Taxonomy
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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus odysseyi  La Duc, Satomi and
Venkateswaran 2004.
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.
Undetermined.
  1. 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.
  2. 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
& glycerol.

Negative results for arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, hydrolysis of urea, hydrolysis of gelatin, H
2S
production, oxidase, nitrate reduction, hydrolysis of casein, hydrolysis of starch, Voges-Proskauer, tryptophan deaminase, lipase,
amylase, alginase & acid production (prolonged incubation) from D-glucose.
Bacillus odysseyi
(c) Costin Stoica
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