Query: 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.
Subject: NC_011184:597496 Vibrio fischeri MJ11 chromosome I, complete sequence
Lineage: Aliivibrio fischeri; Aliivibrio; Vibrionaceae; Vibrionales; Proteobacteria; Bacteria
General Information: This strain was isolated from a pinecone fish, Monocentris japonica, light-emitting organs in Japan. This genus is abundant in marine or freshwater environments such as estuaries, brackish ponds, or coastal areas; regions that provide an important reservoir for the organism in between outbreaks of the disease. Vibrio can affect shellfish, finfish, and other marine animals and a number of species are pathogenic for humans. This organism is found in marine environments and was originally named by Bernard Fischer during a sea voyage in the 1800s. It is a symbiont in fish and squids and is responsible for light generation in those organisms, which use it as a defense mechanism to avoid predators.