| Neobacillus niacini |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Cytobacillaceae, Genus Neobacillus, Neobacillus niacini
(Nagel and Andreesen 1991) Patel and Gupta 2020.
Synonym: Bacillus niacini Nagel and Andreesen 1991.
(Nagel and Andreesen 1991) Patel and Gupta 2020.
Synonym: Bacillus niacini Nagel and Andreesen 1991.
Rods, 0.9-1.4 x 3.0-5.6 µm; cells may be pleomorphic and increase in width. Long
chains may be formed when grown on complex media. Gram-positive on nicotinate
agar and Gram-variable in nutrient broth. Motility is variable. Produce central or
subterminal, ellipsoidal endospores wich may swell the sporangia slightly.
Sporulation was poor in complex media, satisfactory on nicotinate agar and it was
good on phenol red agar containing organic acid (acetate, aspartate, glutamate, and
malate)
chains may be formed when grown on complex media. Gram-positive on nicotinate
agar and Gram-variable in nutrient broth. Motility is variable. Produce central or
subterminal, ellipsoidal endospores wich may swell the sporangia slightly.
Sporulation was poor in complex media, satisfactory on nicotinate agar and it was
good on phenol red agar containing organic acid (acetate, aspartate, glutamate, and
malate)
Colonies are smooth, with light beige center surrounded by translucent areas of
variable extension, 3-5 mm in diameter. Aerobic. Growth in anaerobic conditions is
variable or weak. Growth temperature 10-40 ºC; pH 7-8 (optimum). No growth in 2-8%
NaCl medium. NaCl, alantoin or urate are not required for growth.
Nicotinate, in the presence of molybdate, can be used as sole source of carbon,
nitrogen and energy
variable extension, 3-5 mm in diameter. Aerobic. Growth in anaerobic conditions is
variable or weak. Growth temperature 10-40 ºC; pH 7-8 (optimum). No growth in 2-8%
NaCl medium. NaCl, alantoin or urate are not required for growth.
Nicotinate, in the presence of molybdate, can be used as sole source of carbon,
nitrogen and energy
Isolated from soil. Growth in the presence of lysozyme (0.001%) is variable.
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. - M. Nagel and J.R. Andreesen, 1991. Bacillus niacini sp. nov., a Nicotinate-Metabolizing Mesophile Isolated from Soil. IJSB 41, 1,
134-139. - Patel S, Gupta RS. A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus:
Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov.,
Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov. Int J Syst Evol Microbiol 2020; 70:406-438.
Positive results for catalase (weak), beta-galactosidase, hydrolysis of gelatin (weak), nitrate reduction, acid production from: N-acetyl-
D-glucosamine, amygdalin, fructose, D-glucose, galactose, D-mannose, maltose, starch, sucrose, trehalose, L- or D-xylose.
Negative results for arginine dihydrolase, degradation of tyrosine, deamination of phenylalanine, lysine decarboxylase, ornithine
decarboxylase, egg yolk reaction, hydrolysis of casein, Voges-Proskauer reaction, acid production from: L- or D-arabinose, L- or
D-arabitol, adonitol, erythritol, L- or D-fucose, gluconate, D-mannitol, 2- or 5-ketogluconate and methyl beta-xyloside.
Variable results for hydrolysis of urea, indole production, citrate utilization, oxidase, hydrolysis of starch, acid production from: arbutin,
cellobiose, dulcitol, glycerol, glycogen, beta-gentibiose, lactose, melezitose, melibiose, meso-inositol, inulin, raffinose, rhamnose,
ribose, sorbitol, salicin and xylitol.
D-glucosamine, amygdalin, fructose, D-glucose, galactose, D-mannose, maltose, starch, sucrose, trehalose, L- or D-xylose.
Negative results for arginine dihydrolase, degradation of tyrosine, deamination of phenylalanine, lysine decarboxylase, ornithine
decarboxylase, egg yolk reaction, hydrolysis of casein, Voges-Proskauer reaction, acid production from: L- or D-arabinose, L- or
D-arabitol, adonitol, erythritol, L- or D-fucose, gluconate, D-mannitol, 2- or 5-ketogluconate and methyl beta-xyloside.
Variable results for hydrolysis of urea, indole production, citrate utilization, oxidase, hydrolysis of starch, acid production from: arbutin,
cellobiose, dulcitol, glycerol, glycogen, beta-gentibiose, lactose, melezitose, melibiose, meso-inositol, inulin, raffinose, rhamnose,
ribose, sorbitol, salicin and xylitol.
(c) Costin Stoica
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