Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars

Johnson Sarah Stewart; Millan Maeva; Graham Heather; Benison Kathleen C.; Williams Amy J.; McAdam Amy; Knudson Christine A.; Andrejkovicova Slavka; Achilles Cherie

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Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars

机译：短暂酸性盐湖泥滩/沙堆沉积物中的脂质生物标志物：对火星的影响

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Sedimentary strata on Mars often contain a mix of sulfates, iron oxides, chlorides, and phyllosilicates, a mineral assemblage that is unique on Earth to acid brine environments. To help characterize the astrobiological potential of depositional environments with similar minerals present, samples from four naturally occurring acidic salt lakes and adjacent mudflats/sandflats in the vicinity of Norseman, Western Australia, were collected and analyzed. Lipid biomarkers were extracted and quantified, revealing biomarkers from vascular plants alongside trace microbial lipids. The resilience of lipids from dead organic material in these acid saline sediments through the pervasive stages of early diagenesis lends support to the idea that sulfates, in tandem with phyllosilicates and iron oxides, could be a viable target for biomarkers on Mars. To fully understand the astrobiological potential of these depositional environments, additional investigations of organic preservation in ancient acidic saline sedimentary environments are needed.

机译：火星上的沉积地层通常包含硫酸盐，氧化铁，氯化物和页硅酸盐的混合物，这是地球上酸性盐水环境中唯一的一种矿物组合。为了帮助表征存在类似矿物的沉积环境的潜在生物生物学潜力，收集并分析了四个天然酸性盐湖以及西澳大利亚诺斯曼附近相邻的滩涂/沙滩的样品。提取和定量脂质生物标志物，从维管植物中发现生物标志物以及微量微生物脂质。这些酸性盐水沉积物中的死有机物质中脂类的复原力贯穿早期成岩作用的普遍阶段，支持了这样一种观念，即硫酸盐与页硅酸盐和氧化铁一起可能成为火星上生物标记物的可行目标。为了充分了解这些沉积环境的天文生物学潜力，需要对古代酸性盐水沉积环境中有机物的保存进行更多研究。

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来源
《Astrobiology》 |2020年第2期|167-178|共12页
作者
Johnson Sarah Stewart; Millan Maeva; Graham Heather; Benison Kathleen C.; Williams Amy J.; McAdam Amy; Knudson Christine A.; Andrejkovicova Slavka; Achilles Cherie;
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作者单位

Georgetown Univ Dept Biol Regents 511 37th & O St NW Washington DC 20057 USA|Georgetown Univ Program Sci Technol & Int Affairs Washington DC USA;

Georgetown Univ Dept Biol Regents 511 37th & O St NW Washington DC 20057 USA|NASA Goddard Space Flight Ctr Greenbelt MD USA;

NASA Goddard Space Flight Ctr Greenbelt MD USA;

West Virginia Univ Dept Geol & Geog Morgantown WV 26506 USA;

Univ Florida Dept Geol Sci Gainesville FL USA;

NASA Goddard Space Flight Ctr Greenbelt MD USA|Univ Maryland Ctr Res & Explorat Space Sci & Technol College Pk MD 20742 USA;

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收录信息美国《科学引文索引》(SCI);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类
关键词
Astrobiology; Mars; Acid salt lakes; Lipid biomarkers; Biosignatures; Lakes;

机译：天体生物学;火星;酸性盐湖;脂质生物标志物;生物签名;湖泊;

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1. Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars [J] . Nature reviews Cancer . 2020,第2期

机译：血液生物标志物在短暂的酸盐湖Mudflat / Sandflat沉积物：对火星的影响
2. C3/C4 variations in salt-marsh sediments: An application of compound specific isotopic analysis of lipid biomarkers to late Holocene paleoenvironmental research [J] . Tanner BR, Uhle ME, Kelley JT, Organic Geochemistry: A Publication of the International Association of Geochemistry and Cosmochemistry . 2007,第3期

机译：盐沼沉积物中C3 / C4的变化：脂质生物标志物的化合物特异性同位素分析在晚全新世古环境研究中的应用
3. Spatial heterogeneity in fatty acid abundance and composition across surface sediments of Lake Taihu, Eastern China: Implications for the use of lipids in evaluating carbon cycling and burial in lake systems [J] . Zhang Yongdong, Peng Ting, Su Yaling, Catena: An Interdisciplinary Journal of Soil Science Hydrology-Geomorphology Focusing on Geoecology and Landscape Evolution . 2021,第1期

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4. WAVE TRANSFORMATIONS OVER MUDFLAT AND SALTMARSH SURFACES ONTHE UK EAST COAST - IMPLICATIONS FOR MARSH EVOLUTION [C] . I. M(o)ller, T. Spencer Coastal sediments'03: crossing disciplinary boundaries . 2003

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5. C3/C4 variations in high salt marsh sediments: An application of compound specific isotopic analysis of lipid biomarkers to late Holocene paleoclimatic research. [D] . Tanner, Benjamin Ryan. 2005

机译：高盐沼沉积物中C3 / C4的变化：脂质生物标记物的化合物特异性同位素分析在全新世晚期古气候研究中的应用。
6. Microbial Communities in Sediments From Four Mildly Acidic Ephemeral Salt Lakes in the Yilgarn Craton (Australia) – Terrestrial Analogs to Ancient Mars [O] . Joost W. Aerts, Rob J. M. van Spanning, Jessica Flahaut, -1

机译：Yilgarn Craton（澳大利亚）的四个轻度酸性临时盐湖沉积物中的微生物群落–与古代火星的陆地类似物
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机译：伊莱尔顿克拉顿（澳大利亚）的四种温和酸性短暂盐湖中沉积物中的微生物群落 - 古代火星的陆地类似物

Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars

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