Analysis of saline-alkali soil bacterial community structure in Hami of Xinjiang based on high-throughput sequencing technology

doi:10.14088/j.cnki.issn0439-8114.2022.11.010

Abstract

Abstract: Soil salinization in Xinjiang is severe, and the structure and distribution pattern of the soil microbial community are the basis and premise of soil evolution and saline-alkali land amelioration. In this study, in-situ sampling and high-throughput sequencing were used to analyze the diversity and composition of soil microbial communities in saline-alkali soil of Hami, Xinjiang. The results showed that Bacteroidetes, Proteobacteria and Actinobacteria were the dominant bacteria in the saline-alkali soil in Hami, Xinjiang, and there were significant differences in bacterial community structure among groups. Soil conductivity had a significant effect on Bacteroidetes and Deinococcus-Thermus, and soil pH had the most significant effect on bacterial community diversity and composition. Tax4Fun2 prediction results showed that the metabolic function of the soil microbial community in this region was rich in environmental information processing. The pH of plant shrub soil was generally lower than that of bare soil in all regions. With the decrease of the distance between each region and the lake, the soil moisture content gradually increased, and the soil pH showed a decreasing trend. It can be concluded that vegetation may be the primary factor affecting the change of soil properties, and soil pH may be the main factor affecting the change of bacterial community in each region of in Hami of Xinjiang saline-alkali land.

Key words: saline-alkali land in Xinjiang, bacterial community structure, diversity, the physiochemical factors, high-throughput sequencing

CLC Number:

Q938

LI Zhuo-ran, ZHANG Zi-yi, RUAN Ai-dong, LU Xiang, WU Shuai. Analysis of saline-alkali soil bacterial community structure in Hami of Xinjiang based on high-throughput sequencing technology[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(11): 54-61.

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