated by PTEs and PAHs for 60 years. The excessive PAHs and PTEs in steel plant soils were benzo (a) pyrene, benzo (b) fluoranthene, dibenzo (a, h) anthracene, indeno (1,2,3-c, d) pyrene, and lead (Pb). The abundance and composition of bacterial community considerably changed with soil depth in two study areas with different pollution degrees. The results of co-occurrence network analysis indicated that the top genera in blast furnace zone identified as the potential keystone taxa were Haliangium, Blastococcus, Nitrospira, and Sulfurifustis. And in coking zone, the top genera were Gaiella. The predictions of bacterial metabolism function using PICRUSt showed that the PAHs-PTEs contaminated soil still had the potential for PAHs degradation, but most PTEs negatively correlated with PAHs degradation genes. The total sulfur (TS), acenaphthene (ANA), and Zinc (Zn) were the key factors to drive development of bacterial communities in the steel plant soils. As far as we know, this is the first investigation of vertical distribution and interaction of the bacterial microbiota in the aging soils of steel plant contaminated with PTEs and PAHs.
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Affiliation(s)
- Yiyi Zhao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China; Suzhou Research Institute, Shandong University, Suzhou, Jiangsu 215123, China
| | - Fu-Ang Duan
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China
| | - Zhaojie Cui
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China
| | - Jinglan Hong
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China
| | - Shou-Qing Ni
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong 266237, China; Suzhou Research Institute, Shandong University, Suzhou, Jiangsu 215123, China.
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Wang Q, Cheng C, Agathokleous E, Liu Y, Li X, Sheng X. Enhanced diversity and rock-weathering potential of bacterial communities inhabiting potash trachyte surface beneath mosses and lichens - A case study in Nanjing, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 785:147357. [PMID: 33957590 DOI: 10.1016/j.scitotenv.2021.147357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/20/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Mosses and lichens have been shown to play an important role in enhancing global chemical weathering of the surface rock. However, there are no studies concerning the effects of mosses and lichens on the microbial communities inhabiting rock surfaces. In this study, culture-dependent and culture-independent analyses were employed to compare the diversity, composition, and rock-weathering activity of bacterial communities inhabiting potash trachyte surfaces covered by mosses (MR) and lichens (LR) with those inhabiting surrounding bare rock surfaces (BR). Analyses of 16S rRNA gene Miseq sequencing revealed that the order of alpha (α) diversity indices, in terms of the number of unique operational taxonomic units (OTUs) and Faith's index of phylogenetic diversity, was MR > LR > BR. Moreover, α-diveristy indices were positively correlated with the content of available phosphorus (AP) in rock samples (r = 0.87-0.92), and this explained 70% of the variation in bacterial community structure. The culture-dependent analyses revealed that 100% of the culturable bacterial strains could enhance potash trachyte weathering, and the order of rock-weathering acitivity of bacterial strains was MR > LR > BR. Acidolysis was found to be the major mechanism involved in the bacteria-mediated weathering of potash trachyte. Moreover, bacterial strians related to the genera Dyella and Ralstonia showed the highest rock-weatheirng activity, and both Dyella and Ralstonia were enriched in MR. The results of this study enhance our understanding of the roles of bacteria facilitated by mosses and lichens in rock weathering, element cycling, and soil formation, and provide new insights into the interaction between non-vascular plants and the bacteria on rock surfaces.
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Affiliation(s)
- Qi Wang
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, PR China.
| | - Cheng Cheng
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, PR China
| | - Evgenios Agathokleous
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, PR China
| | - Yuanyuan Liu
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, PR China
| | - Xuewei Li
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, PR China
| | - Xiafang Sheng
- Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Science, Nanjing Agricultural University, Nanjing 210095, PR China
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