Streptococcus macacae
Taxonomy
Morphology
Cultural characteristics
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Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus macacae  
Beighton et al. 1984. Member of the "Mutans group".

No reaction with Lancefield antisera.
Gram-positive cocci, grouped in chains. Alpha-hemolytic.
Transparent and 1 to 2 mm in diameter colonies, after 3 days of incubation. A white, 1
mm in diameter, erose, crumbly, type of colony may occur.
Growth at 37.0 ºC, no growth at  45 ºC. Grow poorly in air, but growth is stimulated
by the presence of CO
2. Grow on : Trypticase soy agar, Sheep blood agar,
Brain-hearth infusion agar / broth; grow with 40% bile and 0.25% optocin. No growth
at pH 9.6 or in 6.5% NaCl media.
Isolated from the dental plaque of monkeys (Macaca fascicularis) & humans. Susceptible to bacitracin (20 μg/ml).
Unknown (isolated primarily from dental plaque samples). A possible cause of endocarditis.
  1. Holt J.G., Krieg N.R., Sneath P.H.A., Staley J.T. and Williams S.T., 1994. Bergey's Manual of Determinative Bacteriology, Ninth
    Edition, Williams & Wilkins, A Waverly Company, Baltimore, pp 527-558.
  2. Beighton D., Hayday H., Russell R.R.B. & Whiley R.A.: Streptococcus macacae sp. nov., from dental plaque of monkeys (Macaca
    fascicularis). Int. J. Syst. Bacteriol., 1984, 34, 332-335.
  3. Sato Y.,  Okamoto-Shibayama K.,   Kagami A. &  Yamamoto Y.: Does Streptococcus macacae Reside in Human Mouths? Bull
    Tokyo Dent Coll, VOL.47;NO.2;PAGE.86-88(2006).
  4. 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.
  5. Robert A. Whiley and Jeremy M. Hardie, 2009. Genus I. Streptococcus Rosenbach 1884, 22AL. In: (Eds.) P.D. Vos, G. Garrity, D.
    Jones, N.R. Krieg, W. Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3:
    The Firmicutes, Springer, 655-711.
Positive results for esculin hydrolysis, starch hydrolysis,  Voges-Proskauer reaction, acid production from: N-acetyl glucosamine,
amygdalin, cellobiose, fructose, glucose, galactose, maltose, mannitol, sucrose, trehalose & raffinose.

Negative results for arginine hydrolysis, H
2O2 production, urease, acid production from: adonitol, arabinose, dextrin, glycerol, glycogen,
inositol, inulin, melezitose, melibiose, ribose, starch, sorbose, xylitol & xylose.

Sorbitol is fermented slowly, starch and blue dextran are weakly hydrolyzed.
(c) Costin Stoica
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