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

doi:10.1002/lno.12462

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 深海科学研究部 > 深海地质与地球化学研究室

	Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling
	Zhang, Zhe-Xuan 1,2; Li, Jiwei 1; Lu, Hongxuan 3; Yang, Huan 4; Zhang, Yige 5; Tang, Yongjie 1; Fu, Meiyan 6; Peng, Xiaotong 1
刊名	LIMNOLOGY AND OCEANOGRAPHY
	2023-11-20
页码	17
ISSN号	0024-3590
DOI	10.1002/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.
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关键词	CARBON ISOTOPIC COMPOSITION ; EOCENE THERMAL MAXIMUM ; MEMBRANE-LIPIDS ; LAKE-SEDIMENTS ; SURFACE SOILS ; PALEOCENE ; RIVER ; SEA ; TEMPERATURE ; CLIMATE
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	WILEY
WOS记录号	WOS:001104715100001
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
内容类型	期刊论文
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
通讯作者	Li, Jiwei; Peng, Xiaotong
作者单位	1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya, Peoples R China 2.Sorbonne Univ, CNRS, EPHE, UMR METIS,PSL, Paris, France 3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 4.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Hubei Key Lab Crit Zone Evolut, Wuhan, Peoples R China 5.Texas A&M Univ, Dept Oceanog, College Stn, TX USA 6.Chengdu Univ Technol, Coll Energy, Chengdu, 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.