| Robertmurraya siralis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Cytobacillaceae, Genus Robertmurraya, Robertmurraya
siralis (Pettersson et al. 2000) Gupta et al. 2020.
Old synonym: Bacillus siralis Pettersson, de Silva, Uhlen and Priest 2000.
siralis (Pettersson et al. 2000) Gupta et al. 2020.
Old synonym: Bacillus siralis Pettersson, de Silva, Uhlen and Priest 2000.
Gram-positive rods, 0.5-0.8 x 2.0-3.0 µm. Produce subterminal / terminal, ellipsoidal
endospores in swollen sporangia.
endospores in swollen sporangia.
Colonies are brown, circular, with shiny, glistening and granular surfaces, 3-5 mm in
diameter after 1 day on BHI agar. On nutrient agar the colonies are smaller (1-3 mm
in diameter), pale and opaque. Aerobic, no anaerobic growth.
Growth parameteres: maximum temperature 50 ºC, pH 7, 0-7% NaCl. Alantoin or
urate are not required for growth.
diameter after 1 day on BHI agar. On nutrient agar the colonies are smaller (1-3 mm
in diameter), pale and opaque. Aerobic, no anaerobic growth.
Growth parameteres: maximum temperature 50 ºC, pH 7, 0-7% NaCl. Alantoin or
urate are not required for growth.
Isolated from silage by heat treating the sample at 100 ºC for 60 min and plating onto Brain heart infusion agar.
Resistant to erythromycin (5 µg / ml).
Resistant to erythromycin (5 µg / ml).
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. - B. Pettersson, S.K. de Silva, M. Uhlen and F. G. Priest, 2000. Bacillus siralis sp. nov., a novel species from silage with a higher
order structural attribute in the 16S rRNA genes. IJSEM 50, 2181-2187. - 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 hydrolysis of esculin, hydrolysis of gelatin, oxidase, catalase, nitrate reduction and hydrolysis of casein.
Negative results for degradation of tyrosine, deamination of phenylalanine, hydrolysis of starch, Voges-Proskauer, citrate utilization,
tryptophan deaminase, acid production from: L- or D-arabinose, D-glucose, D-mannitol, D-mannose, glycerol, salicin, cellobiose,
fructose, galactose, meso-inositol, lactose, maltose, melibiose, raffinose, rhamnose, ribose, sorbitol, sucrose, trehalose, L- or
D-xylose.
Variable results for arginine dihydrolase.
Negative results for degradation of tyrosine, deamination of phenylalanine, hydrolysis of starch, Voges-Proskauer, citrate utilization,
tryptophan deaminase, acid production from: L- or D-arabinose, D-glucose, D-mannitol, D-mannose, glycerol, salicin, cellobiose,
fructose, galactose, meso-inositol, lactose, maltose, melibiose, raffinose, rhamnose, ribose, sorbitol, sucrose, trehalose, L- or
D-xylose.
Variable results for arginine dihydrolase.
(c) Costin Stoica
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