Taxonomy
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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus okuhidensis  Li, Kawamura, Shida,
Yamagata, Deguchi and Ezaki 2002.
Description is based upon two isolates.
Weakly Gram-positive, motile rods (peritrichous flagella), 0.5-1.0 x 5.0-7.0 µm. Cells
stain slightly Gram-positive in the exponential growth phase and Gram-negative in the
stationary phase. Produce subterminal, ellipsoidal endospores in sometime slightly  
swollen sporangia.
Colonies are convex, smooth, yellowish. Aerobic. Alkaliphilic. Growth temperature
30-60 ºC (optimum 50 ºC); pH 6-11 (optimum pH 10.5). Grow in 0-10% NaCl. Alantoin
or urate are not required for growth.
Isolated from hot spa water, in Okuhida, Gifu, Japan.
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. Li, Y. Kawamura, O. Shida, S. Yamagata, T. Deguchi and T. Ezaki, 2002. Bacillus okuhidensis sp. nov., isolated from the Okuhida
    spa area of Japan. JSEM 52, 1205-1209.
Positive results for hydrolysis of gelatin, oxidase, catalase, nitrate reduction, hydrolysis
of casein & hydrolysis of starch.

Negative results for deamination of phenylalanine, hydrolysis of hippurate, hydrolysis of Tween 20, Tween 40 & Tween 80.
Bacillus okuhidensis
(c) Costin Stoica
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