| Parageobacillus thermantarcticus |
Taxonomy
Morphology
Growth conditions
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Parageobacillus, Parageobacillus
thermantarcticus (Nicolaus et al. 2002) Aliyu et al. 2019.
Synonyms: Geobacillus thermantarcticus (Nicolaus et al. 2002) Coorevits et al. 2012,
Bacillus thermoantarcticus Nicolaus et al. 2002.
Species description is based on a single isolate.
thermantarcticus (Nicolaus et al. 2002) Aliyu et al. 2019.
Synonyms: Geobacillus thermantarcticus (Nicolaus et al. 2002) Coorevits et al. 2012,
Bacillus thermoantarcticus Nicolaus et al. 2002.
Species description is based on a single isolate.
Gram-positive rods, 0.5-2.0 x 3.0-5.0 µm. Motile. Spores are ellipsoidal, located
terminally, swelling the sporangium.
terminally, swelling the sporangium.
Cells grow aerobically at temperatures ranging from 37 ºC to 65 ºC, with optimal
growth at 63 ºC. The pH range suitable for growth is 5.5-9.0, with optimal growth at pH
6.0. No growth in 5% NaCl. Yeast extract, glucose, trehalose and xylose support the
growth. Exopolysaccharide production. Aerobic.
growth at 63 ºC. The pH range suitable for growth is 5.5-9.0, with optimal growth at pH
6.0. No growth in 5% NaCl. Yeast extract, glucose, trehalose and xylose support the
growth. Exopolysaccharide production. Aerobic.
Isolated from the geothermal soil of Mount Melbourne, Antarctica.
Unknown (none).
- Nicolaus B, Lama L, Esposito E, Manca MC, di Prisco G, Gambacorta A. ‘‘ Bacillus thermoantarcticus '' sp. nov., from Mount
Melbourne, Antarctica : a novel thermophilic species. Polar Biol 1996; 16:101-104. - Coorevits A, Dinsdale AE, Halket G, Lebbe L, De Vos P, Van Landschoot A, Logan NA. Taxonomic revision of the genus Geobacillus:
emendation of Geobacillus, G. stearothermophilus, G. jurassicus, G. toebii, G. thermodenitrificans and G. thermoglucosidans (nom.
corrig., formerly 'thermoglucosidasius'); transfer of Bacillus thermantarcticus to the genus as G. thermantarcticus comb. nov.;
proposal of Caldibacillus debilis gen. nov., comb. nov.; transfer of G. tepidamans to Anoxybacillus as A. tepidamans comb. nov.; and
proposal of Anoxybacillus caldiproteolyticus sp. nov. Int J Syst Evol Microbiol 2012; 62:1470-1485.
Positive results for alcohol dehydrogenase, aesculin hydrolysis, gelatin hydrolysis, alpha-glucosidase, hippurate hydrolysis, oxidase,
Voges-Proskauer test, acid production from: cellobiose, fructose, glucose, galactose (weak), glycerol (weak), methyl D-glucoside,
salicin, sucrose, trehalose, turanose and D-xylose.
Can utilize: trehalose, xylose, glucose, maltose (weak) and sucrose (weak).
Negative results for alpha-amylase, casein hydrolysis, catalase, beta-galactosidase, nitrate reduction, tyrosine degradation, acid
production from: N-acetylglucosamine, amygdalin, L-arabinose, arbutin, gentiobiose, glycogen, myo-inositol, lactose, mannitol,
melezitose, melibiose, raffinose and ribose.
No utilization of: cellobiose, propionate, citrate and dextrin.
Variable results for catalase and starch hydrolysis.
Voges-Proskauer test, acid production from: cellobiose, fructose, glucose, galactose (weak), glycerol (weak), methyl D-glucoside,
salicin, sucrose, trehalose, turanose and D-xylose.
Can utilize: trehalose, xylose, glucose, maltose (weak) and sucrose (weak).
Negative results for alpha-amylase, casein hydrolysis, catalase, beta-galactosidase, nitrate reduction, tyrosine degradation, acid
production from: N-acetylglucosamine, amygdalin, L-arabinose, arbutin, gentiobiose, glycogen, myo-inositol, lactose, mannitol,
melezitose, melibiose, raffinose and ribose.
No utilization of: cellobiose, propionate, citrate and dextrin.
Variable results for catalase and starch hydrolysis.
(c) Costin Stoica
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