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Zang Z, Li Y, Wang Y, Zhang Y, Deng S, Guo X, Yang K, Zhao W. Contrasting roles of plant, bacterial, and fungal diversity in soil organic carbon accrual during ecosystem restoration: A meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172767. [PMID: 38670358 DOI: 10.1016/j.scitotenv.2024.172767] [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: 02/03/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Plant and microbial diversity plays vital roles in soil organic carbon (SOC) accumulation during ecosystem restoration. However, how soil microbial diversity mediates the positive effects of plant diversity on carbon accumulation during vegetation restoration remains unclear. We conducted a large-scale meta-analysis with 353 paired observations from 65 studies to examine how plant and microbial diversity changed over 0-160 years of natural restoration and its connection to SOC accrual in the topsoil (0-10 cm). Results showed that natural restoration significantly increased plant aboveground biomass (122.09 %), belowground biomass (153.05 %), and richness (21.99 %) and SOC accumulation (32.34 %) but had no significant impact on microbial diversity. Over time, bacterial and fungal richness increased and then decreased. The responses of major microbial phyla, in terms of relative abundance, varied across restoration and ecosystem types. Specifically, Ascomycota and Zygomycota decreased more under farmland abandonment than under grazing exclusion. In forest, Bacteroidetes, Ascomycota, and Zygomycota significantly decreased after natural restoration. The increase in SOC and Basidiomycota was higher in forest than in grassland. Based on standardized estimates, structural equation modeling showed that plant diversity had the highest positive effect (0.55) on SOC accrual, and while fungal diversity (0.15) also had a positive effective, bacterial diversity (-0.20) had a negative effect. Plant diversity promoted SOC accumulation by directly impacting biomass and soil moisture and total nitrogen and indirectly influencing soil microbial richness. This meta-analysis highlights the significant roles of plant diversity and microbial diversity in carbon accumulation during natural restoration and elucidates their relative contributions to carbon accumulation, thereby aiding in more precise predictions of soil carbon sequestration.
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Affiliation(s)
- Zhenfeng Zang
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yingxue Li
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China; Comprehensive Security Center of Hohhot Forestry and Grassland Bureau, Hohhot, Inner Mongolia 010010, China
| | - Yinan Wang
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yu Zhang
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shujuan Deng
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinyu Guo
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ke Yang
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
| | - Wei Zhao
- College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Soil Erosion and Dryland Farming on the 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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Gao Q, Lu X, Li J, Wang P, Li M. Impact of microplastics on nicosulfuron accumulation and bacteria community in soil-earthworms system. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133414. [PMID: 38181595 DOI: 10.1016/j.jhazmat.2023.133414] [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: 10/31/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 01/07/2024]
Abstract
Microplastics (MPs) widely co-occur with various pollutants in soils. However, the data related to the impacts of MPs on terrestrial animal and microbial properties in pesticide-contaminated soils are few. In this study, the influence of MPs (0.01%, 0.1%, and 1%) on nicosulfuron concentrations in soil (10 µg/g) and earthworms were investigated, moreover, microbial community structure and diversity in soil and earthworm gut were also measured. After 30 days, the concentration of nicosulfuron in soil decreased to 1.27 µg/g, moreover, the residual concentration of nicosulfuron in soil (1%MPs and nicosulfuron) was only 44.8% of that in the single nicosulfuron treatment group. The accumulation of nicosulfuron in earthworms (1%MPs and nicosulfuron) was 7.37 µg/g, which was 1.82 times of that in the single nicosulfuron treatment group. In addition, 1% MPs decreased the richness and diversity of the soil and gut bacterial community in earthworms as well as altered microbial community composition, leading to the enrichment of specific microbial community. Our findings imply that MPs may change the migration of pesticides to terrestrial animal and as well as microbial diversity in earthworms and soil.
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Affiliation(s)
- Qingchuan Gao
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Xiaohui Lu
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Jinfeng Li
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Ping Wang
- College of Forestry, Northeast Forestry University, Harbin 150040, China
| | - Ming Li
- College of Forestry, Northeast Forestry University, Harbin 150040, China.
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Shu X, Hu Y, Liu W, Xia L, Zhang Y, Zhou W, Liu W, Zhang Y. Linking between soil properties, bacterial communities, enzyme activities, and soil organic carbon mineralization under ecological restoration in an alpine degraded grassland. Front Microbiol 2023; 14:1131836. [PMID: 37180269 PMCID: PMC10167489 DOI: 10.3389/fmicb.2023.1131836] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 03/17/2023] [Indexed: 04/08/2023] Open
Abstract
Soil organic carbon (SOC) mineralization is affected by ecological restoration and plays an important role in the soil C cycle. However, the mechanism of ecological restoration on SOC mineralization remains unclear. Here, we collected soils from the degraded grassland that have undergone 14 years of ecological restoration by planting shrubs with Salix cupularis alone (SA) and, planting shrubs with Salix cupularis plus planting mixed grasses (SG), with the extremely degraded grassland underwent natural restoration as control (CK). We aimed to investigate the effect of ecological restoration on SOC mineralization at different soil depths, and to address the relative importance of biotic and abiotic drivers of SOC mineralization. Our results documented the statistically significant impacts of restoration mode and its interaction with soil depth on SOC mineralization. Compared with CK, the SA and SG increased the cumulative SOC mineralization but decreased C mineralization efficiency at the 0-20 and 20-40 cm soil depths. Random Forest analyses showed that soil depth, microbial biomass C (MBC), hot-water extractable organic C (HWEOC), and bacterial community composition were important indicators that predicted SOC mineralization. Structural equal modeling indicated that MBC, SOC, and C-cycling enzymes had positive effects on SOC mineralization. Bacterial community composition regulated SOC mineralization via controlling microbial biomass production and C-cycling enzyme activities. Overall, our study provides insights into soil biotic and abiotic factors in association with SOC mineralization, and contributes to understanding the effect and mechanism of ecological restoration on SOC mineralization in a degraded grassland in an alpine region.
