Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1089/ast.2009.0351 |
Laser-Induced Fluorescence Emission (LIFE): In Situ Nondestructive Detection of Microbial Life in the Ice Covers of Antarctic Lakes | |
Storrie-Lombardi, Michael C.1; Sattler, Birgit2 | |
通讯作者 | Storrie-Lombardi, Michael C. |
来源期刊 | ASTROBIOLOGY
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ISSN | 1531-1074 |
EISSN | 1557-8070 |
出版年 | 2009 |
卷号 | 9期号:7页码:659-672 |
英文摘要 | Laser-induced fluorescence emission (L.I.F.E.) images were obtained in situ following 532 nm excitation of cryoconite assemblages in the ice covers of annual and perennially frozen Antarctic lakes during the 2008 Tawani International Expedition to Schirmacher Oasis and Lake Untersee in Dronning Maud Land, Antarctica. Laser targeting of a single millimeter-scale cryoconite results in multiple neighboring excitation events secondary to ice/air interface reflection and refraction in the bubbles surrounding the primary target. Laser excitation at 532 nm of cyanobacteria-dominated assemblages produced red and infrared autofluorescence activity attributed to the presence of phycoerythrin photosynthetic pigments. The method avoids destruction of individual target organisms and does not require the disruption of either the structure of the microbial community or the surrounding ice matrix. L. I. F. E. survey strategies described may be of interest for orbital monitoring of photosynthetic primary productivity in polar and alpine glaciers, ice sheets, snow, and lake ice of Earth’s cryosphere. The findings open up the possibility of searching from either a rover or from orbit for signs of life in the polar regions of Mars and the frozen regions of exoplanets in neighboring star systems. |
英文关键词 | Cryosphere Ice Mars Photosynthesis Psychrophiles |
类型 | Article |
语种 | 英语 |
国家 | USA ; Austria |
收录类别 | SCI-E |
WOS记录号 | WOS:000270134600006 |
WOS关键词 | BIOLOGICAL-MATERIALS ; RAMAN-SPECTROSCOPY ; CRYOCONITE HOLES ; EAST ANTARCTICA ; SNOWBALL EARTH ; FRESH-WATER ; GLACIER ; SYNECHOCOCCUS ; CYANOBACTERIA ; COMMUNITIES |
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/2XILL650/159844 |
作者单位 | 1.Kinohi Inst, Pasadena, CA 91101 USA; 2.Univ Innsbruck, Inst Ecol, A-6020 Innsbruck, Austria |
推荐引用方式 GB/T 7714 | Storrie-Lombardi, Michael C.,Sattler, Birgit. Laser-Induced Fluorescence Emission (LIFE): In Situ Nondestructive Detection of Microbial Life in the Ice Covers of Antarctic Lakes[J],2009,9(7):659-672. |
APA | Storrie-Lombardi, Michael C.,&Sattler, Birgit.(2009).Laser-Induced Fluorescence Emission (LIFE): In Situ Nondestructive Detection of Microbial Life in the Ice Covers of Antarctic Lakes.ASTROBIOLOGY,9(7),659-672. |
MLA | Storrie-Lombardi, Michael C.,et al."Laser-Induced Fluorescence Emission (LIFE): In Situ Nondestructive Detection of Microbial Life in the Ice Covers of Antarctic Lakes".ASTROBIOLOGY 9.7(2009):659-672. |
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