Diversity of bacterium communities in saline-alkali soil in arid regions of Northwest China
文献类型： 外文期刊
作者： Nan, Lili 1 ; Guo, Quanen 2 ; Cao, Shiyu 2 ; Zhan, Zongbing 2 ;
作者机构： 1.Gansu Agr Univ, Minist Educ, Coll Grassland Sci, Key Lab Grassland Ecosyst, Lanzhou 730070, Gansu, Peoples R China
2.Gansu Acad Agr Sci, Inst Soil Fertilizer & Water Saving, Lanzhou 730070, Gansu, Peoples R China
关键词： Illumina MiSeq sequencing; Bacterial community; Driving force; Diversity; Saline-alkali soil
期刊名称：BMC MICROBIOLOGY （ 影响因子：4.465； 五年影响因子：4.818 ）
ISSN： 1471-2180
年卷期： 2022 年 22 卷 1 期
页码：
收录情况： SCI
摘要： Background The saline-alkali soil area accounts for over 1/4-1/5 of the land area in Gansu Province of China, which are mainly distributed in the north of Hexi corridor and Jingtai basin. The unique ecological environment contains unique and diverse microbial resources. The investigation of microbial diversity in saline environment is vital to comprehend the biological mechanisms of saline adaption, develop and utilize microbial resources. Results The Illumina MiSeq sequencing method was practiced to investigate the bacterial diversity and composition in the 5 subtypes and 13 genera of saline-alkali soil in Gansu Province, China. The results from this study show that Proteobacteria, Bacteroidetes, Actinobacteria, Firmicutes, and Gemmatimonadetes were the dominant bacterial groups in 13 saline soil. Proteobacteria had the greatest abundance in sulfate-type meadow solonchaks and orthic solonchaks, chloride-type orthic solonchaks and bog solonchaks, sulfate-chloride-type, chloride-sulfate-type, and sulfate-type dry solonchaks. Halobacteria was the dominant bacterial class in soil samples except for sulfate-type meadow solonchaks and orthic solonchaks, chloride-type orthic solonchaks and bog solonchaks. The richness estimators of Ace and Chao 1 and the diversity indices of Shannon and Simpson revealed the least diversity in bacterial community in sulfate-chloride-type orthic solonchaks. Conclusions The sulfate anion was the most important driving force for bacterial composition (17.7%), and the second most influencing factor was pH value (11.7%).
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