| Streptococcus massiliensis |
Unknown.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus
massiliensis Glazunova et al. 2006. Lancefield group G.
massiliensis Glazunova et al. 2006. Lancefield group G.
Gram-positive cocci, 0.3-0.7 μm in diameter, nonsporulated, nonmotile, grouped in
pairs or short chains.
pairs or short chains.
Colonies on sheep-blood agar are circular, white to greyish, shiny, convex,
non-hemolytic and 1-2 mm in diameter after 48 h at 37 ºC in CO2 - enriched
atmosphere. Growth also occurs in aerobic, microaerophilic and anaerobic
atmospheres. Optimum growth temperature is 37 ºC but growth is observed at 25-37
ºC. Growth occurs in the presence of 2% NaCl.
non-hemolytic and 1-2 mm in diameter after 48 h at 37 ºC in CO2 - enriched
atmosphere. Growth also occurs in aerobic, microaerophilic and anaerobic
atmospheres. Optimum growth temperature is 37 ºC but growth is observed at 25-37
ºC. Growth occurs in the presence of 2% NaCl.
Isolated from human blood sample. Resistant to optochine.
- Olga O. Glazunova, Didier Raoult and Veronique Roux; Streptococcus massiliensis sp. nov., isolated from a patient blood culture.
IJSEM May 2006 vol. 56 no. 5 1127-1131.
Positive for hippurate hydrolysis, arginine dihydrolase, leucine aminopeptidase, alanyl-
phenylalanylproline arylamidase, glycyl-tryptophan arylamidase alkaline phosphatase,
acid production from maltose.
Negative for catalase, acetoin production, beta-glucosidase, beta-galactosidase, beta-glucuronidase, alpha-galactosidase,
urease, pyrrolidonyl arylamidase, N-acetyl-beta-glucosaminidase, beta-mannosidase, acid production from: arabinose, mannitol,
sorbitol, lactose, trehalose, inulin, raffinose, glycogen, sucrose, pullulan, tagatose, methyl beta-D-glucopyranoside, melibiose, ribose,
starch and melezitose.
phenylalanylproline arylamidase, glycyl-tryptophan arylamidase alkaline phosphatase,
acid production from maltose.
Negative for catalase, acetoin production, beta-glucosidase, beta-galactosidase, beta-glucuronidase, alpha-galactosidase,
urease, pyrrolidonyl arylamidase, N-acetyl-beta-glucosaminidase, beta-mannosidase, acid production from: arabinose, mannitol,
sorbitol, lactose, trehalose, inulin, raffinose, glycogen, sucrose, pullulan, tagatose, methyl beta-D-glucopyranoside, melibiose, ribose,
starch and melezitose.
(c) Costin Stoica
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