| Bifidobacterium longum subsp. iuvenis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium longum subsp. iuvenis Modesto, Ngom-Bru, Scarafile, Bruttin, Pruvost, Sarker, Ahmed, Sakwinska, Mattarelli and
Duboux 2023.
Bifidobacterium longum subsp. iuvenis Modesto, Ngom-Bru, Scarafile, Bruttin, Pruvost, Sarker, Ahmed, Sakwinska, Mattarelli and
Duboux 2023.
Gram-positive rods, 0.4-0.5 / 1.5-2.5 µm, occurring singly. Non-spore-forming.
Non-motile.
Non-motile.
Colonies are smooth, convex, beige, circular with entire edges, and 1 mm in diameter
on MRS agar after 3 days incubation at 37 ºC under anaerobic conditions. Growth is
good under anaerobic and microaerophilic conditions and weak under aerobic
condition. Optimum growth temperature is 37 ºC, range 25-48 ºC. Grows at pH 3.5-8.5
(optimum pH 5.5).
on MRS agar after 3 days incubation at 37 ºC under anaerobic conditions. Growth is
good under anaerobic and microaerophilic conditions and weak under aerobic
condition. Optimum growth temperature is 37 ºC, range 25-48 ºC. Grows at pH 3.5-8.5
(optimum pH 5.5).
Isolated from Bangladeshi weaning infants.
Undetermined.
- Modesto M, Ngom-Bru C, Scarafile D, Bruttin A, Pruvost S, Sarker SA, Ahmed T, Sakwinska O, Mattarelli P and Duboux S, 2023.
Bifidobacterium longum subsp. iuvenis subsp. nov., a novel subspecies isolated from the faeces of weaning infants. Int J Syst Evol
Microbiol 73:006013.
Positive results for acid production from: L-arabinose, D-fructose (weak), L-fucose (weak), D-galactose, D-glucose, methyl
alpha-D-glucoside (weak), D-lactose, maltose, D-mannose, melibiose, methyl alpha-D-mannoside (weak), raffinose, ribose, salicin
(weak), sucrose, turanose and xylose.
Negative results for catalase, oxidase, acid production from: adonitol, amygdalin, cellobiose, dulcitol, aesculin, erythritol, D-fucose,
gluconate, 2- and 5-ketogluconate, D-glucosamine, D-glucuronate, glycerol, inositol, inulin, D-mannitol, melezitose,
alpha-methyl-D-mannoside, rhamnose, D-sorbitol, starch, trehalose and xylan.
alpha-D-glucoside (weak), D-lactose, maltose, D-mannose, melibiose, methyl alpha-D-mannoside (weak), raffinose, ribose, salicin
(weak), sucrose, turanose and xylose.
Negative results for catalase, oxidase, acid production from: adonitol, amygdalin, cellobiose, dulcitol, aesculin, erythritol, D-fucose,
gluconate, 2- and 5-ketogluconate, D-glucosamine, D-glucuronate, glycerol, inositol, inulin, D-mannitol, melezitose,
alpha-methyl-D-mannoside, rhamnose, D-sorbitol, starch, trehalose and xylan.
(c) Costin Stoica
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