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Affiliation(s)
- Xiangyang Shu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Yufu Hu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Weijia Liu
- College of Resources, Sichuan Agricultural University, Chengdu, China
- Chengdu Academy of Agriculture and Forestry Sciences, Chengdu, China
| | - Longlong Xia
- Institute for Meteorology and Climate Research (IMK-IFU), Karlsruhe Institute of Technology, Karlsruhe, Baden-Wurttemberg, Germany
| | - Yanyan Zhang
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Wei Zhou
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Wanling Liu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Yulin Zhang
- Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
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Zhu R, Liu C, Xu YD, He W, Liu J, Chen J, An Y, Shi S. Ratio of carbon and nitrogen in fertilizer treatment drives distinct rhizosphere microbial community composition and co-occurrence networks. Front Microbiol 2022; 13:968551. [PMID: 36160210 PMCID: PMC9493311 DOI: 10.3389/fmicb.2022.968551] [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: 06/14/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022] Open
Abstract
Fertilization is the main strategy to accelerate vegetation restoration and improve the rhizosphere microbial community in the northeast China. However, the responses of rhizosphere microbial community structure, specific microbial community and symbiotic pattern to manure fertilization in grassland (alfalfa only) are not well clear. In this study, the variation of bacterial community structures in R_Manure (extracted liquid of fermented cow manure), E_Manure (extracted residue of fermented cow manure), F_Manure (full fermented cow manure), and Control (without fermented cow manure) collected from the rhizosphere microbial community of alfalfa were analyzed by the application of an Illumina HiSeq high-throughput sequencing technique. A total of 62,862 microbial operational taxonomic units (OTUs) were detected and derived from 21 phyla of known bacteria. The dominant bacteria in the rhizosphere include Proteobacteria (70.20%), Acidobacteria (1.24%), Actinobacteria (2.11%), Bacteroidetes (6.15%), Firmicutes (4.21%), and Chlorofexi (2.13%) accounting for 86% of the dominant phyla in all treatments. At the genus level, the dominant genus include NB1-j, Lysobacter, Alphaproteobacteria, Subgroup_6, Actinomarinales, Saccharimonadales, Aneurinibacillus, MO-CFX2, SBR1031, Caldilineaceae, and so on with the average relative abundance (RA) of 1.76%, 1.52%, 1.30%, 1.24%, 1.61%, 2.39%, 1.36%, 1.42%, 1.27%, and 1.03%, respectively. Bacterial diversities and community structures were significantly differentiated by different treatments of fertilization. The results of community structure composition showed that R_Manure treatment significantly increased the population abundance of Firmicutes, Chlorofexi, and Patescibacteria by 34.32%, 6.85%, and 2.70%, and decreased the population abundance of Proteobacteria and Actinobacteria by 16.83% and 1.04%, respectively. In addition, it showed that all treatments significantly resulted in an increase or decrease at the genus level. R_Manure had the higher richness and diversity of the bacterial community, with the greatest topology attributes of the co-occurrence networks. Through the analysis of the molecular ecological network (MENA), the co-occurrence networks had a shorter average path distance and diameter in R_Manure than in others, implying more stability to environmental changes. Redundancy analysis (RDA) showed that the ratio of carbon and nitrogen (C/N) was the main factor affecting rhizosphere microbial community composition while driving distinct rhizosphere bacterial community and its co-occurrence networks. The R_Manure associated with more C/N had relatively complex microbial co-occurrence network with a large number of nodes and edges, while the microbial network of others associated with less C/N had fewer taxa with loose mutual interactions. These results suggested that organic fertilizer with high C/N can regulate the rhizosphere microorganism, while high C/N can determine bacterial community structures, specific bacterial taxa, and their relationships with the nodule size of alfalfa. These significant changes can be used to evaluate soil fertility and fertilizer management in the artificial grassland system, while the potential biological indicators of the rhizosphere microbial community will play an important role in future eco-agriculture.
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Affiliation(s)
- Ruifen Zhu
- Pratacultural College, Gansu Agricultural University, Lanzhou, China
- Pratacultural Institute, Chongqing Academy of Animal Sciences, Rongchang, China
- Pratacultural Institute Science, Heilongjiang Academy of Agricultural Sciences, Harbin, China
| | - Chang Liu
- Pratacultural Institute, Chongqing Academy of Animal Sciences, Rongchang, China
| | - Yuan Dong Xu
- Pratacultural Institute, Chongqing Academy of Animal Sciences, Rongchang, China
| | - Wei He
- Pratacultural Institute, Chongqing Academy of Animal Sciences, Rongchang, China
| | - Jielin Liu
- Pratacultural Institute Science, Heilongjiang Academy of Agricultural Sciences, Harbin, China
| | - Jishan Chen
- Pratacultural Institute, Chongqing Academy of Animal Sciences, Rongchang, China
| | - Yajun An
- Gansu Yasheng Agricultural Research Institute Co., Ltd., Lanzhou, China
| | - Shangli Shi
- Pratacultural College, Gansu Agricultural University, Lanzhou, China
- *Correspondence: Shangli Shi
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Huang L, Li Z, Wang G, Han J, Hou Y, Zhang N. Composite hydrolytic acidification - aerobic MBBR process for treating traditional Chinese medicine wastewater. Biodegradation 2022; 33:509-528. [PMID: 35948760 DOI: 10.1007/s10532-022-09995-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 08/05/2022] [Indexed: 11/27/2022]
Abstract
Traditional Chinese medicine (TCM) wastewater is characterized by high organic content, unstable water quality and quantity and low biodegradability. In this paper, the hydrolytic acidification reactor-aerobic moving bed biofilm (MBBR) process was used to degrade TCM wastewater. Besides, a small pilot study was conducted. The appropriate operating parameters: hydraulic retention time (HRT) of the hydrolytic reactor was 16 h, HRT of MBBR was 30 h, dissolved oxygen of MBBR was 6 mg/L, sludge return ratio of MBBR was 100%. The hydrolytic reactor was started for 25 days. MBBR was run in series with the hydrolytic reactor after 24 days of separate operation. The start-up of the composite reactor was completed after another 26 days. The average removal efficiencies of chemical oxygen demand and ammonia nitrogen were 92% and 70%. The hydrolytic reactor was effective in decomposing macromolecules and MBBR had a strong ability to degrade pollutants through the excitation-emission-matrix spectra. The evolution pattern of the dominant bacterial genera and the surface morphology of sludge were studied by scanning electron microscopy and high-throughput sequencing analysis. It could be seen that the surface morphology of the biological filler was suitable for the growth and reproduction of microorganisms.
