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Metagenomic Analysis Reveals the Response of Microbial Communities and Their Functions in Lake Sediment to Environmental Factors

文献类型： 外文期刊

作者： Song, Dan 1 ; Huo, Tangbin 1 ; Zhang, Zhao 3 ; Cheng, Lei 1 ; Wang, Le 1 ; Ming, Kun 4 ; Liu, Hui 1 ; Li, Mengsha 5 ; Du, Xue 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China

2.Heilongjiang River Basin Fisheries Ecol Observat &, Harbin 150070, Peoples R China

3.Northwest A&F Univ, Coll Anim Sci & Technol, Xianyang 712100, Peoples R China

4.Reserve Assets Author, Harbin 150030, Peoples R China

5.Heilongjiang Acad Sci, Inst Nat & Ecol, Harbin 150040, Peoples R China

关键词： metagenomics; lake sediments; microbial community; metabolic functions; Jingpo Lake

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：4.614； 五年影响因子：4.798 ）

ISSN：

年卷期： 2022 年 19 卷 24 期

页码：

收录情况： SCI

摘要： Jingpo Lake is the largest mountain barrier lake in China and plays a key role in breeding, power generation, and providing a source of drinking water. Microbes are important participants in the formation of lake resources and energy cycles. However, the ecological protection of Jingpo Lake has faced serious challenges in recent years. In this study, we investigate the responses of the microbial community's composition of sediments at five locations to an environmental gradient representing water quality and water-depth changes using a metagenomic sequence. We found that the diversity and composition of the microbiota sediments were altered spatially and correlated with the physicochemical factors of water samples. In the microbial community, relatively lower Chaol, alternating conditional expectations, and Shannon and Simpson indices were found at the shallowest location with higher total phosphorus and chlorophyll a. Furthermore, the Kyoto Encyclopedia of Genes and Genomes analysis revealed that the metabolism function was the most abundant functional classification in Jingpo Lake. The levels of total phosphorus, chlorophyll a and pH were positively correlated with the abundance of Flavobacterium and the bacterial functions of the carbohydrate metabolism and amino acid metabolism. In conclusion, our results reveal the physical and chemical characteristics, as well as the microbial community characteristics, of Jingpo Lake, which provides new insights for studying the relationship between environmental factors and the bacterial community distribution of freshwater ecosystems, in addition to also providing a theoretical basis for the environmental monitoring and protection of the lake.

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