干旱区生态环境知识资源中心(Arid): Spatial Variability of Microbial Communities and Salt Distributions Across a Latitudinal Aridity Gradient in the Atacama Desert

Arid

DOI	10.1007/s00248-020-01672-w
	Spatial Variability of Microbial Communities and Salt Distributions Across a Latitudinal Aridity Gradient in the Atacama Desert
	Shen, Jianxun; Wyness, Adam J.; Claire, Mark W.; Zerkle, Aubrey L.
通讯作者	Shen, JX (corresponding author), Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9AL, Fife, Scotland. ; Shen, JX (corresponding author), Univ St Andrews, Ctr Exoplanet Sci, St Andrews KY16 9AL, Fife, Scotland.
来源期刊	MICROBIAL ECOLOGY
ISSN	0095-3628
EISSN	1432-184X
出版年	2021
英文摘要	Over the past 150 million years, the Chilean Atacama Desert has been transformed into one of the most inhospitable landscapes by geophysical changes, which makes it an ideal Mars analog that has been explored for decades. However, a heavy rainfall that occurred in the Atacama in 2017 provides a unique opportunity to study the response of resident extremophiles to rapid environmental change associated with excessive water and salt shock. Here we combine mineral/salt composition measurements, amendment cell culture experiments, and next-generation sequencing analyses to study the variations in salts and microbial communities along a latitudinal aridity gradient of the Atacama Desert. In addition, we examine the reshuffling of Atacama microbiomes after the rainfall event. Analysis of microbial community composition revealed that soils within the southern arid desert were consistently dominated by Actinobacteria, Chloroflexi, Proteobacteria, Firmicutes, Bacteroidetes, Gemmatimonadetes, Planctomycetes, and Acidobacteria, and Verrucomicrobia. Intriguingly, the hyperarid microbial consortia exhibited a similar pattern to the more southern desert. Salts at the shallow subsurface were dissolved and leached down to a deeper layer, challenging indigenous microorganisms with the increasing osmotic stress. Microbial viability was found to change with aridity and rainfall events. This study sheds light on the structure of xerotolerant, halotolerant, and radioresistant microbiomes from the hyperarid northern desert to the less arid southern transition region, as well as their response to changes in water availability.
英文关键词	Atacama microbiome Function prediction Extremophiles Osmotic stress Salt amendments
类型	Article ; Early Access
语种	英语
开放获取类型	Green Published, Other Gold
收录类别	SCI-E
WOS记录号	WOS:000607328900001
WOS关键词	HYPERARID CORE ; DEINOCOCCUS-RADIODURANS ; LIQUID WATER ; GALE CRATER ; DRY LIMIT ; SOIL ; LIFE ; DIVERSITY ; MARS ; BACTERIA
WOS类目	Ecology ; Marine & Freshwater Biology ; Microbiology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352390
作者单位	[Shen, Jianxun; Claire, Mark W.; Zerkle, Aubrey L.] Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9AL, Fife, Scotland; [Shen, Jianxun; Claire, Mark W.; Zerkle, Aubrey L.] Univ St Andrews, Ctr Exoplanet Sci, St Andrews KY16 9AL, Fife, Scotland; [Wyness, Adam J.] Univ St Andrews, Sch Biol, Scottish Oceans Inst, Sediment Ecol Res Grp, St Andrews KY16 8LB, Fife, Scotland; [Wyness, Adam J.] Rhodes Univ, Dept Zool & Entomol, Coastal Res Grp, ZA-6139 Grahamstown, South Africa
推荐引用方式 GB/T 7714	Shen, Jianxun,Wyness, Adam J.,Claire, Mark W.,et al. Spatial Variability of Microbial Communities and Salt Distributions Across a Latitudinal Aridity Gradient in the Atacama Desert[J],2021.
APA	Shen, Jianxun,Wyness, Adam J.,Claire, Mark W.,&Zerkle, Aubrey L..(2021).Spatial Variability of Microbial Communities and Salt Distributions Across a Latitudinal Aridity Gradient in the Atacama Desert.MICROBIAL ECOLOGY.
MLA	Shen, Jianxun,et al."Spatial Variability of Microbial Communities and Salt Distributions Across a Latitudinal Aridity Gradient in the Atacama Desert".MICROBIAL ECOLOGY (2021).