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Affiliation(s)
- Likun Huang
- School of Food Engineering, Harbin University of Commerce, Harbin, 150028, China
| | - Zhe Li
- School of Food Engineering, Harbin University of Commerce, Harbin, 150028, China
| | - Guangzhi Wang
- School of Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China.
| | - Jingfu Han
- School of Food Engineering, Harbin University of Commerce, Harbin, 150028, China
| | - Yue Hou
- School of Food Engineering, Harbin University of Commerce, Harbin, 150028, China
| | - Ning Zhang
- School of Environment, Harbin Institute of Technology, 73 Huanghe Road, Harbin, 150090, China
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Sun J, Zhao J, Zhang T, Yu L, Jin K. Effects of a Furrow-Bed Seeding System on Stand Establishment, Soil Bacterial Diversity, and the Yield and Quality of Alfalfa Under Saline Condition. FRONTIERS IN PLANT SCIENCE 2022; 13:919912. [PMID: 35755687 PMCID: PMC9225151 DOI: 10.3389/fpls.2022.919912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Salt stress account for large decreases in crop yield all over the world. Furrow-bed system is an efficient practice to promote plant growth in saline soil. However, the effects of Furrow-bed system on the soil environment and the growth of alfalfa (Medicago sativa L.) in salinity are not clear. For a wider and more detail evaluation, alfalfa were planted in saline sandy loam soil in fall, the effects of two plant systems (FU, furrow-bed seeding system; FL, flat-bed seeding system) on soil moisture, root zone salinity, soil microbial community structure, seedling emergence number in the early stage of the growth period and soil nutrient contents, alfalfa production characteristics in the second growth year were determined in a 2-year field experiment. The result showed that, compared with FL, FU resulted in increased soil moisture content and seedling emergence, and significantly reduced relative abundance of Actinobacteria and Choroflexi in soil, but it did not affect root zone salinity at the seedling stage. In April of second growth year, the soil salinity was lower, and the soil available phosphorus, potassium, nitrogen, and soil organic matter contents of the root zone were higher in FU than in FL. Compared with FL, FU resulted in increased yield (by 37.5%), protein content (by 3.6%), and potassium concentration (by 33.2%), and decreased ash content (by 7.7%), and sodium concentration (by 19.0%) in alfalfa plants. Pearson's correlation analysis indicated that the increased yield was positively correlated with seedling emergence, soil available potassium, total nitrogen, and organic matter contents, and shoot potassium content and negatively correlated with shoot sodium content. The relative abundance of Actinobacteria was negatively correlated with alfalfa ash, calcium, and sodium concentrations, and positively correlated with shoot potassium content. Taken together, the results indicate that Furrow-bed seeding in early fall alleviated salt stress of alfalfa and have the potential to enhance the yield and quality of alfalfa cultivated in saline soils by improving the soil environment and regulating the growth and physiology of alfalfa. Graphical Abstract.
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Affiliation(s)
- Juanjuan Sun
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, China
- Inner Mongolia Academy of Grassland Science, Hohhot, China
| | - Jinmei Zhao
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, China
- Inner Mongolia Academy of Grassland Science, Hohhot, China
| | - Tengwei Zhang
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, China
- Inner Mongolia Academy of Grassland Science, Hohhot, China
| | - Linqing Yu
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, China
| | - Ke Jin
- Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot, China
- Inner Mongolia Academy of Grassland Science, Hohhot, China
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An F, Niu Z, Liu T, Su Y. Succession of soil bacterial community along a 46-year choronsequence artificial revegetation in an arid oasis-desert ecotone. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 814:152496. [PMID: 34968610 DOI: 10.1016/j.scitotenv.2021.152496] [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: 08/08/2021] [Revised: 12/12/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
How the bacterial community structure and potential metabolic functions will change after revegetation in arid desert ecosystems is still unknown. We used high-throughput pyrosequencing to explore changes in soil bacterial diversity, structure and metabolic pathways, and the key driving factors along a chronosequence of 46-year Haloxylon ammodendron revegetation in an oasis-desert ecotone in the northwestern China. Our results indicated that establishment of H. ammodendron on shifting sand dunes significantly changed the structure of bacterial communities and increased their diversity and richness. The main dominant phyla were Actinobacteria (32.1-41.3%) and Proteobacteria (19.2-27.0%); in that, α-Proteobacteria (16.4-20.7%) were the most abundant Proteobacteria. Kocuria coexisted at different succession stage after year 0, and their relative abundance ranged from 3.8-9.0%. Principal coordinates analysis (PCoA) showed that bacterial community from the same revegetation site grouped together and generally separated from each other, indicating that significant shifts in bacterial community structure occurred after revegetation. LEfSe analysis identified unique biomarkers in the soil samples from seven sites. Moreover, PICRUSt analysis indicated similar overall patterns of metabolic pathways in different succession stage. Redundancy analysis (RDA) showed that total carbon, pH and total phosphorus were major abiotic factors driving the structure of bacterial communities, which explained 57.5% of the variation in bacterial communities. Our findings advance the current understanding of plant-soil interactions in the processes of ecological restoration and desertification reversal.
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Affiliation(s)
- Fangjiao An
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ziru Niu
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tingna Liu
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongzhong Su
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
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Characterization of Acidic Tea Polysaccharides from Yellow Leaves of Wuyi Rock Tea and Their Hypoglycemic Activity via Intestinal Flora Regulation in Rats. Foods 2022; 11:foods11040617. [PMID: 35206093 PMCID: PMC8871580 DOI: 10.3390/foods11040617] [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: 01/23/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 02/05/2023] Open
Abstract
A bioactive acidic tea polysaccharide from yellow leaves of Wuyi rock tea was successively prepared via DEAE-52 and Superdex-200 columns. Nuclear magnetic resonance (NMR) analysis showed that the main glycosidic bonds were composed of α-l-Araf-(1→, →5)-α-l-Araf-(1→, →4)-α-d-Glcp-(1→, Arap-(1→, →6)-α-d-Glcp-(1→, →2,4)-α-l-Rhap-(1→, →3,4)-α-d-Glcp-(1→, →4)-α-d-GalAp-(1→, →4)-α-d-GalAp-(1→, α-d-Galp-(1→, →6)-β-d-Galp-(1→ and →4)-β-d-Galp-(1→. The molecular weight was 3.9285 × 104 Da. The hypoglycemic effect of acidic tea polysaccharides on streptozotocin-induced type 2 diabetes mellitus rats was evaluated through histopathology and biochemistry analysis. The acidic tea polysaccharide could improve plasma and liver lipid metabolism. Moreover, 16S rRNA gene sequencing revealed that the composition of the intestinal flora changed drastically after treatment, namely, blooms of Bifidobacterium, Blautia, Dorea, and Oscillospira, and a strong reduction in Desulfovibrio and Lactobacillus. The above results illustrated that tea polysaccharides might serve as an effective ingredient to ameliorate glucose metabolism disorders and intestinal flora in hyperglycemic rats.
