Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Enterococcaceae => Enterococcus => Enterococcus cecorum (Devriese et al. 1983)
Williams et al. 1989.
Historical synonym: Streptococcus cecorum Devriese et al. 1983.
Williams et al. 1989.
Historical synonym: Streptococcus cecorum Devriese et al. 1983.
Gram positive 1 to 1.3 um in diameter, grouped in pairs, short chains, or small groups.
Non-motile, non-spore-forming.
Non-motile, non-spore-forming.
Colonies are circular, entire edges, low convex, partially translucent, not pigmented
and reach 1 to 2 mm in diameter after 20 hours and 2 to 3 mm after 2 days at 37 °C in
CO2 in air. Growth is slower and less abundant in air. The strains show good growth
anaerobically in an H2-CO2 atmosphere. Uniform turbidity with a small deposit is
formed in brain heart infusion broth and Todd-Hewitt broth. Alpha hemolytic on sheep
blood agar.
Good growth occurs at 45 °C, but no growth occurs at 1O °C. No growth in in 6.5%
NaCl, on Slanetz–Bartley medium and kanamycin esculin azide agar. Growth at pH
9.6 is slower and less abundant than growth at pH 7.0. Slight inhibition by 40% bile.
and reach 1 to 2 mm in diameter after 20 hours and 2 to 3 mm after 2 days at 37 °C in
CO2 in air. Growth is slower and less abundant in air. The strains show good growth
anaerobically in an H2-CO2 atmosphere. Uniform turbidity with a small deposit is
formed in brain heart infusion broth and Todd-Hewitt broth. Alpha hemolytic on sheep
blood agar.
Good growth occurs at 45 °C, but no growth occurs at 1O °C. No growth in in 6.5%
NaCl, on Slanetz–Bartley medium and kanamycin esculin azide agar. Growth at pH
9.6 is slower and less abundant than growth at pH 7.0. Slight inhibition by 40% bile.
Isolated from the ceca of chickens. Cannot survive heating at 60 °C for 30 min.
The cecal strains were non-pathogenic in chickens experimental infections.
- Devriese, L. A., Dutta, G. N., Farrow, J. A. E., Van De Kerckhove, A., Phillips, B. A. Streptococcus cecorum, a New Species
Isolated from Chickens. Int J Syst Bacteriol 1983 33: 772-776. - Validation of the Publication of New Names and New Combinations Previously Effectively Published Outside the IJSB: List No.
31.Int J Syst Bacteriol 1989 39: 495-497. - Pavel Švec 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.
Positive results for esculin hydrolysis. Alkaline phosphatase, leucine arylaminidase, beta-glucuronidase, Voges-Proskauer, acid
production from: N-acetylglucosamine, amygdalin, arbutin, cellobiose, fructose, galactose, glucose, beta-gentiobiose, inulin, lactose,
maltose, mannose, melezitose, melibiose, raffinose, ribose, salicin, sucrose & trehalose. Gas is not formed from glucose.
Negative results for gelatinase, tyrosinase, acid production from adonitol, arabinose, arabitol, dulcitol, erythritol, fucose,
alpha-methyl-D-glucoside, glycerol, inositol, lyxose, mannitol, alpha-methyl-D-mannoside, L-rhamnose, sorbitol, L-sorbose,
turanose, xylitol, xylose, or beta-methyl-xyloside.
Variable results for hydrolysis of starch, alpha- and beta-galactosidase.
production from: N-acetylglucosamine, amygdalin, arbutin, cellobiose, fructose, galactose, glucose, beta-gentiobiose, inulin, lactose,
maltose, mannose, melezitose, melibiose, raffinose, ribose, salicin, sucrose & trehalose. Gas is not formed from glucose.
Negative results for gelatinase, tyrosinase, acid production from adonitol, arabinose, arabitol, dulcitol, erythritol, fucose,
alpha-methyl-D-glucoside, glycerol, inositol, lyxose, mannitol, alpha-methyl-D-mannoside, L-rhamnose, sorbitol, L-sorbose,
turanose, xylitol, xylose, or beta-methyl-xyloside.
Variable results for hydrolysis of starch, alpha- and beta-galactosidase.
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