| Lederbergia galactosidilytica |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Lederbergia, Lederbergia
galactosidilytica corrig. (Heyndrickx et al. 2004) Gupta et al. 2020.
Synonyms: Lederbergia galactosidilyticus (Heyndrickx et al. 2004) Gupta et al. 2020, Bacillus galactosidilyticus Heyndrickx et al. 2004.
Species also includes strains from Bacillus lentus, Bacillus firmus and Bacillus circulans.
galactosidilytica corrig. (Heyndrickx et al. 2004) Gupta et al. 2020.
Synonyms: Lederbergia galactosidilyticus (Heyndrickx et al. 2004) Gupta et al. 2020, Bacillus galactosidilyticus Heyndrickx et al. 2004.
Species also includes strains from Bacillus lentus, Bacillus firmus and Bacillus circulans.
Gram-positive or Gram-variable, small, plump rods, 0.7-0.9 x 2.0-2.5 µm, motile,
central / paracentral or subterminal, ellipsoidal endospores in slightly swollen
sporangia.
central / paracentral or subterminal, ellipsoidal endospores in slightly swollen
sporangia.
Colonies are creamy/off-white with opaque center, smooth, flat, 1 mm in diameter
after 2 days on TSA; the margins are usually irregular with pointed projections that
may spread and become rhizoid in older cultures. Facultatively anaerobic.
Growth at pH 6-10.5, and at 30-40 ºC. Allantoin, urate or NaCl are not required for
growth.
after 2 days on TSA; the margins are usually irregular with pointed projections that
may spread and become rhizoid in older cultures. Facultatively anaerobic.
Growth at pH 6-10.5, and at 30-40 ºC. Allantoin, urate or NaCl are not required for
growth.
Isolated from raw milk, partially decomposed wheat grain and infant bile.
Unknown.
- 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. - Heyndrickx M., Logan N.A., Lebbe L., Rodriguez-Diaz M., Forsyth G., Goris J., Scheldeman P. and De Vos P. 2004. Bacillus
galactosidilyticus sp. nov., an alkali-tolerant beta-galactosidase producer. IJSEM 54, 617-621. - Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae
genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal
for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol
Microbiol 2020; 70:5753-5798.
Positive results for catalase, beta-galactosidase, hydrolysis of esculin, nitrate reduction, hydrolysis of casein (weak), acid production
from: D-glucose, N-acetyl-D-glucosamine (weak) and fructose (weak).
Negative results for arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, hydrolysis of gelatin, indole production, H2S
production, Voges-Proskauer reaction, citrate utilization, acid production from: adonitol, D-arabinose, D- or L-arabitol, dulcitol, erythritol,
D- or L-fucose, lyxose, methyl β-xyloside, glycerol, glycogen, gluconate, meso-inositol, 2- or 5-ketogluconate, sorbitol, sorbose, xylitol
and L-xylose.
Variable results for hydrolysis of urea. Weak and variable results for acid production from: L-arabinose, amygdalin, arbutin, cellobiose,
galactose, beta-gentibiose, inulin, lactose, D-mannitol, D-mannose, maltose, melezitose, melibiose, raffinose, rhamnose, ribose,
salicin, starch, sucrose, trehalose and D-xylose.
from: D-glucose, N-acetyl-D-glucosamine (weak) and fructose (weak).
Negative results for arginine dihydrolase, lysine decarboxylase, ornithine decarboxylase, hydrolysis of gelatin, indole production, H2S
production, Voges-Proskauer reaction, citrate utilization, acid production from: adonitol, D-arabinose, D- or L-arabitol, dulcitol, erythritol,
D- or L-fucose, lyxose, methyl β-xyloside, glycerol, glycogen, gluconate, meso-inositol, 2- or 5-ketogluconate, sorbitol, sorbose, xylitol
and L-xylose.
Variable results for hydrolysis of urea. Weak and variable results for acid production from: L-arabinose, amygdalin, arbutin, cellobiose,
galactose, beta-gentibiose, inulin, lactose, D-mannitol, D-mannose, maltose, melezitose, melibiose, raffinose, rhamnose, ribose,
salicin, starch, sucrose, trehalose and D-xylose.
(c) Costin Stoica
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