| Bifidobacterium longum subsp. suillum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium longum subsp. suillum Yanokura, Oki, Makino, Modesto, Pot, Mattarelli, Biavati, Watanabe 2015.
Bifidobacterium longum subsp. suillum Yanokura, Oki, Makino, Modesto, Pot, Mattarelli, Biavati, Watanabe 2015.
Gram-positive rods of various shapes, 0.4-0.7 x 1.5-3 µm, sometimes curved, swollen
and branched. Non-motile. Non-spore-forming.
and branched. Non-motile. Non-spore-forming.
Colonies are convex, smooth, opaque, white, with entire margins, 2-3 mm in diameter.
Fluid cultures are turbid, clearing after 1-2 days, with dispersible sediment.
Anaerobic. Optimum growth temperature is 25-37 ºC. No growth at 45 or 46.5 ºC,
variable growth at 20 ºC. Grows at pH 5.3-9.4 (optimum pH 7-8); variable at pH 9.5.
Fluid cultures are turbid, clearing after 1-2 days, with dispersible sediment.
Anaerobic. Optimum growth temperature is 25-37 ºC. No growth at 45 or 46.5 ºC,
variable growth at 20 ºC. Grows at pH 5.3-9.4 (optimum pH 7-8); variable at pH 9.5.
Isolated from faeces of piglets.
Non-pathogenic for man or animals.
- 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 L-arabinose, D-fructose, D-galactose, D-glucose, methyl
alpha-D-glucopyranoside, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose, turanose and D-xylose.
Negative results for catalase, oxidase, urease, acid production from D-arabinose, amygdalin, adonitol,D- or L-arabitol, arbutin,
cellobiose, dextran, dulcitol, esculin, erythritol, L-fucose, D-fucose, glycerol, gluconate, 2- or 5-ketogluconate, D-glucuronate, glycogen,
inositol, inulin, D-lyxose, D-mannitol, melezitose, alpha-methyl-D-mannoside, methyl alpha-D-mannopyranoside, N-acethyl
glucosamine, pectin, porcine gastric mucin, rhamnose, salicin, D-sorbitol, L-sorbose, starch, D-tagatose, trehalose, L-xylose, xylan,
xylitol and methyl beta-D-xylopyranoside.
Variable results for acid production from amylopectin, amylose, D-galactosamine, gentibiose, D-glucosamine and D-mannose.
alpha-D-glucopyranoside, D-lactose, maltose, melibiose, raffinose, D-ribose, sucrose, turanose and D-xylose.
Negative results for catalase, oxidase, urease, acid production from D-arabinose, amygdalin, adonitol,D- or L-arabitol, arbutin,
cellobiose, dextran, dulcitol, esculin, erythritol, L-fucose, D-fucose, glycerol, gluconate, 2- or 5-ketogluconate, D-glucuronate, glycogen,
inositol, inulin, D-lyxose, D-mannitol, melezitose, alpha-methyl-D-mannoside, methyl alpha-D-mannopyranoside, N-acethyl
glucosamine, pectin, porcine gastric mucin, rhamnose, salicin, D-sorbitol, L-sorbose, starch, D-tagatose, trehalose, L-xylose, xylan,
xylitol and methyl beta-D-xylopyranoside.
Variable results for acid production from amylopectin, amylose, D-galactosamine, gentibiose, D-glucosamine and D-mannose.
(c) Costin Stoica
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