中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1016/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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