| Bacillus kexueae |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Bacillus, Bacillus kexueae Dunlap et
al. 2017.
Synonym: Aeribacillus kexueae (Sun et al. 2018) Li et al. 2024.
Species description is based on a single isolate.
al. 2017.
Synonym: Aeribacillus kexueae (Sun et al. 2018) Li et al. 2024.
Species description is based on a single isolate.
Gram-positive rods, 0.4-0.6 x 2.0-5.0 µm. Motile by peritrichous flagella. Produce
central ellipsoidal or cylindrical endospores in unswollen sporangia.
central ellipsoidal or cylindrical endospores in unswollen sporangia.
Growth occurs at 40-60 ºC (optimum, 45 ºC), pH 6.0-10.0 (optimum, pH 7.0) and with
0-13% (w/v) NaCl (optimum, 3%). Growth does not occurr under anaerobic conditions
on Marine Agar.
0-13% (w/v) NaCl (optimum, 3%). Growth does not occurr under anaerobic conditions
on Marine Agar.
Isolated from the hydrothermal sediments in Manus Basin in the western Pacific Ocean.
Resistant to polymyxin B and ceftazidime. Susceptible to penicillin, chloramphenicol, furazolidone, compound sulfamethoxazole,
vancomycin, ciprofloxacin, ofloxacin, norfloxacin, midecamycin, erythromycin, minocycline, doxycycline, tetracycline, neomycin,
kanamycin, gentamicin, amikacin, cefoperazone, ceftriaxone, cefuroxime, cefradine, cefamezin, cephalexin, piperacillin, carbenicillin,
ampicillin, oxacillin and clindamycin.
Resistant to polymyxin B and ceftazidime. Susceptible to penicillin, chloramphenicol, furazolidone, compound sulfamethoxazole,
vancomycin, ciprofloxacin, ofloxacin, norfloxacin, midecamycin, erythromycin, minocycline, doxycycline, tetracycline, neomycin,
kanamycin, gentamicin, amikacin, cefoperazone, ceftriaxone, cefuroxime, cefradine, cefamezin, cephalexin, piperacillin, carbenicillin,
ampicillin, oxacillin and clindamycin.
Undetermined.
- Sun QL, Yu C, Luan ZD, Lian C, Hu YH, Sun L. Description of Bacillus kexueae sp. nov. and Bacillus manusensis sp. nov., isolated
from hydrothermal sediments. Int J Syst Evol Microbiol 2018; 68:829-834.
Positive results for acid and alkaline phosphatase, caseinase, catalase, chymotrypsin, cystine arylamidase (weak), aesculin hydrolysis,
esterase (C4), esterase lipase (C8), gelatinase, alpha- and beta-galactosidase, alpha- and beta-glucosidase (weak), leucine
arylamidase, naphthol-AS-BI-phosphohydrolase, Tweens 20 and 80 hydrolysis, acid production from: N-acetylglucosamine, amygdalin,
cellobiose, aesculin, galactose, glucose, glycogen, 2-ketogluconate, lactose, mannitol, maltose, melezitose, ribose, starch, sucrose
and trehalose.
Can utilize as sole carbon source: glucose, mannitol, maltose, potassium gluconate and trisodium citrate.
Negative results for arginine dihydrolase, alpha-fucosidase, beta-glucuronidase, indole production, lipase (C14), alpha-mannosidase,
nitrate reduction, N-acetyl-beta-glucosaminidase, oxidase, starch hydrolysis, trypsin, Tweens 40 and 60 hydrolysis, urease, acid
production from: adonitol, dulcitol, inositol, inulin, D-lyxose, mannose, raffinose, rhamnose, sorbose, sorbitol, turanose, xylitol, methyl
beta-D-xylopyranoside, D- and L-xylose.
No utilization of: mannose, N-acetyl-D-glucosamine, phenylacetic acid, and capric acid.
esterase (C4), esterase lipase (C8), gelatinase, alpha- and beta-galactosidase, alpha- and beta-glucosidase (weak), leucine
arylamidase, naphthol-AS-BI-phosphohydrolase, Tweens 20 and 80 hydrolysis, acid production from: N-acetylglucosamine, amygdalin,
cellobiose, aesculin, galactose, glucose, glycogen, 2-ketogluconate, lactose, mannitol, maltose, melezitose, ribose, starch, sucrose
and trehalose.
Can utilize as sole carbon source: glucose, mannitol, maltose, potassium gluconate and trisodium citrate.
Negative results for arginine dihydrolase, alpha-fucosidase, beta-glucuronidase, indole production, lipase (C14), alpha-mannosidase,
nitrate reduction, N-acetyl-beta-glucosaminidase, oxidase, starch hydrolysis, trypsin, Tweens 40 and 60 hydrolysis, urease, acid
production from: adonitol, dulcitol, inositol, inulin, D-lyxose, mannose, raffinose, rhamnose, sorbose, sorbitol, turanose, xylitol, methyl
beta-D-xylopyranoside, D- and L-xylose.
No utilization of: mannose, N-acetyl-D-glucosamine, phenylacetic acid, and capric acid.
(c) Costin Stoica
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