| Bacillus smithii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Bacillus, Bacillus smithii Nakamura,
Blumenstock & Claus 1988.
Blumenstock & Claus 1988.
Gram-positive rods, motile by peritrichous flagellation, 0.8-1.0 x 5.0-6.0 µm, producing
terminal/subterminal, ellipsoidal to cylindrical endospores (0.6-0.8 x 1.3-1.5 µm) in
unswollen sporangia.
terminal/subterminal, ellipsoidal to cylindrical endospores (0.6-0.8 x 1.3-1.5 µm) in
unswollen sporangia.
Colonies are thin, smooth, translucent, unpigmented, and about 2 mm in diameter.
Good growth occurs in nutrient broth with 15% NaCl added.
Aerobic, facultatively anaerobic. Facultatively thermophilic. Growth temperature 25-65
ºC, pH 6-7. Grow in 2-3% NaCl, no growth in 5-10% NaCl. NaCl, alantoin or urate are
not required for growth.
Good growth occurs in nutrient broth with 15% NaCl added.
Aerobic, facultatively anaerobic. Facultatively thermophilic. Growth temperature 25-65
ºC, pH 6-7. Grow in 2-3% NaCl, no growth in 5-10% NaCl. NaCl, alantoin or urate are
not required for growth.
Isolated from evaporated milk, canned foods, cheese, and sugar beet juice from extraction installations.
No growth in the presence of lysozyme.
No growth in the presence of lysozyme.
Undetermined.
- 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. - L.K. Nakamura, I. Blumenstock and D. Claus, 1988. Taxonomic Study of Bacillus coagulans Hammer 1915 with a Proposal for
Bacillus smithii sp. nov. IJSB 38, 63-73
Positive results for oxidase, catalase, hydrolysis of hippurate, hydrolysis of starch (weak), acid production from: fructose, D-glucose,
maltose and trehalose.
Negative results for arginine dihydrolase, degradation of tyrosine, deamination of phenylalanine, beta-galactosidase, lysine
decarboxylase, ornithine decarboxylase, hydrolysis of urea, hydrolysis of gelatin, egg yolk reaction, H2S production, indole production,
nitrate reduction, hydrolysis of casein, Voges-Proskauer test, acid production from: amygdalin, D-arabinose, D- or L-arabitol, arbutin,
adonitol, cellobiose, dulcitol, erythritol, D- or L-fucose, beta-gentibiose, gluconate, meso-inositol, inulin, 2- or 5-ketogluconate,
lactose, lyxose, methyl beta-xyloside, melezitose, melibiose, raffinose, N-acetyl-D-glucosamine, sorbose, sucrose, starch, xylitol and
L-xylose.
Variable results for hydrolysis of esculin, citrate utilization, acid production from: L-arabinose, D-mannitol, D-mannose, galactose,
glycerol, rhamnose, ribose, sorbitol, salicin and D-xylose.
maltose and trehalose.
Negative results for arginine dihydrolase, degradation of tyrosine, deamination of phenylalanine, beta-galactosidase, lysine
decarboxylase, ornithine decarboxylase, hydrolysis of urea, hydrolysis of gelatin, egg yolk reaction, H2S production, indole production,
nitrate reduction, hydrolysis of casein, Voges-Proskauer test, acid production from: amygdalin, D-arabinose, D- or L-arabitol, arbutin,
adonitol, cellobiose, dulcitol, erythritol, D- or L-fucose, beta-gentibiose, gluconate, meso-inositol, inulin, 2- or 5-ketogluconate,
lactose, lyxose, methyl beta-xyloside, melezitose, melibiose, raffinose, N-acetyl-D-glucosamine, sorbose, sucrose, starch, xylitol and
L-xylose.
Variable results for hydrolysis of esculin, citrate utilization, acid production from: L-arabinose, D-mannitol, D-mannose, galactose,
glycerol, rhamnose, ribose, sorbitol, salicin and D-xylose.
(c) Costin Stoica
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