Effects of long-term simulated martian conditions on a freeze-dried and homogenized bacterial permafrost community

• Published in: Astrobiology Vol. 9; no. 2; p. 229
• Main Authors: Hansen, Aviaja A, Jensen, Lars L, Kristoffersen, Tommy, Mikkelsen, Karina, Merrison, Jonathan, Finster, Kai W, Lomstein, Bente Aa
• Format: Journal Article
• Language: English
• Published: United States 01.03.2009
• Subjects: Arctic Regions; Atmosphere - chemistry; Atmospheric Pressure; Bacteria - classification; Bacteria - isolation & purification; Bacteria - radiation effects; Base Sequence; Colony Count, Microbial; Dose-Response Relationship, Radiation; Exobiology; Extraterrestrial Environment; Freeze Drying; Freezing; Mars; Microbial Viability - radiation effects; Molecular Sequence Data; Phylogeny; Soil; Space Simulation; Temperature; Time Factors; Ultraviolet Rays

Indigenous bacteria and biomolecules (DNA and proteins) in a freeze-dried and homogenized Arctic permafrost were exposed to simulated martian conditions that correspond to about 80 days on the surface of Mars with respect to the accumulated UV dose. The simulation conditions included UV radiation, f...