Enterococcus gallinarum colonies on Blood Agar
E. gallinarum cells, Gram-staining
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Genus Enterococcus, Enterococcus gallinarum
(
Bridge and Sneath 1982) Collins et al. 1984. Lancefield group D.

Basonym:
Streptococcus gallinarum Bridge and Sneath 1982.
Gram-positive, ovoid cells, elongated in the direction of the chain, grouped in pairs or
short chains. Non-motile.
Colonies on blood agar or nutrient agar are circular, smooth, and entire, beta -
hemolytic on horse blood agar. Non-pigmented. Strains grow at 10 and 45 ºC, and in
6.5% NaCl.
Most strains do not survive heating at 60 ºC for 30 minutes but survive heating at 60
ºC for 15 minutes. Grows slowly on thallous acetate-tetrazolium agar at room
temperature, producing deep pink colonies.
Isolated from intestines of domestic fowls, turkey meat products and stool samples.
Isolated from eggs used for vaccine production (admin note).
Unknown. May be involved in nosocomial infections. One human endocarditis reported.
  1. Pavel Svec and  Luc A. Devriese, 2009: Genus I. Enterococcus (ex Thiercelin and Jouhaud 1903) Schleifer and Kilpper-Bälz 1984,
    32VP in Bergey’s Manual of Systematic Bacteriology, Second Edition, Volume Three, Vos, P.D.; Garrity, G.; Jones, D.; Krieg, N.R.;
    Ludwig, W.; Rainey, F.A.; Schleifer, K.-H.; Whitman, W.B. (Eds.), pp 594-606.
  2. M. D. Collins, D. Jones, J. A. E. Farrow, R. Kilpper-Balz, and K. H. Schleifer. Enterococcus avium nom. rev., comb. nov.; E.
    casseliflavus nom. rev., comb. nov.; E. durans nom. rev., comb. nov.; E. gallinarum comb. nov.; and E. malodoratus sp. nov. Int J
    Syst Bacteriol April 1984 34:220-223.
Positive results for arginine dehydrolase, alpha-galactosidase, beta-galactosidase,
esculin hydrolysis, hippurate hydrolysis, Voges-Proskauer test,
pyrrolidonylarylamidase, arginine dehydrolase, acid production from: ribose,
mannitol, lactose, trehalose, raffinose, amygdalin, arbutin, fructose, glucose,
galactose, mannose, maltose, melibiose & sucrose.

Negative results for alkaline phosphatase, starch hydrolysis, acid production from:
dulcitol, erythritol, fucose, inositol, 2- or 5-keto-gluconate, D-lyxose, melezitose &
xylitol.

Variable results for beta-glucuronidase, acid production from: arabinose, inulin,
glycerol, glycogen, rhamnose, sorbitol, starch & xylose.
Enterococcus gallinarum
(c) Costin Stoica
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