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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus => Streptococcus hyointestinalis Devriese et al. 1988
Gram-positive cocci, grouped in chains.
Colonies are transparent, 1 to 2.5 mm in diameter after 1-3 days of incubation,
circular with entire edges and narrow zones of alpha hemolysis on blood agar.
Optimum growth at 37 °C, facultatively anaerobic.
Grow on media:
Trypticase soy agar with defibrinated sheep blood
Brain heart infusion agar.
circular with entire edges and narrow zones of alpha hemolysis on blood agar.
Optimum growth at 37 °C, facultatively anaerobic.
Grow on media:
Trypticase soy agar with defibrinated sheep blood
Brain heart infusion agar.
Isolated from the small and large intestines (colon) of pigs.
Is part of the intestinal microflora of swine.
- Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994.
- Devriese L.A., Kilpper-Balz R. & Schleifer K.H.: Streptococcus hyointestinalis sp. nov. from the gut of swine. Int. J. Syst. Bacteriol.,
1988, 38, 440-441.
Catalase, beta-glucuronidase, beta-galactosidase, pyrrolidonylarylamidase,
arginine dehydrolase, hippurate , hyaluronidase negative. Not resistant to 6.5% NaCl
or 40% bile.
No acid produced from glycerol, erytritol, arabinose, ribose, xylose, adonitol, a-methylxyloside, sorbose, rhamnose, dulcitol, inositol,
mannitol, sorbitol, glycogen, xylitol, D-turanose, L-lyxose, D-tagatose, L-fucose, arabitol, gluconate, and 2- and 5-ketogluconate.
Amylase, alkaline phosphatase, leucine arylamidase, Voges-Proskauer & esculin positive.
Acid produced from glucose, fructose, mannose, galactose, lactose, N-acetylglucosamine, arbutin, salicin, maltose, saccharose,
trehalose & starch.
Alpha-galactosidase, beta-gentiobiose, raffinose, amygdalin & cellobiose variable
arginine dehydrolase, hippurate , hyaluronidase negative. Not resistant to 6.5% NaCl
or 40% bile.
No acid produced from glycerol, erytritol, arabinose, ribose, xylose, adonitol, a-methylxyloside, sorbose, rhamnose, dulcitol, inositol,
mannitol, sorbitol, glycogen, xylitol, D-turanose, L-lyxose, D-tagatose, L-fucose, arabitol, gluconate, and 2- and 5-ketogluconate.
Amylase, alkaline phosphatase, leucine arylamidase, Voges-Proskauer & esculin positive.
Acid produced from glucose, fructose, mannose, galactose, lactose, N-acetylglucosamine, arbutin, salicin, maltose, saccharose,
trehalose & starch.
Alpha-galactosidase, beta-gentiobiose, raffinose, amygdalin & cellobiose variable
(c) Costin Stoica
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