文献类型：期刊文献

英文题名：Competition and habitat filtering jointly explain phylogenetic structure of soil bacterial communities across elevational gradients

作者：Zhang, Qian[1,2,3] Goberna, Marta[4] Liu, Yuguo[5] Cui, Ming[5] Yang, Haishui[6] Sun, Qixiang[2] Insam, Heribert[3] Zhou, Jinxing[7]

第一作者：Zhang, Qian;张倩

通信作者：Zhou, JX[1]

机构：[1]Beijing Forestry Univ, State Forestry Adm Soil & Water Conservat, Key Lab, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, 1 Dongxiaofu,Xiangshan Rd, Beijing 100091, Peoples R China;[3]Univ Innsbruck, Inst Microbiol, Technikerstr 25d, A-6020 Innsbruck, Austria;[4]CSIC, Ctr Invest Desertificac, CIDE, Carretera Moncada Naquera,Km 4-5, Valencia 46113, Spain;[5]Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China;[6]Nanjing Agr Univ, Coll Agr, Nanjing 210095, Jiangsu, Peoples R China;[7]Beijing Forestry Univ, Sch Soil & Water Conservat, Jianshui Natl Field Stn, Beijing 100083, Peoples R China

年份：2018

卷号：20

期号：7

起止页码：2386-2396

外文期刊名：ENVIRONMENTAL MICROBIOLOGY

收录：;Scopus(收录号：2-s2.0-85052494622);WOS:【SCI-EXPANDED(收录号:WOS:000443114300007)】；

基金：We are grateful to Dr. Ingrid Franke-Whittle (Institute of Microbiology, University of Innsbruck) and Prof. Dr. Roger Koide (Brigham Young University) for providing helpful comments on the article. Dr. Wang Jianjun (Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences) assisted in analyzing phylogenetic beta-diversity. This work was funded by Special Fund for Forest Scientific Research in the Public Welfare of China (No. 201504401) and the National Natural Science Foundation of China (Nos. 30870231 and 31300105). MG thanks the Spanish Ministry of Economy and Competitiveness (MINECO) for funding through the Ramon y Cajal programme. We thank the editor and referees for insightful comments that helped the improvement of this article.

语种：英文

摘要：The importance of assembly processes in shaping biological communities is poorly understood, especially for microbes. Here, we report on the forces that structure soil bacterial communities along a 2000 m elevational gradient. We characterized the relative importance of habitat filtering and competition on phylogenetic structure and turnover in bacterial communities. Bacterial communities exhibited a phylogenetically clustered pattern and were more clustered with increasing elevation. Biotic factors (i.e., relative abundance of dominant bacterial lineages) appeared to be most important to the degree of clustering, evidencing the role of the competitive ability of entire clades in shaping the communities. Phylogenetic turnover showed the greatest correlation to elevation. After controlling the elevation, biotic factors showed greater correlation to phylogenetic turnover than all the habitat variables (i.e., climate, soil and vegetation). Structural equation modelling also identified that elevation and soil organic matter exerted indirect effects on phylogenetic diversity and turnover by determining the dominance of microbial competitors. Our results suggest that competition among bacterial taxa induced by soil carbon contributes to the phylogenetic pattern across elevational gradient in the Tibetan Plateau. This highlights the importance of considering not only abiotic filtering but also biotic interactions in soil bacterial communities across stressful elevational gradients.