Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 66, Issue 10, Pages 4514-4517Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.66.10.4514-4517.2000
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Large populations (200 to 5,000 cells ml(-1) in snowmelt) of bacteria were present in surface snow and firn from the south pole sampled in January 1999 and 2000. DNA isolated from this snow yielded ribosomal DNA sequences similar to those of several psychrophilic bacteria and a bacterium which aligns closely with members of the genus Deinococcus, an ionizing-radiation- and desiccation-resistant genus. We also obtained evidence of low rates of bacterial DNA and protein synthesis which indicates that the organisms were metabolizing at ambient subzero temperatures (-12 to -17 degrees C).
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