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Chang Y, Chen F, Zhu Y, You Y, Cheng Y, Ma J. Influence of revegetation on soil microbial community and its assembly process in the open-pit mining area of the Loess Plateau, China. Front Microbiol 2022; 13:992816. [PMID: 36090080 PMCID: PMC9453671 DOI: 10.3389/fmicb.2022.992816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 11/15/2022] Open
Abstract
Vegetation recovery is an important marker of ecosystem health in the mining area. Clarifying the influence of vegetation recovery on the characteristics of soil microbial community and its assembly process can improve our understanding of the ecological resilience and self-maintaining mechanism in the open-pit mining area. For this purpose, we employed MiSeq high-throughput sequencing coupled with null model analysis to determine the composition, molecular ecological network characteristics, key bacterial and fungal clusters, and the assembly mechanism of the soil microbial communities in shrubs (BL), coniferous forest (CF), broad-leaved forests (BF), mixed forest (MF), and the control plot (CK, the poplar plantation nearby that had been continuously grown for over 30 a without disturbance). The results showed that the vegetation restoration model had a significant influence on the α-diversity of the microbial community (p < 0.05). Compared with CK, Sobs and Shannon index of MF and CF have increased by 35.29, 3.50, and 25.18%, 1.05%, respectively, whereas there was no significant difference in the α-diversity of fungal community among different vegetation restoration types, Actinobacteria, Chloroflexi, Proteobacteria, and Acidobacteria were the dominant phyla. The diversity of the first two phyla was significantly higher than those of CK. However, the diversity of the last two phyla was dramatically lower than those of CK (p < 0.05). Ascomycota and Basidiomycota were dominant phyla in the fungal community. The abundance and diversity of Ascomycota were significantly higher than those of CK, while the abundance and diversity of the latter were considerably lower than those of CK (p < 0.05). The stochastic process governed the assembly of the soil microbial community, and the contribution rate to the bacterial community construction of CK, CF, BF, and MF was 100.0%. Except for MF, where the soil fungal community assembly was governed by the deterministic process, all other fungal communities were governed by the stochastic process. Proteobacteria and Acidobacteria are key taxa of the bacterial network, while Mortierellales, Thelebolales, Chaetothyriales, and Hypocreales are the key taxa of the fungal network. All these results might provide the theoretical foundation for restoring the fragile ecosystem in the global mining region.
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Affiliation(s)
- Yuanyuan Chang
- School of Public Policy and Management, China University of Mining and Technology, Xuzhou, China
| | - Fu Chen
- School of Public Policy and Management, China University of Mining and Technology, Xuzhou, China
- School of Public Administration, Hohai University, Nanjing, China
- *Correspondence: Fu Chen,
| | - Yanfeng Zhu
- School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, China
- Engineering Research Center of Ministry of Education for Mine Ecological Restoration, Xuzhou, China
| | - Yunnan You
- School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, China
| | - Yanjun Cheng
- School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou, China
| | - Jing Ma
- School of Public Administration, Hohai University, Nanjing, China
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Novoa A, Foxcroft LC, Keet JH, Pyšek P, Le Roux JJ. The invasive cactus Opuntia stricta creates fertility islands in African savannas and benefits from those created by native trees. Sci Rep 2021; 11:20748. [PMID: 34675315 PMCID: PMC8531129 DOI: 10.1038/s41598-021-99857-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/27/2021] [Indexed: 01/05/2023] Open
Abstract
The patchy distribution of trees typical of savannas often results in a discontinuous distribution of water, nutrient resources, and microbial communities in soil, commonly referred to as "islands of fertility". We assessed how this phenomenon may affect the establishment and impact of invasive plants, using the invasion of Opuntia stricta in South Africa's Kruger National Park as case study. We established uninvaded and O. stricta-invaded plots under the most common woody tree species in the study area (Vachellia nilotica subsp. kraussiana and Spirostachys africana) and in open patches with no tree cover. We then compared soil characteristics, diversity and composition of the soil bacterial communities, and germination performance of O. stricta and native trees between soils collected in each of the established plots. We found that the presence of native trees and invasive O. stricta increases soil water content and nutrients, and the abundance and diversity of bacterial communities, and alters soil bacterial composition. Moreover, the percentage and speed of germination of O. stricta were higher in soils conditioned by native trees compared to soils collected from open patches. Finally, while S. africana and V. nilotica trees appear to germinate equally well in invaded and uninvaded soils, O. stricta had lower and slower germination in invaded soils, suggesting the potential release of phytochemicals by O. stricta to avoid intraspecific competition. These results suggest that the presence of any tree or shrub in savanna ecosystems, regardless of origin (i.e. native or alien), can create favourable conditions for the establishment and growth of other plants.
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Affiliation(s)
- Ana Novoa
- grid.418095.10000 0001 1015 3316Department of Invasion Ecology, Institute of Botany, Czech Academy of Sciences, 252 43 Průhonice, Czech Republic ,grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.452736.10000 0001 2166 5237Invasive Species Programme, South African National Biodiversity Institute, Kirstenbosch Research Centre, Claremont, South Africa
| | - Llewellyn C. Foxcroft
- grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.463628.d0000 0000 9533 5073Scientific Services, South African National Parks, P/Bag X402, Skukuza, 1350 South Africa
| | - Jan-Hendrik Keet
- grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa
| | - Petr Pyšek
- grid.418095.10000 0001 1015 3316Department of Invasion Ecology, Institute of Botany, Czech Academy of Sciences, 252 43 Průhonice, Czech Republic ,grid.4491.80000 0004 1937 116XDepartment of Ecology, Faculty of Science, Charles University, Viničná 7, 128 44 Prague, Czech Republic
| | - Johannes J. Le Roux
- grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Centre for Invasion Biology, Stellenbosch University, Stellenbosch, South Africa ,grid.11956.3a0000 0001 2214 904XDepartment of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa ,grid.1004.50000 0001 2158 5405Department of Biological Sciences, Macquarie University, Sydney, NSW 2109 Australia
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11
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Huaraca-Meza F, Custodio M, Peñaloza R, Alvarado-Ibañez J, Paredes R, De la Cruz H, Arzapalo L, Lazarte-Pariona F. Bacterial diversity in high Andean grassland soils disturbed with Lepidium meyenii crops evaluated by metagenomics. BRAZ J BIOL 2021; 82:e240184. [PMID: 34133559 DOI: 10.1590/1519-6984.240184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 11/30/2020] [Indexed: 11/22/2022] Open
Abstract
Soil quality is usually determined by its physical-chemical characteristics without taking into account the bacterial communities that play a fundamental role in the chemical decomposition of plant nutrients. In this context, the objective of the study was to evaluate bacterial diversity in high Andean grassland soils disturbed with Lepidium meyenii cultivation under different gradients of use (first, second and third use) and crop development (pre-sowing, hypocotyl development and post-harvest). The sampling was carried out in the Bombón plateau in the central Andes of Peru, during the rainy and low water seasons, by the systematic method based on a specific pattern assigned in a geometric rectangular shape at a depth of 0 - 20 cm. The characterization of the bacterial communities was carried out through the metagenomic sequencing of the 16S rRNA. 376 families of bacteria were reported, of which it was determined that there was a significant change in bacterial composition and distribution in relation to use pressure. There were no major changes due to the development of Lepidium meyenii. The families most sensitive to use pressure and soil poverty indicators were Verrucomicrobiaceae, Acidobacteraceae and Aakkermansiaceae.
