Anaerobic methane oxidation coupled to denitrification is an important potential methane sink in deep-sea cold seeps
文献类型:期刊论文
作者 | Jing, Hongmei1,2; Wang, Ruonan2; Jiang, Qiuyun2; Zhang, Yue2; Peng, Xiaotong2 |
刊名 | SCIENCE OF THE TOTAL ENVIRONMENT |
出版日期 | 2020-12-15 |
卷号 | 748页码:14 |
ISSN号 | 0048-9697 |
关键词 | Biogeochemical cycle Anaerobic methane oxidation Cold seeps |
DOI | 10.1016/j.scitotenv.2020.142459 |
英文摘要 | Microbes play a crucial role in mediating the methane flux in deep-sea cold seep ecosystems, where only methane-related microbes have been well studied, while the whole microbial community and their ecological functions were still largely unknown. Here, we utilized metagenomic data to investigate how the structure and metabolism of microbial community shift in the reduced sediment habitats along the spatial scales. Microbial communities in cold seeps and troughs formed two distinct clades likely driven by environmental factors, such as total sulfur, total phosphate and NO3-, rather than geographical proximity. The predominance of Methanosarcinales reflected a high potential for methane production. In addition to the already well-reported ANME-1/SRB consortia, prevalence of bacterial Methylomirabilis and archaeal Methanoperedens as important performers in the n-damo process with respective of nitrite and nitrate as respective electron acceptor was observed in deep-sea hydrate-bearing regions as well. Aerobic methane oxidization was conducted mainly by type I methanotrophs at Site F (Formosa Ridge), but also via the n-damo process by Methanoperedens and Methylomirabilis in the Haima seep and Xisha Trough, respectively. Based on the high abundance of those denitrifying-dependent methane oxidizers and their related functional genes, we concluded that the previously overlooked n-damo process might be a major methane sink in cold seeps or in gas hydrate-bearing sediments if nitrate is available in the anoxic zones. The signature of isotopic labeling would be essential to confirm the contribution of different anaerobic methane oxidizing pathways in deep-sea cold seep ecosystems. (C) 2020 The Authors. Published by Elsevier B.V. |
WOS关键词 | 16S RIBOSOMAL-RNA ; VERTICAL-DISTRIBUTION ; SEDIMENTS ; BACTERIA ; COMMUNITIES ; DIVERSITY ; ARCHAEAL ; ANAMMOX ; CARBON ; REDUCTION |
资助项目 | National Key Research and Development Program of China[2016YFC0304905] ; National Key Research and Development Program of China[2018YFC0309800] ; Major Research Plan of the National Natural Science Foundation of China[91751116] ; National Natural Science Foundation of China[41776147] |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000581049800134 |
资助机构 | National Key Research and Development Program of China ; Major Research Plan of the National Natural Science Foundation of China ; National Natural Science Foundation of China |
源URL | [http://ir.idsse.ac.cn/handle/183446/7923] |
专题 | 深海科学研究部_深海生物学研究室_海洋微生物分子生态学研究组 研究生部 专家咨询委员会 |
通讯作者 | Jing, Hongmei; Peng, Xiaotong |
作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab, Zhuhai, Peoples R China 2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya, Peoples R China |
推荐引用方式 GB/T 7714 | Jing, Hongmei,Wang, Ruonan,Jiang, Qiuyun,et al. Anaerobic methane oxidation coupled to denitrification is an important potential methane sink in deep-sea cold seeps[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,748:14. |
APA | Jing, Hongmei,Wang, Ruonan,Jiang, Qiuyun,Zhang, Yue,&Peng, Xiaotong.(2020).Anaerobic methane oxidation coupled to denitrification is an important potential methane sink in deep-sea cold seeps.SCIENCE OF THE TOTAL ENVIRONMENT,748,14. |
MLA | Jing, Hongmei,et al."Anaerobic methane oxidation coupled to denitrification is an important potential methane sink in deep-sea cold seeps".SCIENCE OF THE TOTAL ENVIRONMENT 748(2020):14. |
入库方式: OAI收割
来源:深海科学与工程研究所
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