- Differences in the methanogen community between the nearshore and offshore sediments of the South Yellow Sea
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Ye Chen , Yu Zhen , Jili Wan , Siqi Li , Jiayin Liu , Guodong Zhang , Tiezhu Mi
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J. Microbiol. 2022;60(8):814-822. Published online July 14, 2022
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DOI: https://doi.org/10.1007/s12275-022-2022-2
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 Abstract
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The differences in methanogen abundance and community
composition were investigated between nearshore and offshore
sediments in the South Yellow Sea (SYS). Shannon,
Simpson, and Chao1 indices revealed a higher diversity of
methanogens in the nearshore sediments than in the offshore
sediments. The Mann–Whitney U test demonstrated that the
relative abundance of Methanococcoides was significantly
higher in the offshore sediments, while the relative abundances
of Methanogenium, Methanosarcina, Methanosaeta,
Methanolinea, and Methanomassiliicoccus were significantly
higher in the nearshore sediments (P < 0.05). The abundance
of the mcrA gene in the nearshore sediments was significantly
higher than that in the offshore sediments. Furthermore, a
similar vertical distribution of the methanogen and sulfatereducing
bacteria (SRB) abundances was observed in the SYS
sediments, implying there is potential cooperation between
these two functional microbes in this environment. Finally,
total organic carbon (TOC) was significantly correlated with
methanogen community composition.
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Citations
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