| Geobacillus thermocatenulatus |
Taxonomy
Morphology
Growth conditions
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Geobacillus, Geobacillus
thermocatenulatus (Golovacheva et al. 1991) Nazina et al. 2001.
Synonyms: Bacillus thermocatenulatus Golovacheva et al. 1991, Geobacillus gargensis Nazina et al. 2004.
thermocatenulatus (Golovacheva et al. 1991) Nazina et al. 2001.
Synonyms: Bacillus thermocatenulatus Golovacheva et al. 1991, Geobacillus gargensis Nazina et al. 2004.
Gram-positive rods, 0.9-1.5 x 6-12 µm, occuring singly or in long chains. Motile by
preitrichous flagella. Ellipsoidal or cylindrical spores are located terminally,
occasionally subterminally and paracentrally, and do not swell the sporangia.
preitrichous flagella. Ellipsoidal or cylindrical spores are located terminally,
occasionally subterminally and paracentrally, and do not swell the sporangia.
Colonies on TSA are butyrous, cream or yellowish in colour, round and raised with
entire margins; may become partially heaped-up and viscid. Grows at 37-80 ºC, with
optimum growth at 60 ºC, at pH 5-9; optimum growth at pH 7. Tolerates up to 5%
NaCl. Growth is weak in the absence of oxygen.
entire margins; may become partially heaped-up and viscid. Grows at 37-80 ºC, with
optimum growth at 60 ºC, at pH 5-9; optimum growth at pH 7. Tolerates up to 5%
NaCl. Growth is weak in the absence of oxygen.
Isolated from a slime layer inside a hot-gas borehole pipe and from the Garga hot spring in the Transbaikal region, Russia.
Unknown (none).
- Dinsdale AE, Halket G, Coorevits A, Van Landschoot A, Busse HJ, De Vos P, Logan NA. Emended descriptions of Geobacillus
thermoleovorans and Geobacillus thermocatenulatus. Int J Syst Evol Microbiol 2011; 61:1802-1810.
Positive results for catalase, aesculin hydrolysis, gelatinase, oxidase, Voges-Proskauer test, acid production from: amygdalin,
arbutin, cellobiose, D-fructose, galactose, D-glucose, glycerol, maltose, mannitol, D-mannose, melezitose, melibiose, raffinose,
ribose, salicin, starch, sucrose and trehalose.
Negative results for arginine dihydrolase, caseinase, H2S production, indole production, lysine decarboxylase, ONPG, ornithine
decarboxylase, starch hydrolysis, tryptophan deaminase, urease, acid production from: adonitol, D- and L-arabinose, D- and L-
arabitol, dulcitol, erythritol, D- and L-fucose, gentiobiose, gluconate, glycogen, inulin, 2- and 5-ketogluconate, lactose, D-lyxose, myo-
inositol, methyl D-mannoside, methyl xyloside, rhamnose, sorbitol, L-sorbose, D-tagatose, turanose, xylitol and D- and L-xylose.
Variable results for citrate utilization, nitrate reduction, acid production from: methyl D-glucoside and N-acetylglucosamine.
arbutin, cellobiose, D-fructose, galactose, D-glucose, glycerol, maltose, mannitol, D-mannose, melezitose, melibiose, raffinose,
ribose, salicin, starch, sucrose and trehalose.
Negative results for arginine dihydrolase, caseinase, H2S production, indole production, lysine decarboxylase, ONPG, ornithine
decarboxylase, starch hydrolysis, tryptophan deaminase, urease, acid production from: adonitol, D- and L-arabinose, D- and L-
arabitol, dulcitol, erythritol, D- and L-fucose, gentiobiose, gluconate, glycogen, inulin, 2- and 5-ketogluconate, lactose, D-lyxose, myo-
inositol, methyl D-mannoside, methyl xyloside, rhamnose, sorbitol, L-sorbose, D-tagatose, turanose, xylitol and D- and L-xylose.
Variable results for citrate utilization, nitrate reduction, acid production from: methyl D-glucoside and N-acetylglucosamine.
(c) Costin Stoica
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