Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1038/s41598-018-35051-w |
Unprecedented rains decimate surface microbial communities in the hyperarid core of the Atacama Desert | |
Azua-Bustos, A.1,2; Fairen, A. G.1,3; Gonzalez-Silva, C.4; Ascaso, C.5; Carrizo, D.1; Fernandez-Martinez, M. A.1; Fernandez-Sampedro, M.1; Garcia-Descalzo, L.1; Garcia-Villadangos, M.1; Martin-Redondo, M. P.1; Sanchez-Garcia, L.1; Wierzchos, J.5; Parro, V1 | |
通讯作者 | Azua-Bustos, A. ; Fairen, A. G. |
来源期刊 | SCIENTIFIC REPORTS
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ISSN | 2045-2322 |
出版年 | 2018 |
卷号 | 8 |
英文摘要 | The hyperarid core of the Atacama Desert, the driest and oldest desert on Earth, has experienced a number of highly unusual rain events over the past three years, resulting in the formation of previously unrecorded hypersaline lagoons, which have lasted several months. We have systematically analyzed the evolution of the lagoons to provide quantitative field constraints of large-scale impacts of the rains on the local microbial communities. Here we show that the sudden and massive input of water in regions that have remained hyperarid for millions of years is harmful for most of the surface soil microbial species, which are exquisitely adapted to survive with meager amounts of liquid water, and quickly perish from osmotic shock when water becomes suddenly abundant. We found that only a handful of bacteria, remarkably a newly identified species of Halomonas, remain metabolically active and are still able to reproduce in the lagoons, while no archaea or eukaryotes were identified. Our results show that the already low microbial biodiversity of extreme arid regions greatly diminishes when water is supplied quickly and in great volumes. We conclude placing our findings in the context of the astrobiological exploration of Mars, a hyperarid planet that experienced catastrophic floodings in ancient times. |
类型 | Article |
语种 | 英语 |
国家 | Spain ; Chile ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000449767900042 |
WOS关键词 | NITRATE DEPOSITS ; MARS ; CHILE ; MICROORGANISMS ; HABITABILITY ; MOISTURE ; BACTERIA ; ORIGIN ; FAMILY ; GENUS |
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/2XILL650/213113 |
作者单位 | 1.Ctr Astrobiol CSIC INTA, Madrid 28850, Spain; 2.Univ Autonoma Chile, Fac Ciencias Salud, Inst Ciencias Biomed, Santiago, Chile; 3.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA; 4.Univ Tarapaca, Fac Ciencias, Arica, Chile; 5.Museo Nacl Ciencias Nat CSIC, Madrid 28006, Spain |
推荐引用方式 GB/T 7714 | Azua-Bustos, A.,Fairen, A. G.,Gonzalez-Silva, C.,et al. Unprecedented rains decimate surface microbial communities in the hyperarid core of the Atacama Desert[J],2018,8. |
APA | Azua-Bustos, A..,Fairen, A. G..,Gonzalez-Silva, C..,Ascaso, C..,Carrizo, D..,...&Parro, V.(2018).Unprecedented rains decimate surface microbial communities in the hyperarid core of the Atacama Desert.SCIENTIFIC REPORTS,8. |
MLA | Azua-Bustos, A.,et al."Unprecedented rains decimate surface microbial communities in the hyperarid core of the Atacama Desert".SCIENTIFIC REPORTS 8(2018). |
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