Bifidobacterium rousetti
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,  
Bifidobacterium rousetti
Modesto, Satti, Watanabe, Puglisi, Morelli, Huang, Liou, Miyashita, Tamura, Saito, Mori, Huang, Sciavilla,
Sandri, Spiezio, Vitali, Cavalieri, Perpetuini, Tofalo, Bonetti, Arita and Mattarelli, 2021.
Gram-positive rods of various shapes and branched with ‘Y’ at both sides.
Non-motile. Non-spore-forming.
Colonies are white, opaque, smooth, 1-2 mm in diameter after 3 days of anaerobic
incubation on TPY agar or MRS agar supplemented with L-cysteine hydrochloride (0.5
g/l), acetic acid (1 ml/l) and mupirocin (0,1 g/l). Grows at 22-48 ºC, optimally at 37 ºC,
at pH 4.0-7.5 (optimally at pH 7.0). Non-haemolytic. Facultatively anaerobic.
Isolated from faeces of Egyptian fruit bat Rousettus aegyptiacus.
Undetermined.
  1. Modesto M, Satti M, Watanabe K, Puglisi E, Morelli L, Huang C-H, Liou J-S, Miyashita M, Tamura T, Saito S, Mori K, Huang L, Sciavilla
    P, Sandri C, Spiezio C, Vitali F, Cavalieri D, Perpetuini G, Tofalo R, Bonetti A, Arita M and Mattarelli P, 2019. Characterization of
    Bifidobacterium species in faeces of the Egyptian fruit bat: Description of B. vespertilionis sp. nov. and B. rousetti sp. nov. Syst Appl
    Microbiol 42: 126017.
  2. Modesto M, Satti M, Watanabe K, Puglisi E, Morelli L, Huang C-H, Liou J-S, Miyashita M, Tamura T, Saito S, Mori K, Huang L, Sciavilla
    P, Sandri C, Spiezio C, Vitali F, Cavalieri D, Perpetuini G, Tofalo R, Bonetti A, Arita M and Mattarelli P, 2021. Corrigendum to
    Characterization of Bifidobacterium species in faeces of the Egyptian fruit bat: Description of B. vespertilionis sp. nov. and B. rousetti
    sp. nov. [Syst Appl Microbiol 42 (2019) 126017]Syst Appl Microbiol 44: 126169.
Positive results for alanine arylamidase, arginine arylamidase, alpha-arabinosidase, arginine dihydrolase (weak), aesculin
hydrolysis, alpha- and beta-galactosidase, alpha-glucosidase, beta-glucosidase (weak), glycine arylamidase, histidine arylamidase,
leucine arylamidase, phenylalanine arylamidase, proline arylamidase, serine arylamidase, tyrosine arylamidase, urease, acid
production from: L-arabinose, D-fructose, D-galactose, gluconate, D-glucose, 2- and 5-ketogluconate (weak), lactose (weak), maltose
(weak), D-mannitol, D-mannose, raffinose, D-ribose (weak), D-sorbitol, starch (weak), and turanose.

Negative results for alkaline phosphatase, catalase, alpha-fucosidase, indole production, nitrate reduction,
N-acetyl-beta-glucosaminidase, oxidase, acid production from: D-adonitol, amygdalin, D-arabinose, arbutin, cellobiose, dulcitol,
aesculin, L- and D-fucose, gentibiose, glycogen, glycerol, inositol, inulin, D-lyxose, melezitose, melibiose, methyl
alpha-D-glucopyranoside, methyl alpha-D-mannopyranoside, methyl beta-D-xylopyranoside, N-acetylglucosamine, L-rhamnose,
salicin, L-sorbose, sucrose, trehalose, D- and L-xylose and the other API 50 CHL tests.
(c) Costin Stoica
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