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Microorganisms in the Accreted Ice of Lake Vostok, Antarctica
Abstract
Analysis of a portion of Vostok ice core number 5G, which is thought to contain frozen water derived from Lake Vostok, Antarctica (a body of liquid water located beneath about 4 kilometers of glacial ice), revealed between 2 × 10 2 and 3 × 10 2 bacterial cells per milliliter and low concentrations of potential growth nutrients. Lipopolysaccharide (a Gram-negative bacterial cell biomarker) was also detected at concentrations consistent with the cell enumeration data, which suggests a predominance of Gram-negative bacteria. At least a portion of the microbial assemblage was viable, as determined by the respiration of carbon-14–labeled acetate and glucose substrates during incubations at 3°C and 1 atmosphere. These accreted ice data suggest that Lake Vostok may contain viable microorganisms.
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Cited by
Hodson, A., Anesio, A. M., Tranter, M., Fountain, A., Osborn, M., Priscu, J., Laybourn-Parry, J., & Sattler, B. (2008) · Ecological Monographs · doi:10.1890/07-0187.1 · Cited by 528
Bacterial Activity at −2 to −20°C in Arctic Wintertime Sea Ice
Junge, K., Eicken, H., & Deming, J. W. (2004) · Applied and Environmental Microbiology · doi:10.1128/aem.70.1.550-557.2004 · Cited by 417
Microbial Life beneath a High Arctic Glacier
Skidmore, M. L., Foght, J. M., & Sharp, M. J. (2000) · Applied and Environmental Microbiology · doi:10.1128/aem.66.8.3214-3220.2000 · Cited by 373
Extremophiles and the Search for Extraterrestrial Life
Cavicchioli, R. (2002) · Astrobiology · doi:10.1089/153110702762027862 · Cited by 232
Mottl, M. J., Glazer, B. T., Kaiser, R. I., & Meech, K. J. (2007) · Geochemistry · doi:10.1016/j.chemer.2007.09.002 · Cited by 117
Metadata
- Authors
- Karl, D. M., Bird, D. F., Björkman, K., Houlihan, T., Shackelford, R., & Tupas, L.
- Venue
- Science
- Published
- 1999-12-10
- Volume
- 286
- Issue
- 5447
- Pages
- 2144-2147
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1981099026
- Cited by
- 363
- References
- 0
- FWCI
- 19.06
- Type
- journal article
- Language
- en
- Open access
- closed
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- Karl, D. M., Bird, D. F., Björkman, K., Houlihan, T., Shackelford, R., & Tupas, L. (1999). Microorganisms in the Accreted Ice of Lake Vostok, Antarctica. Science. https://doi.org/10.1126/science.286.5447.2144
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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