Phylogenetic analysis of bacteria preserved in a permafrost ice wedge for 25,000 years

Appl Environ Microbiol. 2007 Apr;73(7):2360-3. doi: 10.1128/AEM.01715-06. Epub 2007 Feb 9.

Abstract

Phylogenetic analysis of bacteria preserved within an ice wedge from the Fox permafrost tunnel was undertaken by cultivation and molecular techniques. The radiocarbon age of the ice wedge was determined. Our results suggest that the bacteria in the ice wedge adapted to the frozen conditions have survived for 25,000 years.

MeSH terms

  • Adaptation, Physiological
  • Bacteria / classification*
  • Base Sequence
  • Carbon Radioisotopes
  • Ecosystem
  • Freezing
  • Geologic Sediments / microbiology*
  • Ice*
  • Molecular Sequence Data
  • Phylogeny

Substances

  • Carbon Radioisotopes
  • Ice

Associated data

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