| Bifidobacterium pseudocatenulatum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium pseudocatenulatum Scardovi, Trovatelli, Biavati and Zani 1979.
Bifidobacterium pseudocatenulatum Scardovi, Trovatelli, Biavati and Zani 1979.
Gram-positive irregularly rods, 0.6-0.7 X 2-5 µm, arranged in pairs which form angles
with protuberances, knobs, or short branches; occasionally bifid forms or pairs of
cells with swollen ends. Some strains show distorted chains of small coccoid and
irregular cells or long, branched, hyphal-like cells. Non-motile. Non-spore-forming.
with protuberances, knobs, or short branches; occasionally bifid forms or pairs of
cells with swollen ends. Some strains show distorted chains of small coccoid and
irregular cells or long, branched, hyphal-like cells. Non-motile. Non-spore-forming.
colonies are smooth, convex, entire margins, cream to white, glistening, and soft
consistency. Anaerobic. Grows at 28-42 ºC (optimum 39-41 ºC), pH 6.5-7.9 (optimum
pH 6.0-7.2). No growth at pH 4.5 or 8.0.
consistency. Anaerobic. Grows at 28-42 ºC (optimum 39-41 ºC), pH 6.5-7.9 (optimum
pH 6.0-7.2). No growth at pH 4.5 or 8.0.
Abundant in sewage, feces of breast- and bottle-fed infants, feces of adult humans and in the feces of suckling calves.
Undetermined.
- Biavati B, Mattarelli P, 2012. Genus I. Bifidobacterium Orla-Jensen 1924. In: Parte et al. (ed). Bergey’s manual of systematic
bacteriology: The Actinobacteria,Part A and B. Springer, New York, 171-206. - Scardovi V, Trovatelli B, Biavati B, and Zani G, 1979. Bifidobacterium cuniculi, Bifidobacterium choerinum, Bifidobacterium boum
and Bifidobacterium pseudocatenulatum: four new species and their deoxyribonucleic acid homology relationships. Int J Syst
Bacteriology 29(4), 291-311. - Morita H, Nakano A, Onoda H, Toh H, Oshima K et al., 2011. Bifidobacterium kashiwanohense sp. nov., isolated from healthy infant
faeces. Int J Syst Evol Microbiol 61, 2610-2615.
Positive results for acid phosphatase, alpha- and beta-galactosidase, alpha- and beta-glucosidase, leucine arylamidase, Voges-
Proskauer test, acid production from amylopectin, amylose, L-arabinose, dextrin, D-fructose, D-galactose, D-glucose (without gas
production), D-lactose, maltose, melibiose, raffinose, D-ribose, starch, sucrose, and D-xylose.
Negative results for alkaline phosphatase, catalase, cystine arylamidase, esterase lipase (C8), esterase (C4), alpha-fucosidase,
beta-glucuronidase, gelatin liquefaction, indole production, lipase (C14), alpha-mannosidase, nitrate reduction, N-acetyl-beta-
glucosaminidase, naphthol-AS-BI-phosphohydrolase, trypsin, alpha-chymotrypsin, valine arylamidase, acid production from D-
fucose, D-galactosamine, D-glucosamine, D-glucuronate, glycerol, inulin, D-mannitol, melezitose, pectin, porcine gastric mucin, and
rhamnose.
Ammonia is not produced from urea or arginine.
Variable results for acid production from cellobiose, L-fucose, gluconate (strains from calves are negative) with gas production (CO2) ,
D-mannose, salicin, D-sorbitol (strains isolated from feces of infants are all positive), trehalose and xylan.
Proskauer test, acid production from amylopectin, amylose, L-arabinose, dextrin, D-fructose, D-galactose, D-glucose (without gas
production), D-lactose, maltose, melibiose, raffinose, D-ribose, starch, sucrose, and D-xylose.
Negative results for alkaline phosphatase, catalase, cystine arylamidase, esterase lipase (C8), esterase (C4), alpha-fucosidase,
beta-glucuronidase, gelatin liquefaction, indole production, lipase (C14), alpha-mannosidase, nitrate reduction, N-acetyl-beta-
glucosaminidase, naphthol-AS-BI-phosphohydrolase, trypsin, alpha-chymotrypsin, valine arylamidase, acid production from D-
fucose, D-galactosamine, D-glucosamine, D-glucuronate, glycerol, inulin, D-mannitol, melezitose, pectin, porcine gastric mucin, and
rhamnose.
Ammonia is not produced from urea or arginine.
Variable results for acid production from cellobiose, L-fucose, gluconate (strains from calves are negative) with gas production (CO2) ,
D-mannose, salicin, D-sorbitol (strains isolated from feces of infants are all positive), trehalose and xylan.
(c) Costin Stoica
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