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Affiliation(s)
- F Huaraca-Meza
- Universidad Nacional del Centro del Perú, Centro de Investigación en Medicina de Altura y Medio Ambiente, Huancayo, Perú
| | - M Custodio
- Universidad Nacional del Centro del Perú, Centro de Investigación en Medicina de Altura y Medio Ambiente, Huancayo, Perú
| | - R Peñaloza
- Universidad Nacional del Centro del Perú, Centro de Investigación en Medicina de Altura y Medio Ambiente, Huancayo, Perú
| | - J Alvarado-Ibañez
- Universidad Nacional Intercultural "Fabiola Salazar Leguía" de Bagua, Bagua, Perú
| | - R Paredes
- Universidad Nacional del Centro del Perú, Centro de Investigación en Medicina de Altura y Medio Ambiente, Huancayo, Perú
| | - H De la Cruz
- Universidad Nacional del Centro del Perú, Centro de Investigación en Medicina de Altura y Medio Ambiente, Huancayo, Perú
| | - L Arzapalo
- Universidad Nacional del Centro del Perú, Centro de Investigación en Medicina de Altura y Medio Ambiente, Huancayo, Perú
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12
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Zhu R, Liu J, Wang J, Han W, Shen Z, Muraina TO, Chen J, Sun D. Comparison of soil microbial community between reseeding grassland and natural grassland in Songnen Meadow. Sci Rep 2020; 10:16884. [PMID: 33037306 PMCID: PMC7547709 DOI: 10.1038/s41598-020-74023-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 09/18/2020] [Indexed: 11/23/2022] Open
Abstract
Microorganisms have important ecological functions in ecosystems. Reseeding is considered as one of the main strategies for preventing grassland degradation in China. However, the response of soil microbial community and diversity to reseeding grassland (RG) and natural grassland (NG) remains unclear, especially in the Songnen Meadow. In this study, the soil microbial community compositions of two vegetation restoration types (RG vs NG) were analyzed using a high-throughput sequencing technique. A total of 23,142 microbial OTUs were detected, phylogenetically derived from 11 known bacterial phyla. Soil advantage categories included Proteobacteria, Acidobacteria, Actinobacteria, and Bacteroidetes, which together accounted for > 78% of the all phyla in vegetation restoration. The soil microbial diversity was higher in RG than in NG. Two types of vegetation restoration had significantly different characteristics of soil microbial community (P < 0.001). Based on a molecular ecological network analysis, we found that the network in RG had a longer average path distance and modularity than in NG network, making it more resilient to environment changes. Meanwhile, the results of the canonical correspondence analysis and molecular ecological network analysis showed that soil pH (6.34 ± 0.35 in RG and 7.26 ± 0.28 in NG) was the main factor affecting soil microbial community structure, followed by soil moisture (SM) in the Songnen meadow, China. Besides, soil microbial community characteristics can vary significantly in different vegetation restoration. Thus, we suggested that it was necessary and reasonable for this area to popularize reseeding grassland in the future.
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Affiliation(s)
- Ruifen Zhu
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China
| | - Jielin Liu
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China
| | - Jianli Wang
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China
| | - Weibo Han
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China
| | - Zhongbao Shen
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China
| | - Taofeek O Muraina
- National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 10008, China
- Department of Animal Health and Production, Oyo State College of Agriculture and Technology, P.M.B. 10, Igbo-Ora, Oyo State, Nigeria
| | - Jishan Chen
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China.
| | - Dequan Sun
- Institute of Pratacultural Science, Heilongjiang Academy of Agricultural Sciences, 368 Xue Fu Road, Nangang District, Harbin, 150086, China.
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13
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Distribution of Viable Bacteria in the Dust-Generating Natural Source Area of the Gobi Region, Mongolia. ATMOSPHERE 2020. [DOI: 10.3390/atmos11090893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Gobi Desert is a major source of dust events, whose frequency of occurrence and damage caused have recently significantly increased. In the present study, we investigated the types of live bacteria present in the surface soil of the Gobi Desert in Mongolia, and determined their genetic identification as well as their geographical distribution. During the survey, four different topographies (dry lake bed, wadi, well, and desert steppe) were selected, and land characteristics were monitored for moisture and temperature. The surface soil was aerobically cultured to isolate bacterial colonies, and their 16s rDNA regions were sequenced. The sequence data were identified through NCBI-BLAST analysis and generated phylogenetic trees. The results revealed two phyla and seven families of isolates from the sample points. Each isolate was characterized by their corresponding sample site. The characteristics of land use and soil surface bacteria were compared. Most of the bacteria originated from the soil, however, animal-derived bacteria were also confirmed in areas used by animals. Our findings confirmed the existence of live bacteria in the dust-generating area, suggesting that their presence could affect animal and human health. Therefore, it is necessary to further investigate dust microbes based on the One Health concept.
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14
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Ren N, Wang Y, Ye Y, Zhao Y, Huang Y, Fu W, Chu X. Effects of Continuous Nitrogen Fertilizer Application on the Diversity and Composition of Rhizosphere Soil Bacteria. Front Microbiol 2020; 11:1948. [PMID: 32973705 PMCID: PMC7472254 DOI: 10.3389/fmicb.2020.01948] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/23/2020] [Indexed: 11/13/2022] Open
Abstract
Little has been reported on the effects of long-term fertilization on rhizosphere soil microbial diversity. Here, we investigated the effects of long-term continuous nitrogen (N) fertilization on the diversity and composition of soil bacteria using data from a 10-year field experiment with five N application rates (0, 120, 180, 240, and 360 kg N hm-2). The results revealed varying degrees of reduction in the numbers of bacterial operational taxonomic units (OTUs) in response to the different N application rates. The highest wheat yield and number of proprietary bacterial OTUs were found in the N input of 180 kg N hm-2. In terms of average relative richness, the top seven phyla of soil bacteria in the rhizosphere of wheat after long-term nitrogen application were Proteobacteria, Actinobacteria, Acidobacteria, Chloroflexi, Bacteroidetes, Gemmatimonadetes, and Patescibacteria. Among these, Proteobacteria and Gemmatimonadetes were found to be unaffected by the nitrogen fertilizer and soil environmental factors (pH, C/N ratio, and NO3 - concentration), whereas Acidobacteria and Actinobacteria showed significant positive and negative correlations, respectively, with soil pH. The richness of Actinobacteria significantly increased in the N180 treatment. Patescibacteria and Bacteroidetes showed significant positive correlations with soil NO3 - and wheat yield, and the average relative richness of these two phyla was high under long-term application of the N180 treatment. These findings indicate that the relative richness of Patescibacteria and Bacteroidetes can affect wheat yield. In conclusion, the results of our 10-year field experiments clearly show that long-term N fertilization can significantly affect most of the dominant soil bacterial species via changing the soil pH. The richness of Actinobacteria can serve as an indicator of a decreased soil pH caused by long-term N fertilization.
