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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus => Streptococcus uberis Diernhofer 1932.
Streptococcus parauberis Williams and Collins 1990 is the previous Streptococcus uberis type II.
Streptococcus parauberis Williams and Collins 1990 is the previous Streptococcus uberis type II.
Gram positive, non-motile, non-spore-forming, cocci.
Colonies may be alpha-haemolytic on sheep blood agar. Facultatively anaerobic,
optimal growth at 35-37.0 °C. Do not grow on 6.5% NaCl medium or at 9.6 pH. Grow
on Trypticase soy agar with 5% defibrinated sheep blood.
optimal growth at 35-37.0 °C. Do not grow on 6.5% NaCl medium or at 9.6 pH. Grow
on Trypticase soy agar with 5% defibrinated sheep blood.
Isolated from animals (nasal samples, milk)
It is a cause of bovine mastitis, also may be involved in septicaemia, encephalitis or abortus (bovines, horses).
Can produce bacteriocin-like inhibitory substances to closely related bacterial species.
Can produce bacteriocin-like inhibitory substances to closely related bacterial species.
Esculin hydrolysis, ADH, leucine arylamidase, acidification of amygdalin, arbutin,
cellobiose, fructose, beta-gentiobiose, galactose, glucose, lactose, maltose, mannose,
mannitol, N-acetylglucosamine, saccharose, salicin, sorbitol & trehalose are positive.
Catalase, DN-ase, acidification of adonitol, arabitol, erythritol, fucose, glycerol,
glycogen, gluconate, 2-keto-gluconate, 5-keto-gluconate, inositol, melibiose,
alpha-methyl-D-glucoside, apha-methyl-D-mannoside, rhamnose, sorbose, turanose, xylitol & xylose are negative.
Alpha-galactosidase, phosphatase alcaline, pyrrolidonyl-arylamidase, VP, acidification of starch, arabinose, dulcitol, melezitose,
inulin, raffinose, ribose & D-tagatose are variable.
Diferrences between S. uberis & parauberis:
cellobiose, fructose, beta-gentiobiose, galactose, glucose, lactose, maltose, mannose,
mannitol, N-acetylglucosamine, saccharose, salicin, sorbitol & trehalose are positive.
Catalase, DN-ase, acidification of adonitol, arabitol, erythritol, fucose, glycerol,
glycogen, gluconate, 2-keto-gluconate, 5-keto-gluconate, inositol, melibiose,
alpha-methyl-D-glucoside, apha-methyl-D-mannoside, rhamnose, sorbose, turanose, xylitol & xylose are negative.
Alpha-galactosidase, phosphatase alcaline, pyrrolidonyl-arylamidase, VP, acidification of starch, arabinose, dulcitol, melezitose,
inulin, raffinose, ribose & D-tagatose are variable.
Diferrences between S. uberis & parauberis:
- J. G.Holt et al., 1994. Begey’s manual of Determinative Bacteriology, 9-edition, Williams & Wilkins.
- Diernhofer K.: Asculinbouillon als Hilfsmittel fur die Differenzierung von Euter-und Milchstreptokokken bei
Massenuntersuchungen. Milchwirtschaftliche Forschungen, 1932, 13, 368-374 - Williams A.M. & Collins M.D.: Molecular taxonomic studies on Streptococcus uberis types I and II. Description of Streptococcus
parauberis sp. nov. J. Appl. Bacteriol., 1990, 68, 485-490. - Ruth E. Wirawan,, Kara M. Swanson, Torsten Kleffmann, Ralph W. Jack & John R. Tagg: Uberolysin: a novel cyclic bacteriocin
produced by Streptococcus uberis. Microbiology 153 (2007), 1619-1630.
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