Longitudinal Patterns of Microbial Communities in the Water Diversion Rivers of South-to-North Water Diversion Project,Clean - Soil Air Water

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Longitudinal Patterns of Microbial Communities in the Water Diversion Rivers of South-to-North Water Diversion Project
Clean - Soil Air Water ( IF 1.5 ) Pub Date : 2022-04-24 , DOI: 10.1002/clen.202100303
Wei Cai _{1,

2} , Qiuyun Huang ₁ , Huiyu Li ₁ , Haomiao Cheng ₁ , Yi Li ₂ , Jian Hu ₁

Affiliation

Water diversion rivers are the fundamental transport lines in water diversion projects. The changeable hydrological and physicochemical conditions lead to significant changes in biogeographical characteristics of microbial communities within river catchments. This study gives an insight into longitudinal patterns of the composition and diversity characteristics of microbial communities in water diversion rivers in the East Route of the South-to-North Water Diversion Project using 16S rRNA sequencing. A total of 937 743 microbial sequence reads are obtained and classified into 9178 distinct operational taxonomic units, belonging to 48 phyla and 424 genera, respectively. Along the water diversion line, obvious distribution characteristics of microbial communities could be observed in Actinobacteria, Firmicutes, Exiguobacterium, CL500-29_marine_group, Acinetobacter, and Cloacibacterium. The relative abundance of both Actinobacteria and CL500-29_marine_group increases from the upper rivers in the northern region to the lower rivers in the southern region, while Firmicutes and Exiguobacterium show the opposite trend. Higher microbial diversity is found in the upper rivers of the water diversion line than in the lower rivers. Externally, redundant analysis indicated the spatial shift in microbial community is largely shaped by ammonium, total nitrogen, conductivity, and total phosphorus. Internally, longitudinal construction of the microbial community is mainly affected by species replacement.

中文翻译：

南水北调引水河流微生物群落纵向分布规律

引水河流是引水工程的基本运输线路。多变的水文和物理化学条件导致流域内微生物群落的生物地理特征发生显着变化。本研究利用 16S rRNA 测序深入了解南水北调东线引水河流中微生物群落组成和多样性特征的纵向模式。总共获得了 937 743 个微生物序列读数，并将其分类为 9178 个不同的操作分类单元，分别属于 48 个门和 424 个属。沿引水线，放线菌中微生物群落分布特征明显，厚壁菌门、微小杆菌属、CL500 -29_海洋_组、不动杆菌属和梭菌属。放线菌和CL500 - 29_海洋_群的相对丰度从北部地区的上游河流到南部地区的下游河流增加，而厚壁菌门和微小杆菌呈现相反的趋势。调水线上游河流的微生物多样性高于下游河流。从外部看，冗余分析表明微生物群落的空间变化主要受铵、总氮、电导率和总磷的影响。在内部，微生物群落的纵向构建主要受物种更替的影响。

更新日期：2022-04-24

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