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Affiliation(s)
| | - Yang Wang
- Agricultural Green Development Engineering Technology Research Center, College of Resources and Environment, Henan Agricultural University, Zhengzhou, China
| | - Youliang Ye
- Agricultural Green Development Engineering Technology Research Center, College of Resources and Environment, Henan Agricultural University, Zhengzhou, China
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15
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Soil Bacterial Diversity and Its Relationship with Soil CO 2 and Mineral Composition: A Case Study of the Laiwu Experimental Site. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165699. [PMID: 32784524 PMCID: PMC7459831 DOI: 10.3390/ijerph17165699] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/27/2020] [Accepted: 08/03/2020] [Indexed: 11/29/2022]
Abstract
To better understand the characteristics of soil bacterial diversity in different environments, the Laiwu Qilongwan experimental site was selected as it is of great significance for the study of geochemical cycles. The soil CO2, mineral composition and bacterial community were analyzed by an EGM-4 portable environmental gas detector, an X-ray diffractometer and 16S rDNA high-throughput sequencing, and soil bacterial diversity and the relationship between soil bacterial diversity and environmental factors were studied. The results showed that with increasing soil depth, the CO2 content increased, the feldspar and amphibole contents increased, the quartz content decreased, the richness of the soil bacterial community increased, the relative richness of Nitrospirae increased, and Chloroflexi decreased. The dominant bacteria were Proteobacteria, Actinobacteria and Acidobacteria. There were slight differences in soil CO2, mineral composition and dominant bacterial flora at the same depth. Actinobacteria, Proteobacteria and Firmicutes were the dominant phyla of L02. The CO2 was lowest in bare land, and the quartz and K-feldspar contents were the highest. Soil CO2 mainly affected the deep bacterial diversity, while shallow soil bacteria were mainly affected by mineral components (quartz and K-feldspar). At the same depth, amphibole and clay minerals had obvious effects on the bacterial community, while CO2 had obvious effects on subdominant bacteria.
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16
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Chen X, Wang X, Zhong Z, Deng C, Chen Z, Chen X. Biological nitrogen removal via combined processes of denitrification, highly efficient partial nitritation and Anammox from mature landfill leachate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:29408-29421. [PMID: 32440874 DOI: 10.1007/s11356-020-09185-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
The combined processes of pre-denitrification, highly efficient partial nitritation and Anammox were developed to treat mature landfill leachate. In the partial nitritation stage, an outstanding nitrite production rate (NPR) of approximately 1.506 kg·(m3 day)-1 of mature landfill leachate was achieved in a zeolite biological aerated filter (ZBAF) due to the inhibition of nitrite-oxidizing bacteria (NOB) by free ammonia (FA) and free nitrous acid (FNA). With respect to the nitrogen removal performance of the combined process, remarkable nitrogen removal efficiencies (NRE) and nitrogen removal rates (NRR), which exceeded 90.0% and 0.490 kg·(m3 day)-1, respectively, were detected based on the stable and efficient partial nitritation performance and reasonable control of effluent nitrite to ammonium ratios (at approximately 1.2) in the ZBAF. High-throughput sequencing analysis further revealed that the dominant bacteria genera Paracoccus and Comamonas in the denitrification reactor, Nitrosomonas in the ZBAF and Candidatus Kuenenia and Candidatus Anammoxoglobus in the Anammox reactor were demonstrated to be responsible for denitrification, partial nitritation and Anammox process, respectively.
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Affiliation(s)
- Xiaozhen Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
| | - Xiaojun Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China.
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- Hua An Biotech Co., Ltd., Foshan, 528300, China.
| | - Zhong Zhong
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
| | - Cuilan Deng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
| | - Zhenguo Chen
- Hua An Biotech Co., Ltd., Foshan, 528300, China
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Xiaokun Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
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17
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Abd El-Azeim MM, Sherif MA, Hussien MS, Haddad SA. Temporal Impacts of Different Fertilization Systems on Soil Health under Arid Conditions of Potato Monocropping. JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 2020; 20:322-334. [DOI: 10.1007/s42729-019-00110-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 09/25/2019] [Indexed: 09/02/2023]
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18
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Sun J, Yang L, Wei J, Quan J, Yang X. The responses of soil bacterial communities and enzyme activities to the edaphic properties of coal mining areas in Central China. PLoS One 2020; 15:e0231198. [PMID: 32343698 PMCID: PMC7188301 DOI: 10.1371/journal.pone.0231198] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 03/18/2020] [Indexed: 12/21/2022] Open
Abstract
Soil physicochemical properties, bacterial communities and enzyme activities change with land subsidence resulting from coal mining. However, research on the responses of bacterial communities and enzyme activities to the soil properties in different degree of subsidence areas is limited. As such, we collected soil samples from a control area (C area), a moderate mining subsidence area (M area) and a severe mining subsidence area (S area) in Central China. Soil properties, such as the pH, total nitrogen (TN) content, total phosphorus (TP) content, available phosphorus (AP) content, organic matter (OM) content, and soil enzyme (urease, invertase, catalase and alkaline phosphatase) activities were measured in each sampling area at depths of 0-20 cm, 20-40 cm, and 40-60 cm. The results indicated that the soil physiochemical properties, soil urease activity, soil alkaline phosphatase activity and soil bacterial richness and diversity in the topsoil (0-20 cm) of the mining subsidence area were significantly lower than those in the C area. However, the soil enzyme activities within the deepest layer of the subsidence area were significantly greater than those of the C area. The bacterial communities within the depth of 0-20 cm were dominated by RB41, Pseudomonas, MND1, Nitrospira, Trichococcus, Sphingomonas and Dongia, whereas RB41 and Pseudomonas were the dominant species in the C area and subsidence area, respectively. Using correlation analysis, we found that the soil pH value, soil AP content and activities of the four enzymes were the main factors affecting the soil bacterial community structure. In addition, the soil nutrient contents, enzyme activities and bacterial richness and evenness decreased with increasing subsidence degree (classified by geological hazards, groundwater and landscape damage degree of coal mining subsidence). These results provide a reliable basis for environmental management of mining areas.
