Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Enterococcaceae => Enterococcus => Enterococcus ratti Teixeira et al. 2001.
React weakly with Lancefield group D antiserum.
Old synonym: Enterococcus rattus Uhl et al 1998.
React weakly with Lancefield group D antiserum.
Old synonym: Enterococcus rattus Uhl et al 1998.
Gram-positive cocci, grouped in pairs or short chains. Non-motile.
Colonies on sheep-blood agar are non-pigmented and alpha-haemolytic or
non-haemolytic . Facultatively anaerobic. Growth occurs at 10 °C, at 45 °C and in broth
containing 6.5% NaCl.
non-haemolytic . Facultatively anaerobic. Growth occurs at 10 °C, at 45 °C and in broth
containing 6.5% NaCl.
Isolated from intestines and feces of neonatal rats with diarrhoea. Susceptible to Vancomycin and Efrotomycin.
Associated with diarrhoeal disease in rats.
- 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. - L M Teixeira, M G Carvalho, M M Espinola, A G Steigerwalt, M P Douglas, D J Brenner, and R R Facklam. Enterococcus
porcinus sp. nov. and Enterococcus ratti sp. nov., associated with enteric disorders in animals. Int J Syst Evol Microbiol
September 2001 51:1737-43. - Etheridge ME, Vonderfecht SL. Diarrhea caused by a slow-growing Enterococcus-like agent in neonatal rats. Lab Anim Sci.
1992 Dec;42(6):548-50.
Positive reactions are usually weak or delayed. Ferments sugars without gas.
Positive results for pyrrolidonyl arylamidase, leucine aminopeptidase, hydrolysis of
aesculin in the presence of bile, hydrolysis of arginine, acid production from: glucose,
maltose & D-ribose.
Negative results for pyruvate utilization, acid production from: L-arabinose, glycerol, inulin, D-mannitol, melibiose, methyl
alpha-D-glucopyranoside, D-raffinose, D-sorbitol, L-sorbose, sucrose, D-trehalose& D-xylose.
Variable results for Voges-Proskauer reaction, hippurate hydrolysis & acidification of lactose.
Positive results for pyrrolidonyl arylamidase, leucine aminopeptidase, hydrolysis of
aesculin in the presence of bile, hydrolysis of arginine, acid production from: glucose,
maltose & D-ribose.
Negative results for pyruvate utilization, acid production from: L-arabinose, glycerol, inulin, D-mannitol, melibiose, methyl
alpha-D-glucopyranoside, D-raffinose, D-sorbitol, L-sorbose, sucrose, D-trehalose& D-xylose.
Variable results for Voges-Proskauer reaction, hippurate hydrolysis & acidification of lactose.
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