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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus horti  Yumoto, Yamazaki, Sawabe,
Nakano, Kawasaki, Ezura and Shinano 1998.
Gram-negative rods, 0.6-0.8 x 1.5-6.0 µm, motile by peritrichous flagella. Produce
subterminal, ellipsoidal endospores in swollen sporangia.
Colonies are white on complex medium at pH 10. Aerobic. Growth occurs at pH 7 to
10 (optimum pH 8-10) and at 15-40 ºC. Grow in nutrient broth with 2-11% NaCl
added. Allantoin and urate are not required for growth. NaCl requirement is variable.
Isolated from garden soil in Hokkaido, Japan.
Not determined.
  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. Yumoto I., Yamazaki K., Sawabe T., Nakano K., Kawasaki K., Ezura Y. and Shinano H., 1998. Bacillus horti sp. nov., a new Gram-
    negative alkaliphilic bacillus. IJSB 48, 565-571.
Positive results for beta-galactosidase, hydrolysis of gelatin, oxidase, catalase, nitrate
reduction, hydrolysis of casein, hydrolysis of starch, hydrolysis of DNA, acid production
from: D-glucose, D-xylose, fructose & ribose.

Negative results for deamination of phenylalanine, hydrolysis of urea, indole production,
H
2S production (positive at pH 7), hydrolysis of Tween 20, 40, 60 & 80, acid production from: D-arabinose, erythritol, galactose, meso-
inositol, melibiose, raffinose, rhamnose, sorbitol & sucrose.

Variable results for hydrolysis of hippurate,  acid production from D-mannose, lactose
(c) Costin Stoica
Bacillus horti
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