Microbial Responses to Simulated Salinization and Desalinization in the Sediments of the Qinghai-Tibetan Lakes

doi:10.3389/fmicb.2020.01772

ISL OpenIR > 盐湖地质与环境实验室

	Microbial Responses to Simulated Salinization and Desalinization in the Sediments of the Qinghai-Tibetan Lakes
	Huang, Jianrong; Yang, Jian; Jiang, Hongchen; Wu, Geng; Liu, Wen; Wang, Beichen; Xiao, Haiyi; Han, Jibin
第一作者	Huang, Jianrong
	2020-08-07
发表期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
卷号	11
摘要	Uncovering microbial response to salinization or desalinization is of great importance to understanding of the influence of global climate change on lacustrine microbial ecology. In this study, to simulate salinization and desalinization, sediments from Erhai Lake (salinity 0.3-0.8 g/L) and Chaka Lake (salinity 299.3-350.7 g/L) on the Qinghai-Tibetan Plateau were transplanted into different lakes with a range of salinity of 0.3-299.3 g/L, followed byin situincubation for 50 days and subsequent geochemical and microbial analyses. Desalinization was faster than salinization in the transplanted sediments. The salinity of the transplanted sediment increased and decreased in the salinization and desalinization simulation experiments, respectively. The TOC contents of the transplanted sediments were lower than that of their undisturbed counterparts in the salinization experiments, whereas they had a strong negative linear relationship with salinity in the desalinization experiments. Microbial diversity decreased in response to salinization and desalinization, and microbial community dissimilarity significantly (P< 0.01) increased with salinity differences between the transplanted sediments and their undisturbed counterparts. Microbial groups belonging toGammaproteobacteriaandActinobacteriabecame abundant in salinization whereasBacteroidetesandChloroflexibecame dominant in desalinization. Among the predicted microbial functions, hydrogenotrophic methanogenesis, methanogenesis through CO(2)reduction with H-2, nitrate/nitrogen respiration, and nitrification increased in salinization; in desalinization, enhancement was observed for respiration of sulfur compounds, sulfate respiration, sulfur respiration, thiosulfate respiration, hydrocarbon degradation, chemoheterotrophy, and fermentation, whereas depressing was found for aerobic ammonia oxidation, nitrate/nitrogen respiration, nitrification, nitrite respiration, manganese oxidation, aerobic chemoheterotrophy, and phototrophy. Such microbial variations could be explained by changes of transplantation, salinity, and covarying variables. In summary, salinization and desalinization had profound influence on the geochemistry, microbial community, and function in lakes.
DOI	10.3389/fmicb.2020.01772
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/33986
专题	盐湖地质与环境实验室中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Huang, Jianrong,Yang, Jian,Jiang, Hongchen,et al. Microbial Responses to Simulated Salinization and Desalinization in the Sediments of the Qinghai-Tibetan Lakes[J]. FRONTIERS IN MICROBIOLOGY,2020,11.
APA	Huang, Jianrong.,Yang, Jian.,Jiang, Hongchen.,Wu, Geng.,Liu, Wen.,...&Han, Jibin.(2020).Microbial Responses to Simulated Salinization and Desalinization in the Sediments of the Qinghai-Tibetan Lakes.FRONTIERS IN MICROBIOLOGY,11.
MLA	Huang, Jianrong,et al."Microbial Responses to Simulated Salinization and Desalinization in the Sediments of the Qinghai-Tibetan Lakes".FRONTIERS IN MICROBIOLOGY 11(2020).

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