Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus horti Yumoto, Yamazaki, Sawabe,
Nakano, Kawasaki, Ezura and Shinano 1998.
Description is based on a single isolate.
Gram-positive (Gram-variable in old cultures), nonmotile rods, 1.0-1.3 x 2.5-4.0 µm
centrally / terminally, ellipsoidal endospores in swollen sporangia.
Colonies are circular to slightly irregular, light yellow, smooth , 2-4 mm in diameter
after 3 days at 30 ºC on marine agar. Aerobic. Growth occurs at pH 5 to 7 (optimum
pH 6-7) and at 10 - 40 ºC (optimum temperature 30 ºC). Grow in nutrient broth with
2-19% NaCl added (optimum 2-5% NaCl). Allantoin and urate are not required for
growth. NaCl is required for growth..
Isolated from sea water of the East Sea in Korea.
- 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.
- Yoon J.-H., Kim I.-G., Kang K. H., Oh T.-K. and Park Y.-H., 2004. Bacillus hwajinpoensis sp. nov. and an unnamed Bacillus
genomospecies, novel members of Bacillus rRNA group 6 isolated from sea water of the East Sea and the Yellow Sea in Korea.
IJSEM 54, 803-808.
Positive results for hydrolysis of gelatin, catalase, nitrate reduction, hydrolysis of
esculin, hydrolysis of casein, hydrolysis of starch, hydrolysis of Tween 20, 40, 60 & 80, acid production from: D-glucose, D-mannitol,
D-mannose, cellobiose, fructose, galactose, maltose, melibiose, raffinose, ribose, sucrose & trehalose.
Negative results for hydrolysis of urea, oxidase, degradation of tyrosine, acid production from: L-arabinose, adonitol, D-xylose,
meso-inositol, lactose, melezitose, rhamnose & sorbitol.
(c) Costin Stoica