4.5 Article

Longitudinal Patterns of Microbial Communities in the Water Diversion Rivers of South-to-North Water Diversion Project

期刊

CLEAN-SOIL AIR WATER
卷 50, 期 7, 页码 -

出版社

WILEY
DOI: 10.1002/clen.202100303

关键词

composition characteristics; longitudinal patterns; microbial community; South-to-North Water Diversion Project; water diversion rivers

资金

  1. National Natural Science Foundation of China [51909229, 42177365]
  2. Yangzhou Lvyangjinfeng Talent Program
  3. Open Research Fund Program of Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education of Hohai University
  4. National Key Research and Development Program of China [2019YFC0408300]
  5. Fundamental Research Funds for the Central Universities [B210202054]
  6. Six Talent Peaks Project in Jiangsu Province [2016-JNHB-007]
  7. 333 Talent Project Foundation of Jiangsu Province
  8. Priority Academic Program Development of Jiangsu Higher Education Institutions
  9. Top-Notch Academic Programs Project of Jiangsu Higher Education Institutions
  10. Science and Technology Innovation Fund for College Students of Yangzhou University

向作者/读者索取更多资源

This study analyzed the longitudinal distribution characteristics of microbial communities in water diversion rivers of the East Route of the South-to-North Water Diversion Project using 16S rRNA sequencing. The results showed obvious distribution patterns of microbial communities along the water diversion line. External factors such as ammonium, total nitrogen, conductivity, and total phosphorus had significant impacts on the spatial variation of microbial communities, while species replacement mainly affected the longitudinal construction of microbial communities.
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.

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