Streptococcus uberis (S. parauberis)
Streptococcus uberis on Sheep Blood Agar
  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. Diernhofer K.: Asculinbouillon als Hilfsmittel fur die Differenzierung von Euter-und Milchstreptokokken bei
    Massenuntersuchungen. Milchwirtschaftliche Forschungen, 1932, 13, 368-374
  3. 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.
  4. 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.
  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.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus uberis  
Diernhofer 1932.
Streptococcus parauberis Williams and Collins 1990 is the previous Streptococcus uberis type II.
Non-groupable by Lancefield antisera.
Gram-positive, nonmotile, nonspore-forming cocci, occurring in pairs or chains.
Colonies may be alpha-hemolytic on sheep blood agar. Facultatively anaerobic,
optimal growth at 35-37.0 ºC. Do not grow on 6.5% NaCl medium or at 9.6 pH. Grow
on Trypticase soy agar with 5% defibrinated sheep blood. Growth is slow or absent at
10 ºC and does not occur at 45 ºC. Does not survive heating at 65 ºC for 30 minutes.
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.
Positive results for esculin hydrolysis, arginine hydrolysis, leucine arylamidase,
acidification of amygdalin, arbutin, cellobiose, fructose, beta-gentiobiose, galactose,
glucose, inulin,lactose, maltose, mannose, mannitol, N-acetylglucosamine, ribose,
saccharose, salicin, sorbitol & trehalose.

Negative results for catalase, DN-ase, acidification of adonitol, arabitol, erythritol,
fucose, glycerol, glycogen, gluconate,  2- or 5-ketogluconate, inositol, melibiose,
alpha-methyl-D-glucoside, apha-methyl-D-mannoside, rhamnose, sorbose,
turanose, xylitol & xylose.

Variable results for alpha-galactosidase, alkaline phosphatase, pyrrolidonyl
arylamidase, Voges-Proskauer reaction, acidification of arabinose, dulcitol,
melezitose, raffinose, D-tagatose & starch.

Diferrences between
S. uberis & S. parauberis:
  Hippurate
hydrolysis
Beta-glucuronidase
CAMP test
Growth at
10 °C
S. uberis
+
variable
variable
-
S. parauberis
variable
-
-
+(weak)
(c) Costin Stoica
Antibiogram
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