Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1017/S0954102021000122 |
| Spectroscopic detection of microbial colonization in Antarctic sandstone | |
McKay, Christopher P. ; Swayze, Gregg A.; Clark, Roger N.; Kokaly, Raymond F.
| |
| 通讯作者 | McKay, CP (corresponding author), NASA, Ames Res Ctr, Space Sci Div, Moffett Field, CA 94035 USA. |
| 来源期刊 | ANTARCTIC SCIENCE
 |
| ISSN | 0954-1020 |
| EISSN | 1365-2079 |
| 出版年 | 2021 |
| 卷号 | 33期号:3页码:265-272 |
| 英文摘要 | We report infrared reflectance and ultraviolet fluorescence spectra of the surfaces and cleaved side of Beacon Sandstone from Antarctica that harbours a cryptoendolithic microbial community - a photosynthesis-based consortium of algae, lichen and bacteria present a few millimetres below the surface. Chlorophyll absorptions were present in the reflectance spectra of the exposed interior but not on the top or bottom surfaces and their band depths changed < 4% between measurements taken 19 years apart, indicating the stability of the microorganisms when the sample is kept dry. The presence of subsurface organic layers was detected in reflectance at 3.41 mu m on the sample's surface. Fluorescence spectra of the cleaved side showed the blue fluorescence peaks expected from chlorophyll but no 0.65-0.80 mu m peaks seen in fluorescence measurements of green vegetation. A weak fluorescence signal was detectable at the surface of the sample, presumably due to some light leaking into the subsurface through pores or cracks in the goethite coating the sample's surface. Theoretically, this weak fluorescence signal could possibly be observed in rock surfaces broken by erosion or meteor impacts on Mars. Sandstone outcrops have been reported on Mars and detection of organic layers in sandstones there would be of interest. |
| 英文关键词 | cryptoendolithic fluorescence infrared spectroscopy Linnaeus Terrace Mars organics |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000668615200005 |
| WOS关键词 | MCMURDO DRY VALLEYS ; ENDOLITHIC MICROORGANISMS ; BEACON SANDSTONE ; FOSSIL FORMATION ; GALE CRATER ; ROSS DESERT ; COMMUNITIES ; LIFE ; SAMPLE ; ROCKS |
| WOS类目 | Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography ; Geology |
| 来源机构 | United States Geological Survey |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/349473 |
| 作者单位 | [McKay, Christopher P.] NASA, Ames Res Ctr, Space Sci Div, Moffett Field, CA 94035 USA; [Swayze, Gregg A.; Kokaly, Raymond F.] US Geol Survey, MS964 Box,25046 Denver Fed Ctr, Denver, CO 80225 USA; [Clark, Roger N.] Planetary Sci Inst, 1700 East Ft Lowell,Suite 106, Tucson, AZ 85719 USA |
| 推荐引用方式 GB/T 7714 | McKay, Christopher P.,Swayze, Gregg A.,Clark, Roger N.,et al. Spectroscopic detection of microbial colonization in Antarctic sandstone[J]. United States Geological Survey,2021,33(3):265-272. |
| APA | McKay, Christopher P.,Swayze, Gregg A.,Clark, Roger N.,&Kokaly, Raymond F..(2021).Spectroscopic detection of microbial colonization in Antarctic sandstone.ANTARCTIC SCIENCE,33(3),265-272. |
| MLA | McKay, Christopher P.,et al."Spectroscopic detection of microbial colonization in Antarctic sandstone".ANTARCTIC SCIENCE 33.3(2021):265-272. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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