Influence of bottom seawater oxygen on archaeal tetraether lipids in sediments: Implications for archaeal lipid-based proxies

doi:10.1016/j.marchem.2022.104138

	Influence of bottom seawater oxygen on archaeal tetraether lipids in sediments: Implications for archaeal lipid-based proxies
	Guo, Jinqiang 1,2,3,4; Yuan, Huamao1,2,3,4,6 ; Song, Jinming1,2,3,4,6 ; Li, Xuegang 1,2,3,4; Duan, Liqin ; Li, Ning 2,3,4,5; Wang, Yingxia 2,4,5
	2022-07-20
发表期刊	MARINE CHEMISTRY
ISSN	0304-4203
卷号	244 页码:11
通讯作者	Yuan, Huamao(yuanhuamao@qdio.ac.cn) ; Song, Jinming(jmsong@qdio.ac.cn)
摘要	Glycerol dibiphytanyl glycerol tetraethers (GDGTs) are important archaeal membrane lipids that widely occur in marine water columns and sediments. Based on its sensitivity to temperature, the paleotemperature index TEX86 was developed and extensively studied. However, GDGTs in sediments are not only affected by their external sources, but also by internal biochemical processes. The effect of bottom water redox conditions on GDGT composition and TEX86 in the surface sediments remains unclear. In this study, field investigations in the eastern China marginal seas were conducted to trace the responses of sedimentary GDGTs to bottom dissolved oxygen (DO). Our results showed that the TEX86 was independent of the DO level. However, the decrease in DO was accompanied by an increase in GDGT Ring Index (RI) and relative abundance of crenarchaeol (Cren) in contrast to the decrease pattern for GDGT-0, suggesting that DO has important effects on the composition of GDGTs but shows limited impact on TEX86 in the study area. These changes were probably driven by archaeal adaptation, shift of community structure and degradation of GDGTs. In addition, strong relationships between DO and RI and between DO and GDGT abundances (i.e., %GDGT-0, GDGT-0/Cren) indicate that these parameters can be used as potential redox proxies for bottom water, especially in relatively stable stratified waters. Further studies coupled with archaeal community are needed to cover more areas to constrain their applicability and driving mechanisms.
关键词	Isoprenoid GDGTs Oxygen TEX86 Redox proxy
DOI	10.1016/j.marchem.2022.104138
收录类别	SCI
语种	英语
资助项目	Key Project of Center for Ocean Mega-Science of the Chinese Academy of Sciences[COMS2019Q12] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050501] ; National Natural Science Foundation of China[42130703] ; National Natural Science Foundation of China[41976037] ; Two-Hundred Talents Plan of Yantai Scholar Project Special Funding ; Shandong Provincial Natural Science Foundation[ZR2020YQ28]
WOS研究方向	Chemistry ; Oceanography
WOS类目	Chemistry, Multidisciplinary ; Oceanography
WOS记录号	WOS:000813381700004
出版者	ELSEVIER
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/179677
专题	海洋生态与环境科学重点实验室
通讯作者	Yuan, Huamao; Song, Jinming
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Publ Technol Serv Ctr, Qingdao, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Guo, Jinqiang,Yuan, Huamao,Song, Jinming,et al. Influence of bottom seawater oxygen on archaeal tetraether lipids in sediments: Implications for archaeal lipid-based proxies[J]. MARINE CHEMISTRY,2022,244:11.
APA	Guo, Jinqiang.,Yuan, Huamao.,Song, Jinming.,Li, Xuegang.,Duan, Liqin.,...&Wang, Yingxia.(2022).Influence of bottom seawater oxygen on archaeal tetraether lipids in sediments: Implications for archaeal lipid-based proxies.MARINE CHEMISTRY,244,11.
MLA	Guo, Jinqiang,et al."Influence of bottom seawater oxygen on archaeal tetraether lipids in sediments: Implications for archaeal lipid-based proxies".MARINE CHEMISTRY 244(2022):11.