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Characteristics and implications of isoprenoid and hydroxy tetraether lipids in hadal sediments of Mariana and Yap Trenches

文献类型：期刊论文

作者Chen, Zhiyan3,4,5; Li, Jiwei2,4; Li, Xinxin1,3; Chen, Shun2,4; Dasgupta, Shamik4; Bai, Shijie4; Ta, Kaiwen2,4; Xu, Hengchao2,4; Du, Mengran2,4; Peng, Xiaotong4
刊名CHEMICAL GEOLOGY
出版日期2020-09-30
卷号551页码:8
ISSN号0009-2541
关键词Hadal zone Membrane lipids Iso-GDGTs OH-GDGTs Paleothermometer Deep-water-dwelling Thaumarchaeota
DOI10.1016/j.chemgeo.2020.119742
英文摘要As one of the least-explored regions on Earth, the hadal zone remains poorly understood in terms of sedimentary organic geochemistry. This study examined the composition of isoprenoid glycerol dialkyl glycerol tetraethers (Iso-GDGTs) and hydroxy GDGTs (OH-GDGTs) in sediment cores with water depths ranging from 5058 to 10,911 m from the Mariana and Yap Trenches. The results showed a higher proportion of GDGT-0 (25-73%, mean = 49%) in the trench Iso-GDGTs pool than those from shallower ocean counterparts (< 5000 m). Properties, including higher values of the [GDGT-2/GDGT-3] ratio (7.17-20.03, mean = 13.02) and the [GDGT-0/Crenarchaeol] ratio (0.49-3.94, mean = 1.48), as well as a dominance of OH-GDGT-0 in the OH-GDGTs, are similar to characteristics observed in other cold deep marine environments rather than tropical shallow ocean. Ring Index decreased with increasing water depth of the sampling sites, corresponding with increased fractional abundance of acyclic Iso-GDGTs and OH-GDGTs. Paleothermometer TEX86 in the surface sediments (> 5000 m) revealed a significant negative linear correlation with water depth (TEX86H: R-2 = 0.89, p < 0.01; TEX86L: R-2 = 0.89, p < 0.01), leading to a bias toward lower proxy-derived temperatures. This is likely due to the increased incorporation of cold- and pressure- adapted species of archaea in dark ocean. Overall, this study provided implications of the extreme water depth effect on the distribution of isoprenoid and hydroxy tetraether lipids, as well as the proxy application in hadal environments.
WOS关键词DIALKYL GLYCEROL TETRAETHERS ; OXYGEN MINIMUM ZONE ; NITROSOPUMILUS MARITIMUS ; AMMONIA OXIDATION ; MEMBRANE-LIPIDS ; WATER-COLUMN ; INTACT POLAR ; ARCHAEAL ; TEMPERATURE ; SEA
资助项目National Key Research and Development Program of China[2017YFC0306604] ; National Natural Science Foundation of China[41576038] ; National Natural Science Foundation of China[41806085] ; National Natural Science Foundation of China[41876050] ; District Cooperation Program from Sanya City, China[2014YD04] ; Youth Innovation Promotion Association CAS ; Shenzhen International Collaborative Research Project[GJHZ20180928155004783] ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0210] ; Shenzhen Key Laboratory of Marine Archaea Geo-Omics, the Southern University of Science and Technology[ZDSYS201802081843490]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000566476700003
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; District Cooperation Program from Sanya City, China ; Youth Innovation Promotion Association CAS ; Shenzhen International Collaborative Research Project ; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Shenzhen Key Laboratory of Marine Archaea Geo-Omics, the Southern University of Science and Technology
源URL[http://ir.idsse.ac.cn/handle/183446/7893]  
专题深海科学研究部_深海地质与地球化学研究室
深海科学研究部_深海生物学研究室_海洋病毒与分子生物学研究组
专家咨询委员会
通讯作者Li, Jiwei; Peng, Xiaotong
作者单位1.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China
3.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen Key Lab Marine Archaea Geoom, Shenzhen 518055, Guangdong, Peoples R China
4.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
5.Harbin Inst Technol, Sch Environm, Harbin 150006, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Zhiyan,Li, Jiwei,Li, Xinxin,et al. Characteristics and implications of isoprenoid and hydroxy tetraether lipids in hadal sediments of Mariana and Yap Trenches[J]. CHEMICAL GEOLOGY,2020,551:8.
APA Chen, Zhiyan.,Li, Jiwei.,Li, Xinxin.,Chen, Shun.,Dasgupta, Shamik.,...&Peng, Xiaotong.(2020).Characteristics and implications of isoprenoid and hydroxy tetraether lipids in hadal sediments of Mariana and Yap Trenches.CHEMICAL GEOLOGY,551,8.
MLA Chen, Zhiyan,et al."Characteristics and implications of isoprenoid and hydroxy tetraether lipids in hadal sediments of Mariana and Yap Trenches".CHEMICAL GEOLOGY 551(2020):8.

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来源：深海科学与工程研究所

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