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Proximate grassland and shrub-encroached sites show dramatic restructuring of soil bacterial communities

文献类型：期刊论文

作者Xiang, Xingjia; Gibbons, Sean M.; Li, He1; Shen, Haihua2; Chu, Haiyan4
刊名PEERJ
出版日期2019
卷号7
关键词Shrub encroachment Bacterial community Grassland ecosystem Niche filtering Sequencing
ISSN号2167-8359
DOI10.7717/peerj.7304
文献子类Article
英文摘要Background: Changes in aboveground community composition and diversity following shrub encroachment have been studied extensively. Recently, shrub encroachment was associated with differences in belowground bacterial communities relative to non-encroached grassland sites hundreds of meters away. This spatial distance between grassland and shrub sites left open the question of how soil bacterial communities associated with different vegetation types might differ within the same plot location. Methods: We examined soil bacterial communities between shrub-encroached and adjacent (one m apart) grassland soils in Chinese Inner Mongolian, using high-throughput sequencing method (Illumina, San Diego, CA, USA). Results: Shrub-encroached sites were associated with dramatic restructuring of soil bacterial community composition and predicted metabolic function, with significant increase in bacterial alpha-diversity. Moreover, bacterial phylogenic structures showed clustering in both shrub-encroached and grassland soils, suggesting that each vegetation type was associated with a unique and defined bacterial community by niche filtering. Finally, soil organic carbon (SOC) was the primary driver varied with shifts in soil bacterial community composition. The encroachment was associated with elevated SOC, suggesting that shrub-mediated shifts in SOC might be responsible for changes in belowground bacterial community. Discussion: This study demonstrated that shrub-encroached soils were associated with dramatic restructuring of bacterial communities, suggesting that belowground bacterial communities appear to be sensitive indicators of vegetation type. Our study indicates that the increased shrub-encroached intensity in Inner Mongolia will likely trigger large-scale disruptions in both aboveground plant and belowground bacterial communities across the region.
学科主题Multidisciplinary Sciences
出版地LONDON
WOS关键词WOODY PLANT ENCROACHMENT ; MICROBIAL COMMUNITIES ; ORGANIC-CARBON ; PHYLOGENETIC STRUCTURE ; JUNIPERUS-VIRGINIANA ; MESIC GRASSLAND ; ECOSYSTEM ; EXPANSION ; NITROGEN ; DYNAMICS
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000476466200004
出版者PEERJ INC
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31801989, 31330012] ; Natural Science Foundation of Education Committee of Anhui ProvinceNatural Science Foundation of Anhui Province [KJ2018A0001] ; Training Project for Xingjia Xiang [S020118002, Z010139012] ; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB15010101] ; Washington Research Foundation Distinguished Investigator Award ; startup funds from the Institute for Systems Biology
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/19511]  
专题植被与环境变化国家重点实验室
作者单位1.Gibbons, Sean M.] Inst Syst Biol, Seattle, WA USA
2.Jiangsu Normal Univ, Sch Geog Geomat & Planning, Xuzhou, Jiangsu, Peoples R China
3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Jiangsu, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
5.Anhui Univ, Sch Resources & Environm Engn, Anhui Prov Key Lab Wetland Ecol Protect & Restora, Hefei, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Xiang, Xingjia,Gibbons, Sean M.,Li, He,et al. Proximate grassland and shrub-encroached sites show dramatic restructuring of soil bacterial communities[J]. PEERJ,2019,7.
APA Xiang, Xingjia,Gibbons, Sean M.,Li, He,Shen, Haihua,&Chu, Haiyan.(2019).Proximate grassland and shrub-encroached sites show dramatic restructuring of soil bacterial communities.PEERJ,7.
MLA Xiang, Xingjia,et al."Proximate grassland and shrub-encroached sites show dramatic restructuring of soil bacterial communities".PEERJ 7(2019).

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来源：植物研究所

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