Query: NC_002689:78297 Thermoplasma volcanium GSS1, complete genome
Lineage: Thermoplasma volcanium; Thermoplasma; Thermoplasmataceae; Thermoplasmatales; Euryarchaeota; Archaea
General Information: This strain is the type strain for this species, and was isolated from a solfataric (volcanic area that gives off sulfuric gases) field. Thermophilic archaea. This organism is a thermophilic, acidophilic, archaea that was isolated from acidic hydrothermal vents on the shore of Aeolian Island of Vulcano, Italy. Growth of this facultative aerobe occurs at temperatures of 33-67°C with optimal at 60°C and pH of 1.0-4.0 (optimal 2.0).
Subject: NC_010556:691498 Exiguobacterium sibiricum 255-15, complete genome
Lineage: Exiguobacterium sibiricum; Exiguobacterium; Bacillales Family XII; Bacillales; Firmicutes; Bacteria
General Information: This organism was isolated from a 2-3 million-year permafrost core in Siberia, Russia and can survive and grow rapidly at low temperatures. Analysis of long-term survival of psychrophilic organisms such as this one may aid understanding of the potential growth of organisms in astrobiology. Exiguobacterium sibiricum is a psychrotolerant organism able to grow at temperatures that range from -6 to 40 degrees C. This organism is also able to survive repeated freeze/thaw cycles which may contribute to its ability to survive in cold environments.