Arid
DOI10.3389/fmicb.2019.00069
Subsurface Microbial Habitats in an Extreme Desert Mars-Analog Environment
Warren-Rhodes, Kimberley A.1,2; Lee, Kevin C.3; Archer, Stephen D. J.3; Cabrol, Nathalie1,2; Ng-Boyle, Linda4; Wettergreen, David5; Zacny, Kris6; Pointing, Stephen B.7,8; Chong, Guillermo9; Demargasso, Cecilia9; Foil, Greydon10; Tate, Christopher Gayle11; Hare, Trent12; Lacap-Bugler, Donnabella C.13; Moersch, Jeff11; Tanaka, Ken12; Tebes, Cinthya9; Vijayarangan, Srinivasan14; Wagner, Michael10; Wang, Allan15; Wei, Jie15
通讯作者Pointing, Stephen B.
来源期刊FRONTIERS IN MICROBIOLOGY
ISSN1664-302X
出版年2019
卷号10
英文摘要Sediments in the hyper-arid core of the Atacama Desert are a terrestrial analog to Mars regolith. Understanding the distribution and drivers of microbial life in the sediment may give critical clues on how to search for biosignatures on Mars. Here, we identify the spatial distribution of highly specialized bacterial communities in previously unexplored depth horizons of subsurface sediments to a depth of 800 mm. We deployed an autonomous rover in a mission-relevant Martian drilling scenario with manual sample validation. Subsurface communities were delineated by depth related to sediment moisture. Geochemical analysis indicated soluble salts and minerology that influenced water bio-availability, particularly in deeper sediments. Colonization was also patchy and uncolonized sediment was associated with indicators of extreme osmotic challenge. The study identifies linkage between biocomplexity, moisture and geochemistry in Mars-like sediments at the limit of habitability and demonstrates feasibility of the rover-mounted drill for future Mars sample recovery.
英文关键词Atacama desert soil mars moisture stress soil bacteria
类型Article
语种英语
国家USA ; New Zealand ; Singapore ; Chile
开放获取类型Green Published, gold
收录类别SCI-E
WOS记录号WOS:000459848300001
WOS关键词ATACAMA DESERT ; DRY VALLEY ; DIVERSITY ; LIFE ; SOIL ; ECOLOGY ; LIMITS
WOS类目Microbiology
WOS研究方向Microbiology
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/215782
作者单位1.NASA, Ames Res Ctr, Mountain View, CA USA;
2.SETI Inst, Mountain View, CA USA;
3.Auckland Univ Technol, Sch Sci, Auckland, New Zealand;
4.Univ Washington, Coll Engn, Seattle, WA 98195 USA;
5.Carnegie Mellon Univ, Inst Robot, Pittsburgh, PA 15213 USA;
6.Honeybee Robot Spacecraft Mech Corp, Pasadena, CA USA;
7.Natl Univ Singapore, Yale NUS Coll, Singapore, Singapore;
8.Natl Univ Singapore, Dept Biol Sci, Singapore, Singapore;
9.Univ Catolica Norte, Antofagasta, Chile;
10.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA;
11.Univ Tennessee, Knoxville, TN 37996 USA;
12.US Geol Survey, 959 Natl Ctr, Reston, VA 22092 USA;
13.Auckland Univ Technol, Auckland, New Zealand;
14.Honeybee Robot & Spacecraft Mech Corp, Pasadena, CA USA;
15.Washington Univ, St Louis, MO 63130 USA
推荐引用方式
GB/T 7714
Warren-Rhodes, Kimberley A.,Lee, Kevin C.,Archer, Stephen D. J.,et al. Subsurface Microbial Habitats in an Extreme Desert Mars-Analog Environment[J]. United States Geological Survey,2019,10.
APA Warren-Rhodes, Kimberley A..,Lee, Kevin C..,Archer, Stephen D. J..,Cabrol, Nathalie.,Ng-Boyle, Linda.,...&Wei, Jie.(2019).Subsurface Microbial Habitats in an Extreme Desert Mars-Analog Environment.FRONTIERS IN MICROBIOLOGY,10.
MLA Warren-Rhodes, Kimberley A.,et al."Subsurface Microbial Habitats in an Extreme Desert Mars-Analog Environment".FRONTIERS IN MICROBIOLOGY 10(2019).
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