| Enterococcus ratti |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Genus Enterococcus, Enterococcus ratti
Teixeira et al. 2001.
Reacts weakly with Lancefield group D antiserum.
Old synonym: Enterococcus rattus Uhl et al 1998.
Teixeira et al. 2001.
Reacts weakly with Lancefield group D antiserum.
Old synonym: Enterococcus rattus Uhl et al 1998.
Gram-positive cocci, grouped in pairs or short chains. Nonmotile.
Colonies on sheep-blood agar are nonpigmented and alpha-hemolytic or
nonhemolytic. Facultatively anaerobic. Growth occurs at 10 ºC, at 45 ºC and in broth
containing 6.5% NaCl.
nonhemolytic. Facultatively anaerobic. Growth occurs at 10 ºC, at 45 ºC 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: - 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, and 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, and D-xylose.
Variable results for Voges-Proskauer reaction, hippurate hydrolysis, and 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, and 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, and D-xylose.
Variable results for Voges-Proskauer reaction, hippurate hydrolysis, and acidification of lactose.
(c) Costin Stoica
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