| Title | Differences in the methanogen community between the nearshore and offshore sediments of the South Yellow Sea |
|---|---|
| Author | Ye Chen1, Yu Zhen2,3,4, Jili Wan5,6,7, Siqi Li2,3,8, Jiayin Liu5,7,9, Guodong Zhang6,7, and Tiezhu Mi2,3,4,7* |
| Address | 1Key Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266071, P. R. China, 2Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, P. R. China, 3Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, P. R. China, 4College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, P. R. China, 5Saline-alkali Tolerant Rice R&D Center, Qingdao 266000, P. R. China, 6Qingdao Empyrean Intellectual Agriculture Group Co., Ltd., Qingdao 266109, P. R. China, 7National Center of Technology Innovation for Saline-alkali Tolerant Rice, Qingdao 266109, P. R. China, 8College of Marine Life Science, Ocean University of China, Qingdao 266003, P. R. China, 9Qingdao Yuance Group Co, Ltd., Qingdao 266000, P. R. China |
| Bibliography | Journal of Microbiology, 60(8),814-822, 2022, |
| DOI | 10.1007/s12275-022-2022-2 |
| Key Words | methanogen community, mcrA gene, high-throughput sequencing, South Yellow Sea, shallow sediments |
| Abstract | 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. |