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      Microbial Community Composition and Function in Sediments from the Pearl River Mouth Basin

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          Abstract

          This study was conducted to characterize the diversity and function of microbial communities in marine sediments of the Pearl River Mouth Basin (PRMB) in the South China Sea. The results showed that the bacterial and archaeal communities varied greatly with depth. Proteobacteria in bacterial communities and Nitrososphaeria and Woesearchaeota in archaeal communities were dominant in the shallow sediments (1–40 cm), while Chloroflexi in bacterial communities and Bathyarchaeia in archaeal communities were dominant in the deep sediments (50–200 cm). Regarding ecological functions based on the metatranscriptomic data, genes involved in various pathways of nitrogen metabolism and sulfur metabolism were observed in the tested sediment samples. Metagenomic analysis revealed that Proteobacteria contribute the most to nearly all genes involved in nitrogen and sulfur metabolism. Moreover, Thaumarchaeota contribute the most to certain genes involved in nitrification, denitrification and assimilatory sulfate reduction pathways. The most abundant bacterial genus, Candidatus Scalindua, is crucial for nitrification, dissimilatory nitrate reduction, denitrification and assimilatory sulfate reduction pathways.

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          Author and article information

          Journal
          JOUC
          Journal of Ocean University of China
          Science Press and Springer (China )
          1672-5182
          10 July 2020
          01 August 2020
          : 19
          : 4
          : 941-953
          Affiliations
          1College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China
          2Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
          3Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, China
          4College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
          Author notes
          *Corresponding author: ZHEN Yu, E-mail: zhenyu@ 123456ouc.edu.cn
          Article
          s11802-020-4225-7
          10.1007/s11802-020-4225-7
          Copyright © Ocean University of China, Science Press and Springer-Verlag GmbH Germany 2020.

          The copyright to this article, including any graphic elements therein (e.g. illustrations, charts, moving images), is hereby assigned for good and valuable consideration to the editorial office of Journal of Ocean University of China, Science Press and Springer effective if and when the article is accepted for publication and to the extent assignable if assignability is restricted for by applicable law or regulations (e.g. for U.S. government or crown employees).

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          Self URI (journal-page): https://www.springer.com/journal/11802

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