Streptococcus ovis
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus ovis  Collins
et al. 2001. It is a possible member of  "mutans group" (can form acid in mannitol and sorbitol broths like the other members of this
group).
Gram-positive, nonmotile, nonspore-forming, cocci,  arranged singly in pairs or short
chains.
Alpha-haemolytic on sheep and horse blood agar, 0.5-1.0 mm in diameter colonies.
Facultatively anaerobic, optimal growth at 37.0 ºC. Grow on : trypticase soy agar with
5% defibrinated sheep or horse blood, Edwards medium (esculin test).
Isolated from sheep clinical samples.
Uncertain. May be a cause of ovine pneumonia and arthritis. Isolated from clinical samples together with other germs (Actinomyces
Fusbacterium,  Bacteroides, Prevotella, E. coli, Arcanobacterium, Pasteurella, Mannheimia
).
Most results were obtained using API rapid ID32S and API ZYM systems.

Positive results for esculin hydrolysis, alanyl-phenylalanine-proline arylamidase, alpha-glucosidase, beta-glucosidase, esterase C-4
(weak), leucine arylamidase, phosphoamidase (weak), acid production from: glucose, glycogen, lactose, maltose, mannitol,
raffinose, trehalose, sorbitol, and sucrose.

Negative results for catalase, oxidase, alkaline phosphatase, chymotrypsin, ester lipase C8, lipase C14, alpha-fucosidase,
beta-galactosidase, beta-glucuronidase, hippurate hydrolysis, alpha-mannosidase, beta-mannosidase, N-acetyl-
beta-glucosaminidase, pyroglutamic acid arylamidase, trypsin, urease, Voges-Proskauer reaction, acid production from: D-arabitol,
L-arabinose, melibiose, melezitose, methyl beta-D-glucopyranoside, pullulan, and ribose.

Variable results for acid phosphatase, arginine dihydrolase, alpha-galactosidase, cystine arylamidase, valine arylamidase, and
glycyl-tryptophan arylamidase.

Species is biochemically close to
Streptococcus suis and can be differentiated  by S. suis mannitol and sorbitol negative reaction, and
beta-glucuronidase activity.
  1. M.D. Collins, R.A. Hutson, L. Hoyles, E. Falsen, N. Nikolaitchouk and G. Foster: Streptococcus ovis sp. nov., isolated from sheep.
    IJSEM Vol 51, 1147-1150.
  2. Richard Facklam: What Happened to the Streptococci: Overview of Taxonomic and Nomenclature Changes. Clin Microbiol Rev.
    2002 October; 15(4): 613–630.
  3. 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.
  4. A. I. Vela,  G. Mentaberre,  I. Marco,  R. Velarde,  S. Lavín,  L. Dominguez, J. F. Fernandez-Garayzabal. Streptococcus rupicaprae sp.
    nov., isolated from a Pyrenean chamois (Rupicapra pyrenaica). Int J Syst Evol Microbiol, August 2011 61: 1989-1993.
  5. Zaina Kadri,  Mohamed Amar,  Mouna Ouadghiri,  Margo Cnockaert,  Maarten Aerts,  Omar El Farricha, Peter Vandamme.
    Streptococcus moroccensis sp. nov. and Streptococcus rifensis sp. nov., isolated from raw camel milk. Int J Syst Evol Microbiol,
    July 2014 64: 2480-2485.
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