Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus asahii Yumoto, Hirota, Yamaga,
Nodasaka, Kawasaki, Matsuyama and Nakajima 2004.
Description is based on a single isolate.
Gram-positive rods, 1.4-3.0 x 0.4-0.8 µm, motile by means of peritrichous flagella.
Form terminally or centrally ellipsoidal endospores, not swelling the sporangium.
Colonies are white and circular. Species utilize butyrate as carbon source for growth.
Grow aerobically, at pH 5.0-9; optimal growth is observed at pH 9. NaCl is not
required for growth. Grow in 0 and 1% NaCl; no growth in 2% NaCl. Temperature
range 15-45 ºC. Allantoin or urate are not required. No growth on MacConkey agar.
Isolated from a soil sample obtained from Tagata-gun, Shizuoka, Japan.
Exhibits a deodorizing effect on animal faeces (deodorize the bad smell generated from short-chain fatty acids).
- 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.
- Yumoto I., Hirota K., Yamaga S., Nodasaka Y., Kawasaki T., Matsuyama H. and Nakajima K.,2004. Bacillus asahii sp. nov., a novel
bacterium isolated from soil with the ability to deodorize the bad smell generated from short-chain fatty acids. IJSEM 54, 1997-
Positive results for oxidase, catalase, nitrate reduction (weak), hydrolysis of starch
(weak), hydrolysis of Tween 20, hydrolysis of Tween 40, hydrolysis of Tween 60,
trypsin, esterase (C4) & esterase/lipase (C8).
Negative results for beta-galactosidase, hydrolysis of gelatin, indole production, H2S production, Voges-Proskauer, methyl red,
alkaline phosphatase, valine arylamidase, cystine arylamidase, chymotrypsin, acid phosphatase, beta-glucosidase,
alpha-glucosidase, N-acetyl-beta-glucosaminidase, acid production from D-glucose, D-mannitol, D-mannose, glycerol, D-arabinose,
fructose, galactose, meso-inositol, lactose, maltose, raffinose, rhamnose, sorbitol, sucrose, trehalose, D & L-xylose.
(c) Costin Stoica