| Bifidobacterium longum subsp. infantis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium longum subsp. infantis (Reuter 1963) Mattarelli, Bonaparte, Pot, Biavati, 2008.
Old synonyms: Bifidobacterium infantis Reuter 1963; Bifidobacterium liberorum Reuter 1963; Bifidobacterium lactentis Reuter 1963.
Bifidobacterium longum subsp. infantis (Reuter 1963) Mattarelli, Bonaparte, Pot, Biavati, 2008.
Old synonyms: Bifidobacterium infantis Reuter 1963; Bifidobacterium liberorum Reuter 1963; Bifidobacterium lactentis Reuter 1963.
Cells are small, thin, spherical or bubble shaped, often containing central granules,
resembling an eye, with no branching tendency.
resembling an eye, with no branching tendency.
Anaerobic. Optimum growth temperature is 36-38 ºC. No growth at 20 or 46.5 ºC.
Is the predominant bifidobacteria in the faeces of breast-fed infants.
Isolated from faeces of suckling calves and from human vagina.
Isolated from faeces of suckling calves and from human vagina.
Non-pathogenic for man or animals.
- 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. - Rogosa M. 1975. Genus III. Bifidobacterium Orla-Jensen 1924. In: Buchanan RE & Gibbons NE (ed). Bergey’s manual of
determinative bacteriology, Eight Edition, The Williams & Wilkins Company, Baltimore, 669-676. - Mattarelli P, Bonaparte C, Pot B, Biavati B, 2008.Proposal to reclassify the three biotypes of Bifidobacterium longum as three
subspecies: Bifidobacterium longum subsp. longum subsp. nov., Bifidobacterium longum subsp. infantis comb. nov. and
Bifidobacterium longum subsp. suis comb. nov. Int J Syst Evol Microbiol 58, 767-772. - Sakata S, Kitahara M, Sakamoto M, Hayashi H, Fukuyama M, Benno Y, 2002. Unification of Bifidobacterium infantis and
Bifidobacterium suis as Bifidobacterium longum. Int J Syst Evol Microbiol 52, 1945-1951. - Yanokura E, Oki K, Makino H, Modesto M, Pot B, Mattarelli P, Biavati B, Watanabe K, 2015. Subspeciation of Bifidobacterium longum
by multilocus approaches and amplified fragment length polymorphism: description of B. longum subsp. suillum subsp. nov.,
isolated from the faeces of piglets. Syst Appl Microbiol 38, 305-314.
Positive results for esculin hydrolysis, acid production from D-fructose, D-galactose,
D-glucose, D-glucuronate, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose
and turanose.
Negative results for catalase, indole production, nitrate reduction, acid production from adonitol, L-arabinose, amygdalin, amylopectin,
amylose, dextran, dulcitol, erythritol, D-fucose, D-galactosamine, gentibiose, gluconate, glycerol, glycogen, alpha-methyl-D-mannoside,
pectin, porcine gastric mucin, rhamnose, sorbose, D-tagatose, xylitol and xylan.
Variable results for acid production from cellobiose, L-fucose, D-glucosamine, esculin, inulin, inositol, D-mannitol, D-mannose,
melezitose, salicin, D-sorbitol, starch, trehalose and D-xylose.
D-glucose, D-glucuronate, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose
and turanose.
Negative results for catalase, indole production, nitrate reduction, acid production from adonitol, L-arabinose, amygdalin, amylopectin,
amylose, dextran, dulcitol, erythritol, D-fucose, D-galactosamine, gentibiose, gluconate, glycerol, glycogen, alpha-methyl-D-mannoside,
pectin, porcine gastric mucin, rhamnose, sorbose, D-tagatose, xylitol and xylan.
Variable results for acid production from cellobiose, L-fucose, D-glucosamine, esculin, inulin, inositol, D-mannitol, D-mannose,
melezitose, salicin, D-sorbitol, starch, trehalose and D-xylose.
(c) Costin Stoica
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