Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain
文献类型： 外文期刊
作者： Wang, Shuang 1 ; Sun, Lei 1 ; Ling, Ning 2 ; Zhu, Chen 2 ; Chi, Fengqin 1 ; Li, Weiqun 1 ; Hao, Xiaoyu 1 ; Zhang, Wu 3 ; Bia 1 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resources, Key Lab Soil Environm & Plant Nutr Heilongjiang P, Heilongjiang Fertilizer Engn Res Ctr, Harbin, Peoples R China
2.Nanjing Agr Univ, Jiangsu Prov Key Lab Organ Sold Waste Utilizat, Nanjing, Peoples R China
3.Heilongjiang Acad Agr Sci, Heihe Branch, Heihe, Heilongjiang, Peoples R China
4.Heilongjiang Acad Agr Sci, Daqing Branch, Daqing, Peoples R China
5.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing, Peoples R China
关键词： bacterial community; driving force; electrical conductivity; saline-alkali soil; Songnen Plain
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）
ISSN： 1664-302X
年卷期： 2020 年 10 卷
页码：
收录情况： SCI
摘要： Songnen Plain is originally one of the three major glasslands in China and has now become one of the three most concentrated distribution areas of sodic-saline soil worldwide. The soil is continuously degraded by natural and anthropogenic processes, which has a negative impact on agricultural production. The investigation of microbial diversity in this degraded ecosystem is fundamental for comprehending biological and ecological processes and harnessing the potential of microbial resources. The Illumina MiSeq sequencing method was practiced to investigate the bacterial diversity and composition in saline-alkali soil. The results from this study show that the change in pH under alkaline conditions was not the major contributor in shaping bacterial community in Songnen Plain. The electrical conductivity (EC) content of soil was the most important driving force for bacterial composition (20.83%), and the second most influencing factor was Na+ content (14.17%). Bacterial communities were clearly separated in accordance with the EC. The dominant bacterial groups were Planctomycetes, Proteobacteria, and Bacteroidetes among the different salinity soil. As the salt concentration increased, the indicators changed from Planctomycetes and Bacteroidetes to Proteobacteria and Firmicutes. Our results suggest that Proteobacteria and Firmicutes were the main indicator species reflecting changes of the main microbial groups and the EC as a key factor drives the composition of the bacterial community under alkaline conditions in saline-alkali soil of Songnen Plain.
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