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Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling

文献类型：期刊论文

作者Zhang, Zhe-Xuan5,6; Li, Jiwei6; Lu, Hongxuan4; Yang, Huan3; Zhang, Yige2; Tang, Yongjie6; Fu, Meiyan1; Peng, Xiaotong6
刊名LIMNOLOGY AND OCEANOGRAPHY
出版日期2023-11-20
页码17
ISSN号0024-3590
DOI10.1002/lno.12462
通讯作者Li, Jiwei(lijiwei20025@idsse.ac.cn) ; Peng, Xiaotong(xtpeng@idsse.ac.cn)
英文摘要Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial lipids that can be preserved in sedimentary archives for tens of millions of years and are ubiquitous in diverse environments, including cold seep systems. Their potential implications for detecting methane activity in deep time are, however, hampered by the multiple sources of brGDGTs in cold seeps and the lack of evidence of their stable carbon isotopes. Here, we show that brGDGTs in cold seeps are characterized by depleted stable carbon isotopic compositions of the alkyl moieties (delta 13C = -32.9 parts per thousand to -82.7 parts per thousand), indicating a methane metabolizing community origin, which is supported by the association between 16S rRNA genes and brGDGTs. We further identify unique seep-derived brGDGT signals from the global published dataset by a tree-based machine-learning algorithm. This trained model, named light gradient-boosting machine classification for paleoSEEP (GBM_SEEP), is further applied on a paleorecord across the Paleocene-Eocene Thermal Maximum (PETM), which suggests potential methane emission events during the PETM recovery phase. Collectively, our study links brGDGT production in cold seeps with methane metabolizing communities and provides a potential strategy to capture significant methane emission events using the machine-learning model, which warrants further investigation.
WOS关键词CARBON ISOTOPIC COMPOSITION ; EOCENE THERMAL MAXIMUM ; MEMBRANE-LIPIDS ; LAKE-SEDIMENTS ; SURFACE SOILS ; PALEOCENE ; RIVER ; SEA ; TEMPERATURE ; CLIMATE
资助项目Y. Cao and W. Sheng (Institute of Earth Environment, Chinese Academy of Sciences) are acknowledged for their assistance with GC-C-IRMS analysis. Y. Li (Guangzhou Institute of Geochemistry, Chinese Academy of Sciences) is acknowledged for GC-MS analysis. Th ; W. Sheng (Institute of Earth Environment, Chinese Academy of Sciences)[2022YFC2805500] ; National Key Research and Development Program of China[42176072] ; National Key Research and Development Program of China[41876050] ; National Natural Science Foundation of China
WOS研究方向Marine & Freshwater Biology ; Oceanography
语种英语
WOS记录号WOS:001104715100001
出版者WILEY
资助机构Y. Cao and W. Sheng (Institute of Earth Environment, Chinese Academy of Sciences) are acknowledged for their assistance with GC-C-IRMS analysis. Y. Li (Guangzhou Institute of Geochemistry, Chinese Academy of Sciences) is acknowledged for GC-MS analysis. Th ; W. Sheng (Institute of Earth Environment, Chinese Academy of Sciences) ; National Key Research and Development Program of China ; National Natural Science Foundation of China
源URL[http://ir.idsse.ac.cn/handle/183446/10670]  
专题深海科学研究部_深海地质与地球化学研究室
专家咨询委员会
通讯作者Li, Jiwei; Peng, Xiaotong
作者单位1.Chengdu Univ Technol, Coll Energy, Chengdu, Peoples R China
2.Texas A&M Univ, Dept Oceanog, College Stn, TX USA
3.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Hubei Key Lab Crit Zone Evolut, Wuhan, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
5.Sorbonne Univ, CNRS, EPHE, UMR METIS,PSL, Paris, France
6.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Zhe-Xuan,Li, Jiwei,Lu, Hongxuan,et al. Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling[J]. LIMNOLOGY AND OCEANOGRAPHY,2023:17.
APA Zhang, Zhe-Xuan.,Li, Jiwei.,Lu, Hongxuan.,Yang, Huan.,Zhang, Yige.,...&Peng, Xiaotong.(2023).Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling.LIMNOLOGY AND OCEANOGRAPHY,17.
MLA Zhang, Zhe-Xuan,et al."Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling".LIMNOLOGY AND OCEANOGRAPHY (2023):17.

入库方式： OAI收割

来源：深海科学与工程研究所

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