| Bifidobacterium aesculapii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium aesculapii Modesto, Michelini, Stefanini, Ferrara, Tacconi, Biavati, and Mattaraelli 2016.
Bifidobacterium aesculapii Modesto, Michelini, Stefanini, Ferrara, Tacconi, Biavati, and Mattaraelli 2016.
Gram-positive rods of various shapes in TPY broth coiled or ring shaped or forming a
‘Y’ shape at both ends. Non-motile. Non-spore-forming.
‘Y’ shape at both ends. Non-motile. Non-spore-forming.
Colonies are circular with entire margins, white, opaque, smooth and 1.7-2.5 mm in
diameter on TPY agar after 3 days of anaerobic incubation. Non-haemolytic. Growth
temperature 25-42 ºC, optimum 35-37 ºC. Grows at pH 4.5-7.0, optimum pH 6.5-7.0.
Microaerophilic; can grow in milk under aerobic, microaerophilic and anaerobic
conditions.
diameter on TPY agar after 3 days of anaerobic incubation. Non-haemolytic. Growth
temperature 25-42 ºC, optimum 35-37 ºC. Grows at pH 4.5-7.0, optimum pH 6.5-7.0.
Microaerophilic; can grow in milk under aerobic, microaerophilic and anaerobic
conditions.
Isolated from he faeces of infant common marmosets (Callithrix jacchus L.) kept in animal houses in Italy.
Undetermined.
- Michelini S, Modesto M, Filippini G, Spiezio C, Sandri C, Biavati B, Pisi A, Mattarelli P 2016. Bifidobacterium aerophilum sp. nov.,
Bifidobacterium avesanii sp. nov. and Bifidobacterium ramosum sp. nov.: three noval taxa from the faeces of cotton-top tamarin
(Saguinus oedipus L.). Syst Appl Microbiol 39: 229-236. - Modesto, Michelini, Stefanini, Ferrara, Tacconi, Biavati, and Mattaraelli 2016. Bifidobacterium aesculapii sp. nov., from the faeces of
the baby common marmoset (Callithrix jacchus). Int J Syst Evol Microbiol 64, 2819-2827.
Description is based mostly on API 20A, API 20E and API 50 CHL (bioMerieux) results.
Positive results for alkaline phosphatase, arginine arylamidase, esculin hydrolysis, alpha- and beta-glucosidase (weakly),
beta-galactosidase, glycine arylamidase (weakly), phenylalanine arylamidase, proline arylamidase, urease, acid production from
L-arabinose, arbutin, esculin, D-glucose, gentibiose, 2-ketogluconate (weakly), D-lactose, maltose, melezitose, melibiose, D-ribose,
salicin, sorbose, D-turanose and D-xylose.
Negative results for alanine arylamidase, catalase, citrate utilization, alpha-arabinosidase, alpha-fucosidase, alpha-galactosidase,
beta-glucuronidase, H2S production, histidine arylamidase, indole, leucine arylamidase, lysine decarboxylase, nitrate reduction,
N-acetyl-beta-glucosaminidase, ornithine decarboxylase, oxidase, serine arylamidase, tyrosine arylamidase, acid production from
D-adonitol, amygdalin, D-arabinose, L-arabitol, dulcitol, erythritol, methyl alpha-D-glucopyranoside, inositol, methyl
alpha-D-mannopyranoside, N-acetylglucosamine and L-xylose.
Variable results for arginine dihydrolase, acid production from cellobiose, D-fructose, D-galactose, gluconate, glycogen, glycerol,
inulin, D-mannitol, D-mannose, raffinose, rhamnose, D-sorbitol, starch, sucrose, trehalose and xylitol.
Positive results for alkaline phosphatase, arginine arylamidase, esculin hydrolysis, alpha- and beta-glucosidase (weakly),
beta-galactosidase, glycine arylamidase (weakly), phenylalanine arylamidase, proline arylamidase, urease, acid production from
L-arabinose, arbutin, esculin, D-glucose, gentibiose, 2-ketogluconate (weakly), D-lactose, maltose, melezitose, melibiose, D-ribose,
salicin, sorbose, D-turanose and D-xylose.
Negative results for alanine arylamidase, catalase, citrate utilization, alpha-arabinosidase, alpha-fucosidase, alpha-galactosidase,
beta-glucuronidase, H2S production, histidine arylamidase, indole, leucine arylamidase, lysine decarboxylase, nitrate reduction,
N-acetyl-beta-glucosaminidase, ornithine decarboxylase, oxidase, serine arylamidase, tyrosine arylamidase, acid production from
D-adonitol, amygdalin, D-arabinose, L-arabitol, dulcitol, erythritol, methyl alpha-D-glucopyranoside, inositol, methyl
alpha-D-mannopyranoside, N-acetylglucosamine and L-xylose.
Variable results for arginine dihydrolase, acid production from cellobiose, D-fructose, D-galactose, gluconate, glycogen, glycerol,
inulin, D-mannitol, D-mannose, raffinose, rhamnose, D-sorbitol, starch, sucrose, trehalose and xylitol.
(c) Costin Stoica
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