“Some of the genus Carnobacterium microbes have already been found to exist in cold climates around the world. …
Researchers from the Department of Microbiology & Cell Science at the University of Florida took samples of bacteria from the sand deposits, on the bank of the Kolyma River in northeastern Siberia.
After extracting the samples from a depth of 12-20 meters where the soil has an average annual temperature of -7 °C, scientists grew bacterial colonies at 28 °C in normal atmospheric conditions.
The bacteria were then tested in Martian conditions – exposed to a lack of oxygen, extremely negative temperatures, and very low pressure – which hinder the growth of most terrestrial microorganisms.
After the 30-day experiment, only six of the 10,000 isolates were able to grow under these conditions.
All of the surviving isolates were members of the genus Carnobacterium.