| Enterococcus quebecensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Genus Enterococcus, Enterococcus
quebecensis Sistek et al. 2012.
quebecensis Sistek et al. 2012.
Gram-positive, ovoid cells, 0.5-1 µm in diameter and arranged in pairs or in short
chains. Non-motile. Non-spore-forming.
chains. Non-motile. Non-spore-forming.
Colonies on sheep-blood agar at 35 ºC are grey-translucent, weakly alpha-haemolytic
and about 1 mm in diameter and are unaffected by the absence or presence of 5%
CO2. Growth is observed at room temperature and at 30 ºC under aerobic conditions.
Growth is also observed at 35 ºC under aerobic as well as anaerobic conditions.
Does not grow at 4 or 45 ºC. The optimal temperature for growth is between room
temperature and 30 ºC. Does not grow in the presence of 6.5% NaCl. Does not
produce extracellular polysaccharide on 5% sucrose agar.
and about 1 mm in diameter and are unaffected by the absence or presence of 5%
CO2. Growth is observed at room temperature and at 30 ºC under aerobic conditions.
Growth is also observed at 35 ºC under aerobic as well as anaerobic conditions.
Does not grow at 4 or 45 ºC. The optimal temperature for growth is between room
temperature and 30 ºC. Does not grow in the presence of 6.5% NaCl. Does not
produce extracellular polysaccharide on 5% sucrose agar.
Isolated from well water in the Province of Quebec (Saint-Malo), Canada.
Undetermined.
- Sistek V, Maheux AF, Boissinot M, Bernard KA, Cantin P, Cleenwerck I, De Vos P, Bergeron MG. Enterococcus ureasiticus sp. nov.
and Enterococcus quebecensis sp. nov., isolated from water. Int J Syst Evol Microbiol 2012; 62:1314-1320.
Positive results for esculin hydrolysis, beta-glucosidase, N-acetyl-beta-glucosaminidase, hippurate hydrolysis, pyroglutamic acid
arylamidase, glycyl-tryptophan arylamidase, beta-mannosidase, acid production from ribose, mannitol, lactose, trehalose, sucrose,
pullulan, maltose, melezitose, methyl beta-D-glucopyranoside and tagatose.
Negative results for alkaline phosphatase, arginine dihydrolase, alanine-phenylalanine-proline arylamidase, catalase,
beta-galactosidase, beta-glucuronidase, alpha-galactosidase, urease, Voges-Proskauer test, acid production from L-arabinose,
D-arabitol, cyclodextrin, sorbitol, raffinose, glycogen or melibiose.
arylamidase, glycyl-tryptophan arylamidase, beta-mannosidase, acid production from ribose, mannitol, lactose, trehalose, sucrose,
pullulan, maltose, melezitose, methyl beta-D-glucopyranoside and tagatose.
Negative results for alkaline phosphatase, arginine dihydrolase, alanine-phenylalanine-proline arylamidase, catalase,
beta-galactosidase, beta-glucuronidase, alpha-galactosidase, urease, Voges-Proskauer test, acid production from L-arabinose,
D-arabitol, cyclodextrin, sorbitol, raffinose, glycogen or melibiose.
(c) Costin Stoica
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