Community structure and elevational diversity patterns of soil Acidobacteria

作     者：Yuguang Zhang Jing Cong Hui Lu Guangliang Li Yuanyuan Qu Xiujiang Su Jizhong Zhou Diqiang Li 

作者机构：Institute of Forestry EcologyEnvironment and ProtectionKey Laboratory of Forest Ecology and Environment of State Forestry AdministrationChinese Academy of Forestry School of Mineral Processing and BioengineeringCentral South University Institute for Environmental GenomicsDepartment of Botany and MicrobiologyUniversity of Oklahoma Hunan Baiyunshan National Nature Reserve 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2014年第26卷第8期

页      面：1717-1724页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：supported by the Public Welfare Project of the National Scientific Research Institution (No.CAFRIFEEP201101),China the National Biological Specimens and Resources Sharing Platform in Nature Reserve (No.2005DKA21404) 

主　　题：Elevational pattern Potential metabolic activity Acidobacterial subdivision Soil pH Driving factor Environmental change 

摘      要：Acidobacteria is one of the most dominant and abundant phyla in soil,and was believed to have a wide range of metabolic and genetic functions. Relatively little is known about its community structure and elevational diversity patterns. We selected four elevation gradients from 1000 to 2800 m with typical vegetation types of the northern slope of Shennongjia Mountain in central China. The vegetation types were evergreen broadleaved forest,deciduous broadleaved forest,coniferous forest and sub-alpine shrubs. We analyzed the soil acidobacterial community composition,elevational patterns and the relationship between Acidobacteria subdivisions and soil enzyme activities by using the 16 S rRNA meta-sequencing technique and multivariate statistical analysis. The result found that 19 known subdivisions as well as an unclassified phylotype were presented in these forest sites,and Subdivision 6 has the highest number of detectable operational taxonomic units（OTUs）. A significant single peak distribution pattern（P 〈 0.05） between the OTU number and the elevation was observed. The Jaccard and Bray–Curtis index analysis showed that the soil Acidobacteria compositional similarity significantly decreased（P 〈 0.01） with the increase in elevation distance. Mantel test analysis showed the most of the soil Acidobacteria subdivisions had the significant relationship（P 〈 0.01） with different soil enzymes. Therefore,soil Acidobacteria may be involved in different ecosystem functions in global elemental cycles. Partial Mantel tests and CCA analysis showed that soil pH,soil temperature and plant diversity may be the key factors in shaping the soil Acidobacterial community structure.