干旱区生态环境知识资源中心(Arid): Inhabited subsurface wet smectites in the hyperarid core of the Atacama Desert as an analog for the search for life on Mars

Arid

DOI	10.1038/s41598-020-76302-z
	Inhabited subsurface wet smectites in the hyperarid core of the Atacama Desert as an analog for the search for life on Mars
	Azua-Bustos, Armando; Fairen, Alberto G.; Gonzalez Silva, Carlos; Carrizo, Daniel; Fernandez-Martinez, Miguel Angel; Arenas-Fajardo, Cristian; Fernandez-Sampedro, Maite; Gil-Lozano, Carolina; Sanchez-Garcia, Laura; Ascaso, Carmen; Wierzchos, Jacek; Rampe, Elizabeth B.
通讯作者	Azua-Bustos, A ; Fairen, AG
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	The modern Martian surface is unlikely to be habitable due to its extreme aridity among other environmental factors. This is the reason why the hyperarid core of the Atacama Desert has been studied as an analog for the habitability of Mars for more than 50 years. Here we report a layer enriched in smectites located just 30 cm below the surface of the hyperarid core of the Atacama. We discovered the clay-rich layer to be wet (a phenomenon never observed before in this region), keeping a high and constant relative humidity of 78% (a(w) 0.780), and completely isolated from the changing and extremely dry subaerial conditions characteristic of the Atacama. The smectite-rich layer is inhabited by at least 30 halophilic species of metabolically active bacteria and archaea, unveiling a previously unreported habitat for microbial life under the surface of the driest place on Earth. The discovery of a diverse microbial community in smectite-rich subsurface layers in the hyperarid core of the Atacama, and the collection of biosignatures we have identified within the clays, suggest that similar shallow clay deposits on Mars may contain biosignatures easily reachable by current rovers and landers.
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000587667000040
WOS关键词	GALE CRATER ; ORGANIC-MATTER ; JEZERO CRATER ; MICROBIAL COLONIZATION ; BACTERIAL COMMUNITIES ; LIPID BIOMARKERS ; CARBON ISOTOPES ; HALITE ROCKS ; SOILS ; DEPOSITS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327413
作者单位	[Azua-Bustos, Armando; Fairen, Alberto G.; Carrizo, Daniel; Fernandez-Sampedro, Maite; Gil-Lozano, Carolina; Sanchez-Garcia, Laura] Ctr Astrobiol CSIC INTA, Madrid 28850, Spain; [Azua-Bustos, Armando] Univ Autonoma Chile, Fac Ciencias Salud, Inst Ciencias Biomed, Santiago, Chile; [Fairen, Alberto G.] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA; [Gonzalez Silva, Carlos] Univ Tarapaca, Fac Ciencias, Arica, Chile; [Fernandez-Martinez, Miguel Angel] McGill Univ, Dept Nat Resource Sci, Montreal, PQ, Canada; [Arenas-Fajardo, Cristian] Atacama Res, Santiago, Chile; [Gil-Lozano, Carolina] Univ Nantes, Lab Planetol & Geodynam, F-44322 Nantes, France; [Ascaso, Carmen; Wierzchos, Jacek] Museo Nacl Ciencias Nat CSIC, Madrid 28006, Spain; [Rampe, Elizabeth B.] NASA, Astromat Res & Explorat Sci Div, Johnson Space Ctr, Houston, TX USA
推荐引用方式 GB/T 7714	Azua-Bustos, Armando,Fairen, Alberto G.,Gonzalez Silva, Carlos,et al. Inhabited subsurface wet smectites in the hyperarid core of the Atacama Desert as an analog for the search for life on Mars[J],2020,10(1).
APA	Azua-Bustos, Armando.,Fairen, Alberto G..,Gonzalez Silva, Carlos.,Carrizo, Daniel.,Fernandez-Martinez, Miguel Angel.,...&Rampe, Elizabeth B..(2020).Inhabited subsurface wet smectites in the hyperarid core of the Atacama Desert as an analog for the search for life on Mars.SCIENTIFIC REPORTS,10(1).
MLA	Azua-Bustos, Armando,et al."Inhabited subsurface wet smectites in the hyperarid core of the Atacama Desert as an analog for the search for life on Mars".SCIENTIFIC REPORTS 10.1(2020).