Arid
DOI10.1089/ast.2012.0956
Acidophilic Halophilic Microorganisms in Fluid Inclusions in Halite from Lake Magic, Western Australia
Conner, Amber J.1; Benison, Kathleen C.2
通讯作者Benison, Kathleen C.
来源期刊ASTROBIOLOGY
ISSN1531-1074
EISSN1557-8070
出版年2013
卷号13期号:9页码:850-860
英文摘要

Lake Magic is one of the most extreme of hundreds of ephemeral acid-saline lakes in southern Western Australia. It has pH as low as 1.7, salinity as high as 32% total dissolved solids, temperatures ranging from 0 degrees C to 50 degrees C, and an unusually complex aqueous composition. Optical petrography, UV-vis petrography, and laser Raman spectrometry were used to detect microorganisms and organic compounds within primary fluid inclusions in modern bedded halite from Lake Magic. Rare prokaryotes appear as 1-3m, bright cocci that fluoresce green with UV-vis illumination. Dimpled, 5-7m yellow spherules that fluoresce blue with UV-vis illumination are interpreted as Dunaliella algae. Yellow-orange beta-carotene crystals, globules, and coatings are characterized by orange-red fluorescence and three distinct Raman peaks. Because acid saline lakes are good Mars analogues, the documentation of prokaryotes, eukaryotes, and organic compounds preserved in the halite here has implications for the search for life on Mars. Missions to Mars should incorporate such in situ optical and chemical examination of martian evaporites for possible microorganisms and/or organic compounds in fluid inclusions.


英文关键词Acid Extremophiles Western Australia Fluid inclusions Lake Magic Dunaliella
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000324534100005
WOS关键词ACID-SALINE LAKES ; SALT DEPOSITS ; ANCIENT HALITE ; RAMAN-SPECTROSCOPY ; BRINE INCLUSIONS ; ATACAMA DESERT ; DEATH-VALLEY ; MARS ; LIFE ; HALOBACTERIA
WOS类目Astronomy & Astrophysics ; Biology ; Geosciences, Multidisciplinary
WOS研究方向Astronomy & Astrophysics ; Life Sciences & Biomedicine - Other Topics ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175951
作者单位1.Cent Michigan Univ, Dept Earth & Atmospher Sci, Mt Pleasant, MI 48859 USA;
2.W Virginia Univ, Dept Geol & Geog, Morgantown, WV 26506 USA
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GB/T 7714
Conner, Amber J.,Benison, Kathleen C.. Acidophilic Halophilic Microorganisms in Fluid Inclusions in Halite from Lake Magic, Western Australia[J],2013,13(9):850-860.
APA Conner, Amber J.,&Benison, Kathleen C..(2013).Acidophilic Halophilic Microorganisms in Fluid Inclusions in Halite from Lake Magic, Western Australia.ASTROBIOLOGY,13(9),850-860.
MLA Conner, Amber J.,et al."Acidophilic Halophilic Microorganisms in Fluid Inclusions in Halite from Lake Magic, Western Australia".ASTROBIOLOGY 13.9(2013):850-860.
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