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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus => Streptococcus orisuis Takada and Hirasawa 2007.
Member of the "mutans group".
Member of the "mutans group".
Gram positive, 0.5–0.75 um, non-motile, non-spore-forming, cocci, arranged in pairs
or short chains.
or short chains.
Non-haemolytic on blood agar, white, small colonies; 0.75-1.0 mm in diameter.
Facultatively anaerobic (microaerophilic), optimal growth at 37.0 °C. Grow on :
Ttrypticase soy agar with 5% defibrinated horse blood, Mitis salivarius agar.
Facultatively anaerobic (microaerophilic), optimal growth at 37.0 °C. Grow on :
Ttrypticase soy agar with 5% defibrinated horse blood, Mitis salivarius agar.
Isolated from swine oral cavity.
Oral bacteria, cariogenic activity is favorized by an adhesive, insoluble glucan produced from sucrose..
- Kazuko Takada and Masatomo Hirasawa: Streptococcus orisuis sp. nov., isolated from the pig oral cavity. Int J Syst Evol
Microbiol 57 (2007), 1272-1275. - TAKADA Kazuko ; IGARASHI Mitsuhiko ; YAMAGUCHI Yasutaka ; HIRASAWA Masatomo: New serotype of mutans streptococci
isolated from pig oral cavity. Microbiology and immunology 2008, vol. 52, no2, pp. 64-68.
Acid is produced from D-glucose, galactose, D-fructose, D-mannose, mannitol,
sorbitol, N-acetylglucosamine, amygdalin, arbutin, aesculin, salicin, cellobiose,
maltose, lactose, melibiose, sucrose, trehalose, inulin, D-raffinose, beta-gentiobiose,
methyl beta-D-glucopyranoside & D-tagatose.
VP, alanine phenylalanine, proline arylamidase, beta-glucosidase,
alpha-glucosidase, alpha-galactosidase, acid phosphatase, leucine arylamidase,
valine arylamidase, cystine arylamidase are positive.
Catalase negative
sorbitol, N-acetylglucosamine, amygdalin, arbutin, aesculin, salicin, cellobiose,
maltose, lactose, melibiose, sucrose, trehalose, inulin, D-raffinose, beta-gentiobiose,
methyl beta-D-glucopyranoside & D-tagatose.
VP, alanine phenylalanine, proline arylamidase, beta-glucosidase,
alpha-glucosidase, alpha-galactosidase, acid phosphatase, leucine arylamidase,
valine arylamidase, cystine arylamidase are positive.
Catalase negative
(c) Costin Stoica
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