Phylogenetic analysis of bacteria preserved in a permafrost ice wedge for 25,000 years.
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.
Katayama
Taiki
T
Laboratory of Applied Microbiology, Graduate School of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan.
Tanaka
Michiko
M
Moriizumi
Jun
J
Nakamura
Toshio
T
Brouchkov
Anatoli
A
Douglas
Thomas A
TA
Fukuda
Masami
M
Tomita
Fusao
F
Asano
Kozo
K
D000222:Adaptation, Physiological; D001419:Bacteria / Q000145:classification*; D001483:Base Sequence; D002250:Carbon Radioisotopes; D017753:Ecosystem; D005615:Freezing; D019015:Geologic Sediments / Q000382:microbiology*; D007053:Ice; D008969:Molecular Sequence Data; D010802:Phylogeny
D002250:Carbon Radioisotopes; D007053:Ice