Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus odysseyi La Duc, Satomi and
Closely related to Lysinibacillus fusiformis and Lysinibacillus sphaericus.
Description is based upon a single isolate.
Gram-positive, motile rods, 1.0 x 4.0-5.0 µm. Produce terminal, spherical
endospores in swollen sporangia; spores show an additional exosporium layer.
Colonies are smooth, flat, with entire edges, beige. Aerobic. Growth temperature
25-42 ºC (optimum 30 ºC); pH 6-10 (optimum pH 7). Grow in 0-5% NaCl. Alantoin or
urate are not required for growth.
Isolated from the surface of the Mars Odyssey spacecraft. Resistant to desiccation, H2O2 and UV and gamma radiation.
- N.A. Logan and P. De Vos, 2009. Genus I. Bacillus Cohn 1872. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W. Ludwig, F.A.
Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes, Springer, 21-127.
- M.T. La Duc, M. Satomi and K. Venkateswaran 2004. Bacillus odyssey sp.nov., a round-spore-forming bacillus isolated from the
Mars Odyssey spacecraft. IJSEM 54, 195-201.
Positive results for catalase, acid production (prolonged incubation) from: L-arabinose
Negative results for arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, hydrolysis of urea, hydrolysis of gelatin, H2S
production, oxidase, nitrate reduction, hydrolysis of casein, hydrolysis of starch, Voges-Proskauer, tryptophan deaminase, lipase,
amylase, alginase & acid production (prolonged incubation) from D-glucose.
(c) Costin Stoica