Microorganisms in the Accreted Ice of Lake Vostok, Antarctica

DOI Web Site 被引用文献7件
  • D. M. Karl
    School of Ocean and Earth Science and Technology (SOEST), University of Hawaii, Honolulu, HI 96822, USA.
  • D. F. Bird
    Département des Sciences Biologiques, Université du Quebec à Montreal, Casier Postal 8888, Succursale Centre-Ville, Montreal, QC, Canada, H3C 3P8.
  • K. Björkman
    School of Ocean and Earth Science and Technology (SOEST), University of Hawaii, Honolulu, HI 96822, USA.
  • T. Houlihan
    School of Ocean and Earth Science and Technology (SOEST), University of Hawaii, Honolulu, HI 96822, USA.
  • R. Shackelford
    School of Ocean and Earth Science and Technology (SOEST), University of Hawaii, Honolulu, HI 96822, USA.
  • L. Tupas
    School of Ocean and Earth Science and Technology (SOEST), University of Hawaii, Honolulu, HI 96822, USA.

書誌事項

公開日
1999-12-10
DOI
  • 10.1126/science.286.5447.2144
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p>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<jats:sup>2</jats:sup>and 3 × 10<jats:sup>2</jats:sup>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.</jats:p>

収録刊行物

  • Science

    Science 286 (5447), 2144-2147, 1999-12-10

    American Association for the Advancement of Science (AAAS)

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