| Psychrobacillus insolitus |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Psychrobacillus, Psychrobacillus
insolitus (Larkin and Stokes 1967) Krishnamurthi et al. 2011.
Basonym: Bacillus insolitus Larkin and Stokes (1967).
insolitus (Larkin and Stokes 1967) Krishnamurthi et al. 2011.
Basonym: Bacillus insolitus Larkin and Stokes (1967).
Gram positive, motile rods or coccoid rods, 1.0-1.5 x 1.6-2.7 μm, on nutrient agar and
0.7-0.9 x 2.4-5.3 µm on trypticase soy agar. One polar and one subpolar flagellum.
Nonmotile cocci may be found. Sporulates and germinates at 0 ºC. Spores are
spherical to cylindrical, 0.7 x 1.4 µm in diameter. Terminal ellipsoidal and cylindrical
spores are formed in rod-shaped cells. Not swelling the sporangia.
0.7-0.9 x 2.4-5.3 µm on trypticase soy agar. One polar and one subpolar flagellum.
Nonmotile cocci may be found. Sporulates and germinates at 0 ºC. Spores are
spherical to cylindrical, 0.7 x 1.4 µm in diameter. Terminal ellipsoidal and cylindrical
spores are formed in rod-shaped cells. Not swelling the sporangia.
Colonies on nutrient agar are small, soft, off-white and irregular. Maximum growth
temperature 25 ºC, minimum 0-5 ºC. Grow in 2% NaCl (variable) and at pH 7. Do not
grow in anaerobic agar, in 5-10% NaCl or at pH 5.7. NaCl, allantoin or urate are not
required for growth.
temperature 25 ºC, minimum 0-5 ºC. Grow in 2% NaCl (variable) and at pH 7. Do not
grow in anaerobic agar, in 5-10% NaCl or at pH 5.7. NaCl, allantoin or urate are not
required for growth.
Isolated from normal and marshy soil. No growth in the presence of lysozyme.
Not determined.
- Gordon R.E., Haynes W.C., Pang C.H. (1973) – The genus Bacillus . Agriculture Handbook No. 427, U.S.D.A., Washington D.C.
- Buchanan R.E., Gibbons N.E., Cowan S.T., Holt J.G., Liston J., Murray R.G.E., Niven C.F., Ravin A.W., Stanier R.W. ( 1974) – Bergey’s
Manual of Determinative Bacteriology, Eight Edition, The Williams & Wilkins Company, Baltimore. - 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. - Euzeby J.P. - "List of Bacterial Names with Standing in Nomenclature". https://www.bacterio.cict.fr/b/bacillus.html
Positive for catalase, oxidase, hydrolysis of esculin, beta-galactosidase, acid production from: glycerol, starch,
N-acetyl-D-glucosamine, amygdalin, arbutin, cellobiose, fructose, beta-gentibiose, maltose, ribose and sucrose.
Negative results for starch hydrolysis, reduction of nitrate to nitrite, decomposition of casein, decomposition of tyrosine,
Voges-Proskauer reaction, arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, tryptophan deaminase citrate
utilization, indole production, hydrolysis of gelatin, acid production from methyl beta-xyloside, glucose, mannitol, D-mannose, adonitol,
D- or L-arabinose, L-arabitol, dulcitol, erythritol, D- or L-fucose, gluconate, 2- or 5-ketogluconate, salicin, sorbose, xylitol and xylose.
Variable results for deamination of phenylalanine, hydrolysis of urea, acid production from: glycogen, D-arabitol, galactose,
meso-inositol, inulin, lactose, lyxose, melezitose , melibiose, raffinose, rhamnose, sorbitol and trehalose.
N-acetyl-D-glucosamine, amygdalin, arbutin, cellobiose, fructose, beta-gentibiose, maltose, ribose and sucrose.
Negative results for starch hydrolysis, reduction of nitrate to nitrite, decomposition of casein, decomposition of tyrosine,
Voges-Proskauer reaction, arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, tryptophan deaminase citrate
utilization, indole production, hydrolysis of gelatin, acid production from methyl beta-xyloside, glucose, mannitol, D-mannose, adonitol,
D- or L-arabinose, L-arabitol, dulcitol, erythritol, D- or L-fucose, gluconate, 2- or 5-ketogluconate, salicin, sorbose, xylitol and xylose.
Variable results for deamination of phenylalanine, hydrolysis of urea, acid production from: glycogen, D-arabitol, galactose,
meso-inositol, inulin, lactose, lyxose, melezitose , melibiose, raffinose, rhamnose, sorbitol and trehalose.
(c) Costin Stoica
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