Diagenetic fate of glycerol ethers revealed by two novel isoprenoid hydroxyphytanyl glycerol monoethers and non-isoprenoid alkyl glycerol ethers

doi:10.1016/j.orggeochem.2021.104344

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	Diagenetic fate of glycerol ethers revealed by two novel isoprenoid hydroxyphytanyl glycerol monoethers and non-isoprenoid alkyl glycerol ethers
	Xu, Lanfang 1,5; Guan, Hongxiang1,2,3 ; Su, Zheng1 ; Liu, Lihua 1; Tao, Jun 4
	2022
发表期刊	ORGANIC GEOCHEMISTRY
ISSN	0146-6380
卷号	163 页码:12
通讯作者	Guan, Hongxiang(guanhongxiang@ouc.edu.cn)
摘要	The diagenesis of isoprenoid glycerol ethers and non-isoprenoid mono-and dialkyl glycerol ethers (MAGEs and DAGEs) is important as they are potential markers of microbes involved in the anaerobic oxidation of methane (AOM) in cold seep ecosystems. Here we studied glycerol ethers and the respective diagenetic products in seep carbonates from the Haima cold seeps using MAGE and DAGE abundances and their carbon isotopic compositions. Two novel sn2-/sn3-O-hydroxyphytanyl glycerol monoethers hydroxylated at C-3 of the phytanyl moieties were identified, both being attributed to anaerobic methane-oxidizing archaea (ANME) of the ANME-2 group according to the high ratios of sn2-hydroxyarchaeol relative to archaeol, the extremely low delta C-13 values (from -132 parts per thousand to -120 parts per thousand), and the simultaneously abundant crocetane. Based on the sequential degradation pathway of hydroxyarchaeols, sn2-/sn3-O-hydroxyphytanyl glycerol monoethers likely constitute hydrolysis products of di-hydroxyarchaeol since the C-3 hydroxy-phytanyl side chain is preferentially hydrolysed in the presence of H+. By contrast, the isoprenoidal 3,7,11,15-tetramethylhexadecan-1,3-diol was most likely a hydrolysis product of sn2-/sn3-O-hydroxyarchaeols, di-hydroxyarchaeol, and sn2-/sn3-O-hydroxyphytanyl glycerol monoethers, which is supported by structures with the same skeleton and the similar C-13-depletions. Moreover, a similar relationship was found for MAGEs, DAGEs and the corresponding non-isoprenoid short-chain alcohols. Besides the similar delta C-13 values (from -110 parts per thousand to -100 parts per thousand), the non-isoprenoid short-chain alcohols, MAGEs, and DAGEs, displayed very similar chain lengths and unsaturation patterns, indicating that non-isoprenoid alcohols might be either biosynthetic intermediates or degradation products of MAGEs and DAGEs, dependent on the live status of the lipid-producing microorganisms. Our study highlights the relationship of glycerol ethers and their respective derivatives, which can be used as tracers of ancient microbes preserved in authigenic carbonates and sedimentary rocks.
关键词	Sn2-/sn3-O-hydroxyphytanyl glycerol monoethers 3,7,11,15-tetramethylhexadecan-1,3-diol Alkyl glycerol ether lipids Diagenetic products Seep carbonates South China Sea
DOI	10.1016/j.orggeochem.2021.104344
关键词[WOS]	SULFATE-REDUCING BACTERIA ; ANAEROBIC METHANE OXIDATION ; LIPID BIOMARKER PATTERNS ; INTACT POLAR LIPIDS ; DEEP-SEA SEDIMENTS ; MOSBY MUD VOLCANO ; HAIMA COLD SEEPS ; AUTHIGENIC CARBONATES ; METHANOTROPHIC ARCHAEA ; FORMATION ENVIRONMENTS
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[91958105] ; National Key R&D Program of China[2018YFC0310005] ; Major Program of Guangdong Basic and Applied Research[:2019B030302004]
WOS研究方向	Geochemistry & Geophysics
项目资助者	National Natural Science Foundation of China ; National Key R&D Program of China ; Major Program of Guangdong Basic and Applied Research
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000740551700002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
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.giec.ac.cn/handle/344007/35648
专题	中国科学院广州能源研究所
通讯作者	Guan, Hongxiang
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Ocean Univ China, MOE, Key Lab Submarine Geosci & Prospecting Tech, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China 3.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 4.Guangzhou Marine Geol Survey, Key Lab Marine Mineral Resources, Guangzhou 510075, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Xu, Lanfang,Guan, Hongxiang,Su, Zheng,et al. Diagenetic fate of glycerol ethers revealed by two novel isoprenoid hydroxyphytanyl glycerol monoethers and non-isoprenoid alkyl glycerol ethers[J]. ORGANIC GEOCHEMISTRY,2022,163:12.
APA	Xu, Lanfang,Guan, Hongxiang,Su, Zheng,Liu, Lihua,&Tao, Jun.(2022).Diagenetic fate of glycerol ethers revealed by two novel isoprenoid hydroxyphytanyl glycerol monoethers and non-isoprenoid alkyl glycerol ethers.ORGANIC GEOCHEMISTRY,163,12.
MLA	Xu, Lanfang,et al."Diagenetic fate of glycerol ethers revealed by two novel isoprenoid hydroxyphytanyl glycerol monoethers and non-isoprenoid alkyl glycerol ethers".ORGANIC GEOCHEMISTRY 163(2022):12.