Taxonomy
Morphology
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Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus krulwichiae Yumoto, Yamaga,
Sogabe, Nodasaka,Matsuyama, Nakajima and Suemori 2003. Description is based on two isolates.
Gram-positive, straight rods, 0.5-0.7 x 1.5-2.6 µm, motile by  peritrichous flagella.
Produce subterminal, ellipsoidal endospores in  unswollen sporangia.
Produce round, colorless colonies.  Facultatively anaerobic. Obligate alkaliphile; grow
at pH 8-10 but not at neutral pH. Temperature 40 ºC; no growth at 10 or 50 ºC. NaCl,
allantoin and urate are not required for growth. Halotolerant,  grow in nutrient broth
with 0-14% NaCl added.
Isolated from a soil sample obtained from Tsukuba, Ibaraki, 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., Yamaga S., Sogabe Y., Nodasaka Y., Matsuyama H., Nakajima K. and Suemori A., 2003. Bacillus krulwichiae  sp. nov.,
    a halotolerant obligate alkaliphilic that utilizes benzoate and m-hydroxybenzoate. IJSEM 53, 1531-1536.
Positive results for hydrolysis of hippurate, oxidase, catalase, nitrate reduction,
hydrolysis of starch, hydrolysis of Tween 20, 40, 60, 80, hydrolysis of DNA, acid
production (when grown at pH 10) from: D-glucose,D-fructose, D-galactose, glycerol,
maltose, D-mannitol, D-ribose, sucrose, trehalose & D-xylose.

Negative results for deamination of phenylalanine, beta-galactosidase, indole
production, H2S production, acid production from:
D-arabinose, cellobiose, lactose, D-mannose, meso-inositol, melibiose, raffinose, rhamnose & sorbitol.

Variable results for hydrolysis of gelatin & hydrolysis of casein.
(c) Costin Stoica
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