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
- 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