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Affiliation(s)
- Jinhua Sun
- College of Forestry, Henan Agricultural University, Zhengzhou, China
| | - Liu Yang
- College of Forestry, Henan Agricultural University, Zhengzhou, China
| | - Jie Wei
- Henan Ecological and Environmental Monitoring Center, Zhengzhou, China
| | - Jine Quan
- College of Forestry, Henan Agricultural University, Zhengzhou, China
| | - Xitian Yang
- College of Forestry, Henan Agricultural University, Zhengzhou, China
- * E-mail:
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19
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Catabolic Activity and Structural Diversity of Bacterial Community in Soil Covered by Halophytic Vegetation. Curr Microbiol 2020; 77:1821-1828. [PMID: 32342187 DOI: 10.1007/s00284-020-02001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 04/16/2020] [Indexed: 10/24/2022]
Abstract
The catabolic activity and structural diversity of soil bacteria covered by five different halophytic vegetation types in the Yellow River Delta affected by long-term salinization were studied using Biolog-Eco technology. The result showed that soil quality, the diversity, and catabolic activity of the bacterial community of mildly salt-tolerant vegetation (Imperata cylindrical (L.) Beauv. and Apocynum venetum L.) were significantly higher than those of the bacterial community of highly salt-tolerant vegetation (Suaeda salsa (L.) Pall., Aeluropus sinensis (D.) Tzvel.), while these values were lowest for bacterial communities in bare land. The operational taxonomic units (OTUs) and diversity indexes of soil bacteria covered by Aeluropus sinensis were higher than those of soil bacteria covered by other types of vegetation, while those of soil bacteria covered by bare land were lowest. Principal component analysis (PCA) of the carbon source utilization capacity of the soil bacterial communities showed that organic acids, polymers, and amino acids were sensitive carbon sources that enabled study of the diversity of carbon metabolic functions in soil bacterial communities. And redundancy analysis (RDA) showed that D-galacturonic was significantly positively correlated with Verrucomicrobia, which further demonstrated the effect of organic acid carbon sources on metabolic functional diversity of soil bacterial communities in the Yellow River Delta.
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Chen S, Zhang J, Wen Z. Identification of Fungal Dynamics Associated With Black Locust Leaves Mineralization and Their Correlations With Physicochemical Factors. Front Microbiol 2020; 11:348. [PMID: 32318027 PMCID: PMC7154111 DOI: 10.3389/fmicb.2020.00348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 02/17/2020] [Indexed: 11/26/2022] Open
Abstract
In this study, the fungal dynamics associated with black locust (BL) mineralization and its correlation with various environmental factors were evaluated across three different vegetation types along a gradient of temperature and humidity. The results confirmed that Ascomycota and Basidiomycota were the dominant phyla in each habitat, with average relative abundance of 86.57 and 11.42%, respectively. But both phylum abundance varied significantly among different BL leaves' decomposing habitats. Black locust changed the most significantly in the forest habitat and the least in the steppe. In addition, the litter characteristics of BL decreased with total carbon and total nitrogen mineralization and underground water level in water-rich region, while this result was significantly consistent with the fungal diversity. Co-occurrence network studies revealed that significant correlations were found between fungal community composition and environmental factors, the decrease of underground water level influence the fungal structure in forest habitat. Finally, the present study results provide important insights about the biological invasion of new ecosystems.
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Affiliation(s)
- Sihui Chen
- College of Grassland Agriculture, Northwest A&F University, Yangling, China
| | - Jing Zhang
- Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an, China
- Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an, China
| | - Zhongming Wen
- College of Grassland Agriculture, Northwest A&F University, Yangling, China
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Yang Y, Cheng H, Dou Y, An S. Plant and soil traits driving soil fungal community due to tree plantation on the Loess Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134560. [PMID: 31780176 DOI: 10.1016/j.scitotenv.2019.134560] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 08/31/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
It is widely accepted that soil fungi plays a crucial role in biogchemical cycle in terrestrial ecosystems, and soil fungal community can be shaped by plant and soil traits; however, we still know very little about the combined impacts of plant and soil traits on soil fungal community due to tree plantation, especially on the Loess Plateau. In doing so, we provided a conceptual framework bridging knowledge on plant, soil traits and soil fungal community, which tested the combined impacts of plant and soil traits on soil fungal community due to tree plantation compared with natural restoration (CK) on the Loess Plateau. There was a disproportionate influence of tree plantation on soil fungal community by using nonmetric multidimensional scaling (NMDS) (p < 0.05) and the interaction networks. Additionally, soil organic carbon (SOC), soil pH, C/N, biomass in litter and root were highly related to the dominant soil fungal community (such as Ascomycota and Basidiomycota), which can be considered as the main drivers for soil fungal community. Most importantly, litter traits and root traits were considered as the key predictors in shaping soil fungal community in terms of tree plantation (especially litter and root C/N), while soil traits and root traits were considered as the key predictors in terms of natural restoration. Besides, structural equation modeling (SEM) indicated that soil fungal community was co-mediated by soil and plant traits due to tree plantation, and the total effects of soil traits, plant traits, litter traits and root traits on soil fungal community were higher in tree plantation, suggesting that tree plantation had a large effect on soil fungal community compared to natural restoration. Finally, we build a conceptual framework to clarify the combined impacts of plant and soil traits on soil fungal community, providing a new sight to understand the crucial role of plant and soil traits in shaping soil fungal community due to tree plantation, and the interactions among plant and soil and also soil fungal community need further studies.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an 710061, China
| | - Huan Cheng
- Department of Biology, University of Maryland, College Park, MD 20742, USA
| | - Yanxing Dou
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China
| | - Shaoshan An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China.
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22
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Yang Y, Dou Y, Cheng H, An S. Plant functional diversity drives carbon storage following vegetation restoration in Loess Plateau, China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 246:668-678. [PMID: 31216512 DOI: 10.1016/j.jenvman.2019.06.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Ongoing climatic changes induced by human activities increases in atmospheric carbon dioxide (CO2), which have considerable effects on the structure and function of ecosystems, including carbon (C) storage, plant functional traits and therefore on a wide set of ecosystem services. Plant functional diversity is benefit to improve plant photosynthesis and enhance C efficiency and therefore decrease CO2. Here, the focus of this article is on integrating of plant functional diversity and C storage, which aims to contribute to C sequestration for climate change mitigation following vegetation restoration in Loess Plateau, China. Firstly, the CWM (plant community-weighted mean) traits of the most abundant plant species can account for C storage in AGBC (above-ground biomass C), ALC (above-ground litter C), STC (soil total carbon) and TEC (total ecosystem carbon). Secondly, the CWM of plant height and LCC (leaf carbon concentration) had a positive effect C storage in different part (AGBC, ALC, STC and TEC), while the CWM of LNC (leaf nitrogen concentration) and SLA (specific leaf area) had a negative effect on C storage in different part. Further, the CWM of plant height, LCC, SLA and plant functional dispersion (FDis) can be used to predict C storage by multiple linear regression analysis. Finally, the positive association between FDis and C storage was found in SEM, shedding light on the key role of plant functional diversity driving C storage following vegetation restoration. The findings presented here highlight the importance of both plant traits of dominant species and plant functional diversity in regulating C storage, and show that favorable climate conditions, particularly vegetation restoration, tend to increase C storage and plant functional diversity, which have important implications for improving global C cycling and ecosystem services.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xi'an, 710061, China
| | - Yanxing Dou
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China
| | - Huan Cheng
- Department of Biology, University of Maryland, College Park, MD, 20742, USA
| | - Shaoshan An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China.
