干旱区生态环境知识资源中心(Arid): Microbial activity in Martian analog soils after ionizing radiation: implications for the preservation of subsurface life on Mars

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DOI	10.3934/microbiol.2018.3.541
	Microbial activity in Martian analog soils after ionizing radiation: implications for the preservation of subsurface life on Mars
	Cheptsov, Vladimir S.; Vorobyova, Elena A.; Osipov, George A.; Manucharova, Natalia A.; Polyanskaya, Lubov' M.; Gorlenko, Mikhail V.; Pavlov, Anatoli K.; Rosanova, Marina S.; Lomasov, Vladimir N.
通讯作者	Cheptsov, VS
来源期刊	AIMS MICROBIOLOGY
ISSN	2471-1888
出版年	2018
卷号	4 期号:3 页码:541-562
英文摘要	At present, the surface of Mars is affected by a set of factors that can prevent the survival of Earth-like life. However, the modern concept of the evolution of the planet assumes the existence more favorable for life climate in the past. If in the past on Mars had formed a biosphere, similar to the one that originated in the early Earth, it is supposed that it is preserved till now in anabiotic state in the bowels of the planet, like microbial communities inhabiting the ancient permafrost of Arctic and Antarctic. In the conditions of modern Martian regolith, this relic life seems to be deprived of the possibility of damage reparation (or these processes occur on a geological time scale), and ionizing radiation should be considered the main factor inhibiting such anabiotic life. In the present study, we studied soil samples, selected in two different extreme habitats of the Earth: ancient permafrost from the Dry Valleys of Antarctica and Xerosol soil from the mountain desert in Morocco, gamma-irradiated with 40 kGy dose at low pressure (1 Torr) and low temperature (-50 degrees C). Microbial communities inhabiting these samples showed in situ high resistance to the applied effects, retained high number of viable cells, metabolic activity, and high biodiversity. Based on the results, it is assumed that the putative biosphere could be preserved in the dormant state for at least 500 thousand years and 8 million years in the surface layer of Mars regolith and at 5 m depth, respectively, at the current level of ionizing radiation intensity.
英文关键词	astrobiology Mars gamma radiation microbial communities radioresistance
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	ESCI
WOS记录号	WOS:000442463600011
WOS关键词	TRANSIENT LIQUID WATER ; DEINOCOCCUS-RADIODURANS ; RESISTANT BACTERIA ; GROWTH ; TEMPERATURE ; PERMAFROST ; SURVIVAL ; COLD ; ICE ; MICROORGANISMS
WOS类目	Microbiology
WOS研究方向	Microbiology
Scopus学科分类	Russian Acad Sci, Space Res Inst, Moscow, Russia.
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332960
作者单位	[Cheptsov, Vladimir S.; Vorobyova, Elena A.; Manucharova, Natalia A.; Polyanskaya, Lubov' M.; Gorlenko, Mikhail V.; Rosanova, Marina S.] Lomonosov Moscow State Univ, Soil Sci Fac, Moscow, Russia; [Cheptsov, Vladimir S.; Vorobyova, Elena A.] Russian Acad Sci, Space Res Inst, Moscow, Russia; [Osipov, George A.] ND Zelinskii Inst Organ Chem, Int Analyt Ctr, Interlab, Moscow, Russia; [Pavlov, Anatoli K.] Russian Acad Sci, Ioffe Phys Tech Inst, St Petersburg, Russia; [Lomasov, Vladimir N.] Peter Great St Petersburg State Polytech Univ, St Petersburg, Russia
推荐引用方式 GB/T 7714	Cheptsov, Vladimir S.,Vorobyova, Elena A.,Osipov, George A.,et al. Microbial activity in Martian analog soils after ionizing radiation: implications for the preservation of subsurface life on Mars[J],2018,4(3):541-562.
APA	Cheptsov, Vladimir S..,Vorobyova, Elena A..,Osipov, George A..,Manucharova, Natalia A..,Polyanskaya, Lubov' M..,...&Lomasov, Vladimir N..(2018).Microbial activity in Martian analog soils after ionizing radiation: implications for the preservation of subsurface life on Mars.AIMS MICROBIOLOGY,4(3),541-562.
MLA	Cheptsov, Vladimir S.,et al."Microbial activity in Martian analog soils after ionizing radiation: implications for the preservation of subsurface life on Mars".AIMS MICROBIOLOGY 4.3(2018):541-562.