干旱区生态环境知识资源中心(Arid): Detection of Microorganisms and Metabolism in Dune Sand of a Low Organic Content

Arid

DOI	10.1029/2021JG006404
	Detection of Microorganisms and Metabolism in Dune Sand of a Low Organic Content
	Rychert, Krzysztof; Wink, Lisa; Blohs, Marcus; Kumpitsch, Christina; Neumann, Charlotte; Moissl-Eichinger, Christine; Wielgat-Rychert, Magdalena
通讯作者	Rychert, K (corresponding author), Pomeranian Univ Slupsk, Inst Biol & Earth Sci, Slupsk, Poland.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
EISSN	2169-8961
出版年	2021
卷号	126 期号:10
英文摘要	The main goal of astrobiological studies is the search for life beyond Earth. Developing life detection methods requires test locations that have similar environmental conditions to extraterrestrial sites or that simply have low organism abundances. In this study, we describe dune sand of a low organic matter content (0.11%) collected from a national park frequented by few people. It is located in temperate zone. We hypothesized that dune sand is characterized by the low abundance of microorganisms and metabolic rates that could be compared to analogs of extraterrestrial environments like the Antarctic McMurdo Dry Valleys or the Atacama Desert. Measurements of CO2 efflux and ATP concentration demonstrated that hydrating dune sand with sterile distilled water initiated a short period of substantial microbial metabolic activity that lasted from 4 to 5 days. The maximum CO2 efflux was 100 mgCO(2) m(-2) d(-1), which was low compared to values reported for sandy dunes, deserts and poor soils, including McMurdo Dry Valleys. Microscopic observations demonstrated that the abundance of prokaryotic microorganisms in the dune sand was low at roughly one million per cm(3) of sand and was comparable to the abundance reported from the Atacama Desert. The microbial communities in the dune sand were studied based on 16S rRNA gene analyses. The most prominent bacterial genera were Massilia and Bacillus. Study demonstrated that dune sand sampled from a national park area was as useful for testing life detection methods as are other well-established analogs of extraterrestrial environments.
英文关键词	dune sand carbon dioxide efflux organic matter ATP 16S rRNA
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000711969900012
WOS关键词	BIOLOGICAL SOIL CRUSTS ; CARBON-DIOXIDE ; EMENDED DESCRIPTION ; ATACAMA DESERT ; TAYLOR VALLEY ; SPECIAL-ISSUE ; GALE CRATER ; SP-NOV. ; RESPIRATION ; LIFE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368371
作者单位	[Rychert, Krzysztof; Wielgat-Rychert, Magdalena] Pomeranian Univ Slupsk, Inst Biol & Earth Sci, Slupsk, Poland; [Wink, Lisa; Blohs, Marcus; Kumpitsch, Christina; Neumann, Charlotte; Moissl-Eichinger, Christine] Med Univ Graz, Dept Internal Med, Graz, Austria
推荐引用方式 GB/T 7714	Rychert, Krzysztof,Wink, Lisa,Blohs, Marcus,et al. Detection of Microorganisms and Metabolism in Dune Sand of a Low Organic Content[J],2021,126(10).
APA	Rychert, Krzysztof.,Wink, Lisa.,Blohs, Marcus.,Kumpitsch, Christina.,Neumann, Charlotte.,...&Wielgat-Rychert, Magdalena.(2021).Detection of Microorganisms and Metabolism in Dune Sand of a Low Organic Content.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,126(10).
MLA	Rychert, Krzysztof,et al."Detection of Microorganisms and Metabolism in Dune Sand of a Low Organic Content".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 126.10(2021).