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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus => Streptococcus oligofermentans Tong et al. 2003.
Member of the "Mitis group".
Member of the "Mitis group".
Gram positive cocci, non-motile, non-spore-forming, 0.7 um in diameter, arranged in
short chains.
short chains.
Alpha-haemolytic, rough, dark yellow, 0.5–1.0 mm in diameter colonies (24 h).
Facultatively anaerobic, optimal growth at 37.0 °C. Growth at 10 & 45 °C is negative.
Growth on : trypticase soy agar with defibrinated sheep blood, BHI blood agar.
Facultatively anaerobic, optimal growth at 37.0 °C. Growth at 10 & 45 °C is negative.
Growth on : trypticase soy agar with defibrinated sheep blood, BHI blood agar.
Isolated from dental plaque and saliva of caries-free humans
Oral bacteria. May cause endocarditis.
- Tong H., Gao X. & Dong X.: Streptococcus oligofermentans sp. nov., a noval oral isolate from caries-free humans. Int. J. Syst.
Evol. Microbiol., 2003, 53, 1101-1104. - Huichun Tong; Wei Chen; Merritt Justin ; Fenqxia Qi; Wenyuan Shi; Xiuzhu Dong (1): Streptococcus oligofermentans inhibits
Streptococcus mutans through conversion of lactic acid into inhibitory H2O2 : a possible counteroffensive strategy for
interspecies competition. Molecular microbiology, 2007, vol. 63, no3, pp. 872-880. - Matta M, Gousseff M, Monsel F, Poyart C, Diebold B, Podglajen I, Mainardi JL.: First case of Streptococcus oligofermentans
endocarditis determined based on sodA gene sequences after amplification directly from valvular samples. J Clin Microbiol.
2009 Mar;47(3):855-6.
Acid is produced from sucrose, D-glucose, mannose & maltose.
Mannitol, salicin, sorbitol, arabinose, inulin, melibiose, cellobiose, arbutin,amygdalin,
ribose, starch & glycogen are not fermented.
Acid production from lactose, trehalose & raffinose is variable.
Voges-Proskauer, hydrolysis of esculin, ADH, alkaline phosphatase, alpha & beta-
galactosidase are negative.
Hydrolysis of hippurate is positive.
Glucose fermentation results exclusively in lactic acid production which may be degraded to hydrogen peroxide (H2O2).
Mannitol, salicin, sorbitol, arabinose, inulin, melibiose, cellobiose, arbutin,amygdalin,
ribose, starch & glycogen are not fermented.
Acid production from lactose, trehalose & raffinose is variable.
Voges-Proskauer, hydrolysis of esculin, ADH, alkaline phosphatase, alpha & beta-
galactosidase are negative.
Hydrolysis of hippurate is positive.
Glucose fermentation results exclusively in lactic acid production which may be degraded to hydrogen peroxide (H2O2).
(c) Costin Stoica
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