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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => 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).
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, non-motile, non-spore-forming, cocci, arranged singly in pairs or short
chains.
chains.
Alpha-haemolytic on sheep & horse blood agar, 0.5-1.0 mm in diameter colonies.
Facultatively anaerobic, optimal growth at 37.0 °C. Growth on : trypticase soy agar with
5% defibrinated sheep or horse blood, Edwards medium (esculin test).
Facultatively anaerobic, optimal growth at 37.0 °C. Growth 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)
Fusbacterium, Bacteroides, Prevotella, E. coli, Arcanobacterium, Pasteurella, Mannheimia)
Glucose, glycogen, lactose, maltose, mannitol, raffinose, trehalose, sorbitol, sucrose,
esculin, alanyl-phenylalanine-proline arylamidase, alpha-glucosidase, beta-
glucosidase, esterase C-4 (weak), leucine arylamidase & phosphoamidase (weak)
are positive.
Catalase, oxidase, D-arabitol, l-arabinose, melibiose, melezitose, methyl beta-D-
glucopyranoside, pullulan, ribose, alkaline phosphatase, chymotrypsin, ester lipase
C8, lipase C14, alpha-fucosidase, beta-galactosidase, beta-glucuronidase, alpha-mannosidase, beta-mannosidase, N-acetyl-
beta-glucosaminidase, pyroglutamic acid arylamidase, trypsin, urease, hippurate hydrolysis & Voges-Proskauer negative.
Acid phosphatase, arginine dihydrolase, a-galactosidase, cystine arylamidase, valine arylamidase & glycyl-tryptophan arylamidase
variable.
(results were obtained using API rapid ID32S and API ZYM systems)
Species is biochemically close to Streptococcus suis and can be differentiated by S. suis mannitol & sorbitol negative reaction and
beta-glucuronidase production.
esculin, alanyl-phenylalanine-proline arylamidase, alpha-glucosidase, beta-
glucosidase, esterase C-4 (weak), leucine arylamidase & phosphoamidase (weak)
are positive.
Catalase, oxidase, D-arabitol, l-arabinose, melibiose, melezitose, methyl beta-D-
glucopyranoside, pullulan, ribose, alkaline phosphatase, chymotrypsin, ester lipase
C8, lipase C14, alpha-fucosidase, beta-galactosidase, beta-glucuronidase, alpha-mannosidase, beta-mannosidase, N-acetyl-
beta-glucosaminidase, pyroglutamic acid arylamidase, trypsin, urease, hippurate hydrolysis & Voges-Proskauer negative.
Acid phosphatase, arginine dihydrolase, a-galactosidase, cystine arylamidase, valine arylamidase & glycyl-tryptophan arylamidase
variable.
(results were obtained using API rapid ID32S and API ZYM systems)
Species is biochemically close to Streptococcus suis and can be differentiated by S. suis mannitol & sorbitol negative reaction and
beta-glucuronidase production.
- MD Collins, RA Hutson, L Hoyles, E Falsen, N Nikolaitchouk and G Foster: Streptococcus ovis sp. nov., isolated from sheep.
IJSEM Vol 51, 1147-1150. - Richard Facklam: What Happened to the Streptococci: Overview of Taxonomic and Nomenclature Changes. Clin Microbiol
Rev. 2002 October; 15(4): 613–630.
(c) Costin Stoica
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