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Liu D, Wang H, An S, Bhople P, Davlatbekov F. Geographic distance and soil microbial biomass carbon drive biogeographical distribution of fungal communities in Chinese Loess Plateau soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:1058-1069. [PMID: 30743903 DOI: 10.1016/j.scitotenv.2019.01.097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 06/09/2023]
Abstract
Fungi are ecological drivers of carbon cycle in soils and also effectively mediate mineral nutrition for plants especially in the severely eroded Loess Plateau of China. However, factors determining variations in fungal diversity and their biogeographic patterns in this rigorously affected landscape area remain poorly understood. Therefore, we performed Illumina MiSeq high throughput sequencing of the fungal specific, internal transcribed spacer 2 (ITS2) region from 24 representative soils covering forest, grassland and agricultural lands from 8 distinct landscapes. Using this technique, we demonstrate that fungal members belonging to phylum Ascomycota dominated in all soils investigated in this study with an average relative abundance higher than 80%. High fungal richness in the Loess Plateau soils is ascribed to the retrieval of 1,822,499 quality sequences belonging to 13,533 different phylotypes. However, this richness/phylotype number decreased (from 779 to 561) with increasing longitudinal gradient through 107°39' to 109°36'. Interestingly, higher fungal diversity (in terms of presence of diverse fungal taxa) occurred as microbial biomass carbon (MBC) concentration decreased (approximately from 500 to 100mgkg-1) in soils. Variation partitioning analysis revealed that geographic distance contributed more to fungal community variation (38.3%) than soil properties (22.2%) at the landscape level (~400km). As indicated by non-metric multidimensional scaling (NMDS), among soil properties, concentrations of MBC primarily affected (significantly corrected with NMDS 1; r=0.620; p<0.01) fungal community structure in the current study. This study therefore constitutes an essential set of information and recommends usage of information on fungal community structure as a potential ecological indicator of the Loess Plateau region.
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Affiliation(s)
- Dong Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, PR China; Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Honglei Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, PR China
| | - Shaoshan An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, PR China.
| | - Parag Bhople
- Faculty of Organic Agricultural Sciences, Department of Soil Biology and Plant Nutrition, University of Kassel, Germany
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24
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Wang Z, Lam K, Hu J, Ge S, Zhou A, Zheng B, Zeng S, Lin S. Chlorogenic acid alleviates obesity and modulates gut microbiota in high-fat-fed mice. Food Sci Nutr 2019; 7:579-588. [PMID: 30847137 PMCID: PMC6392816 DOI: 10.1002/fsn3.868] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/02/2018] [Accepted: 10/04/2018] [Indexed: 01/05/2023] Open
Abstract
To evaluate the anti-obesity effects of chlorogenic acid (CGA), the mice were fed a high-fat diet (HFD) upon chlorogenic acid treatment for 6 weeks. The results showed administration of chlorogenic acid (150 mg per kg per day) remarkably promoted body loss, reduced lipid levels in plasma and altered mRNA expression of lipogenesis and lipolysis related genes in adipose tissue. Moreover, chlorogenic acid also reversed the HFD-induced gut microbiota dysbiosis, including significantly inhibiting the growth of Desulfovibrionaceae, Ruminococcaceae, Lachnospiraceae, Erysipelotrichaceae, and raising the growth of Bacteroidaceae, Lactobacillaceae. Overall, the amelioration of HFD-induced gut microbiota dysbiosis by chlorogenic acid may contribute, at least partially, to its beneficial effects on ameliorating HFD-induced obesity.
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Affiliation(s)
- Zhengyu Wang
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special StarchFujian Agriculture and Forestry UniversityFuzhouChina
| | - Ka‐Lung Lam
- School of Life SciencesThe Chinese University of Hong KongShatinHong Kong S.A.R.China
| | - Jiamiao Hu
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special StarchFujian Agriculture and Forestry UniversityFuzhouChina
| | - Shenghan Ge
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special StarchFujian Agriculture and Forestry UniversityFuzhouChina
| | - Arong Zhou
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special StarchFujian Agriculture and Forestry UniversityFuzhouChina
| | - Baodong Zheng
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special StarchFujian Agriculture and Forestry UniversityFuzhouChina
| | - Shaoxiao Zeng
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Shaoling Lin
- College of Food ScienceFujian Agriculture and Forestry UniversityFuzhouChina
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special StarchFujian Agriculture and Forestry UniversityFuzhouChina
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25
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Liu D, Yang Y, An S, Wang H, Wang Y. The Biogeographical Distribution of Soil Bacterial Communities in the Loess Plateau as Revealed by High-Throughput Sequencing. Front Microbiol 2018; 9:2456. [PMID: 30405547 PMCID: PMC6200921 DOI: 10.3389/fmicb.2018.02456] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 09/25/2018] [Indexed: 02/01/2023] Open
Abstract
The rigorous environmental stress of the severely eroded Loess Plateau may have promoted specific soil bacterial communities in comparison to other eco-environmental regions. In order to unmask the bacterial diversity and most influential environmental parameters, Illumina MiSeq high throughput sequencing of 16S rRNA from 24 representative soil samples collected across south-east to north-west transect of the Loess Plateau in northern Shaanxi, China was conducted. This high-throughput sequencing revealed a total of 1,411,001 high quality sequences that classified into 38 phyla, 127 classes, >240 orders, and over 650 genera, suggesting a high bacterial richness across the Loess Plateau soils. The seven dominant groups were: Proteobacteria, Actinobacteria, Acidobacteria, Planctomycetes, Gemmatimonadetes, Chloroflexi, and Verrucomicrobi (relative abundance of >5%). Increasing/decreasing soil pH and geographic longitudinal distance correlated significantly with increasing/decreasing bacterial richness and diversity indices. Pairwise correlation analysis showed higher bacterial diversity at longitudinal gradients across 107°39'-109°15' (south-east to north-west) in our studied Chinese loess zone. Variation partitioning analysis indicated significant influence of soil characteristics (~40.4%) than geographical distance (at a landscape scale of ~400 km) that was responsible for 13.6% of variation in bacterial community structure from these soils. Overall, contemporary soil characteristics structure the bacterial community in Loess Plateau soil to a greater extent than the spatial distances along the loess transect.
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Affiliation(s)
- Dong Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, China.,Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Yang Yang
- Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Shaoshan An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, China
| | - Honglei Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, China
| | - Ying Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, China
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