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Higher precipitation strengthens the microbial interactions in semi-arid grassland soils
Wang, Shang; Wang, Xiaobo1,2; Han, Xingguo1,3,4; Deng, Ye3
2018
发表期刊GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN1466-822X
卷号27期号:5页码:570-580
摘要Aim: Growing attention has been focused on the changes in the structure and diversity of microbial communities under altered precipitation pattern, but little is known about how this factor impacts microbial interactions. Our aim was to elucidate the variations of microbial interactions in semi-arid grassland soils and determine the key factor in regulating microbial assemblies in water-limited areas. Location: A c.3,700 km transect across three habitats (desert, desert grassland and typical grassland) in Northern China. Time period: July and August 2012. Major taxa studiedTotal bacteria and archaea. Method: The random matrix theory (RMT)-based network inference approach was used to construct species interaction networks. The relationships between microbial network topology and environmental variables were examined by Mantel and partial Mantel tests. Results: At the regional scale (across habitats), mean annual precipitation was the most important factor constraining the network structure, whereas at the local scale (within a habitat), soil conditions and plant parameters became more important, but their relative effects differed among habitats. In particular, no correlation was detected between the desert network and any environmental factors. The number of central species increased substantially in desert grassland and typical grassland networks in comparison to those in the desert network. Inter- and intra-module connections, particularly negative connections, also increased in the two grassland habitats. Main conclusions: Microbial networks become more complex as precipitation increases. A simple network structure (no connectors between modules, more sparsely distributed species and lower competitive links) and less association with environmental factors in the desert network indicate that microbial communities in extremely dry ecosystems are unstable and vulnerable; that is, future climate change will greatly influence microbial interactions in these extremely dry areas. Overall, our findings provide new insight into the way in which microbes respond to changing precipitation patterns by regulating their interactions in water-limited ecosystems.
关键词global climate change grassland microbial community microbial interactions network analysis precipitation semi-arid ecosystem
学科领域Ecology ; Geography, Physical
DOI10.1111/geb.12718
收录类别SCI
语种英语
WOS关键词COMMUNITY STRUCTURE ; FUNGAL COMMUNITIES ; NETWORK ANALYSIS ; CLIMATE-CHANGE ; DIVERSITY ; BACTERIAL ; WATER ; RESPONSES ; PATTERNS ; REVEALS
WOS记录号WOS:000430916700006
出版者WILEY
文献子类Article
出版地HOBOKEN
EISSN1466-8238
资助机构National Key Research and Development Plan [2016YFC0500702] ; Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-DQC026] ; Strategic Priority Research Program of CAS [XDB15010302] ; CAS 100 talent programChinese Academy of Sciences
作者邮箱xbwang@iae.ac.cn ; yedeng@rcees.ac.cn
引用统计
被引频次:136[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/20493
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, CAS Key Lab Environm Biotechnol, 18 Shuangqing Rd, Beijing 100085, Peoples R China
2.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang, Liaoning, Peoples R China
3.Northeast Normal Univ, Key Lab Vegetat Ecol, Minist Educ, Changchun, Jilin, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Bot, Beijing, Peoples R China
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GB/T 7714
Wang, Shang,Wang, Xiaobo,Han, Xingguo,et al. Higher precipitation strengthens the microbial interactions in semi-arid grassland soils[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2018,27(5):570-580.
APA Wang, Shang,Wang, Xiaobo,Han, Xingguo,&Deng, Ye.(2018).Higher precipitation strengthens the microbial interactions in semi-arid grassland soils.GLOBAL ECOLOGY AND BIOGEOGRAPHY,27(5),570-580.
MLA Wang, Shang,et al."Higher precipitation strengthens the microbial interactions in semi-arid grassland soils".GLOBAL ECOLOGY AND BIOGEOGRAPHY 27.5(2018):570-580.
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