Effect of different types of anthropogenic pollution on the bacterial community of urban rivers

文献类型： 外文期刊

第一作者： Zhang, Lei

作者： Zhang, Lei;Cheng, Yu;Zhou, Yi;Lu, Wenxuan;Li, Jing

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关键词： anthropogenically contaminated; co-occurrence patterns; functional genus; microbial community

期刊名称：WATER ENVIRONMENT RESEARCH （ 影响因子：1.946； 五年影响因子：1.814 ）

ISSN： 1061-4303

年卷期： 2021 年 93 卷 8 期

页码：

收录情况： SCI

摘要： The health of urban rivers is threatened by multiple anthropogenic stressors. Bacterial communities in rivers can quickly respond to different types of polluted environments, making them useful for water quality assessments and predictive insights. However, research on river bacterial communities has largely ignored interactions between these communities. Here, 16S rRNA amplicon sequencing analysis is used to comprehensively analyze the bacterial communities in the water and sediments in different types of anthropogenically impacted urban river. The results show that distinct differences occur in the bacterial communities in the river sediment and water with different pollution types. The changes in the bacterial communities in sediments were more pronounced than those in the water. A modular analysis further showed that the microbial co-occurrence network under different types of pollution had a nonrandom modular structure, and this structure was mainly driven by classification correlation and bacterial function. Genes identified for nitrogen cycling in all the river water and sediment samples included major functional genes for nitrogen fixation, assimilatory nitrogen reduction, nitrification, denitrification, and ammonification. Carbon degradation genes were mainly observed in the carbon cycle. Taken together, the above findings provide further insights into microbial communities in urban river ecosystems under anthropogenic contamination. (c) 2021 Water Environment Federation

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