Taxonomy
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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus clausii  Nielsen, Fritze and Priest
1995.
Hystorical synonym:
Bacillus lentus type II.
Gram-positive rods, 0.5-0.7 x 2.0-4.0 µm, subterminally / paracentrally  ellipsoidal
endospores in slightly swollen sporangia.
Colonies are white and filamentous with filamentous margins. Grow at pH 7 - 8
(optimum); no growth at pH 5-6 or 10. Grow in 2 to 8 % NaCl; no growth in 10% NaCl.
Growth temperature 15-50 ºC. Allantoin, urate or NaCl are not required for growth.
Isolated from mud and soil.
Unknown.
  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.
Positive results for hydrolysis of gelatin, nitrate reduction, hydrolysis of casein &
hydrolysis of starch.

Negative results for hydrolysis of hippurate, hydrolysis of Tween 20, 40, 60 & 80.
(c) Costin Stoica
Bacillus clausii
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