Streptococcus dentapri
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus dentapri
Takada et al. 2010.
Member of the "Mutans group".
No reaction with Lancefield antisera.
Gram-positive, nonspore-forming cocci, occurring in pairs or short chains.
Nonhemolytic, small and white, 0.75-1.0 mm in diameter colonies on blood agar at
37 ºC after 24 hours incubation. Small, darkblue, crinkled colonies on MS agar
(mitis-salivarius agar). Facultatively anaerobic.
Isolated from the oral cavity of wild boars. Resistant to bacitracin.
Undetermined. Produces glucosyltransferase involved in dental plaque formation (a water-insoluble glucan is produced by this enzyme
from sucrose).
  1. Kazuko Takada, Kazuhiko Hayashi, Yutaka Sato, and Masatomo Hirasawa. Streptococcus dentapri sp. nov., isolated from the wild
    boar oral cavity. Int J Syst Evol Microbiol April 2010 60:820-823.
Most tests were performed using Rapid ID32 Strep, API 50CH and API ZYM:

Positive results for aesculin hydrolysis, alanine-phenylalanine-proline arylamidase, alpha-glucosidase, beta-glucosidase, acid
phosphatase, alkaline phosphatase, leucine arylamidase, valine arylamidase, cystine arylamidase, Voges-Proskauer test,
naphthol-AS-BI-phosphohydrolase, acid production from: N-acetylglucosamine, amygdalin, arbutin, aesculin, cellobiose, fructose,
glucose, maltose, D-mannose, D-mannitol, D-sorbitol,  salicin, sucrose, and trehalose.

Negative for arginine dihydrolase, catalase, beta-glucuronidase, alpha-galactosidase, beta-galactosidase, hippurate hydrolysis,
N-acetyl-beta-glucosaminidase, acid production from: galactose, lactose, D-ribose, raffinose, melibiose, and tagatose.
(c) Costin Stoica
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