Use of different methods for discovery of ice-entrapped microorganisms in ancient layers of the Antarctic glacier

Details Use of different methods for discovery of ice-entrapped microorganisms in ancient layers of the Antarctic glacier Use of different methods for discovery of ice-entrapped microorganisms in ancient layers of the Antarctic glacier

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004adspr..33.1222a&link_type=abstract

Advances in Space Research, Volume 33, Issue 8, p. 1222-1230.

Biology

1

Ice-Entrapped Microorganisms, Lake Vostok, Antarctic Glacier, Methods For Microorganism Discovery, Astrobiology

Scientific paper

Investigations throughout the thickness of the ice sheet above Lake Vostok show the presence of microorganisms belonging to different well-known taxonomic groups, even in the very ancient horizons near close to floor of the glacier. Different methods were used to search for microorganisms that are rarely found in the deep ancient layers of an ice sheet. Primary investigations tried the usual methods of sowing samples onto different nutrient media, and the result was that only a few microorganisms grew on the media used. Further investigations of the very ancient layers of the ice sheet by radioisotopic, luminescence, and scanning electron microscopy methods at different modifications, revealed the quantity and morphological diversity of the cells of microorganisms that were distributed on the different horizons. Microbiological investigations in the very ancient strata of the Antarctic ice cover, nearest to the bedrock, support the effectiveness of using a combination of different methods to search for signs of life in ancient icy formations, which might play a role in the long-term preservation and transportation of microbial life throughout the Universe.

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