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Taxonomy
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Firmicutes => Bacilli => Lactobacillales => Streptococcaceae => Streptococcus => Abiotrophia defectiva (Bouvet et al. 1989)
Kawamura et al. 1995
Old synonym: Streptococcus defectivus Bouvet et al. 1989
Kawamura et al. 1995
Old synonym: Streptococcus defectivus Bouvet et al. 1989
Gram positive, 0.40-0.55 μm, non-motile cocci. Grouped in pairs or chains.
Alpha-hemolytic colonies on fresh sheep blood agar, max 0.2 mm in diameter.
Growth at 37 °C. Facultatively anaerobic. Growth on complex media:
Trypticase soy agar with 5% sheep blood.
Grows as satellite colonies adjacent to Staphylococcus epiderrnidis.
Growth at 37 °C. Facultatively anaerobic. Growth on complex media:
Trypticase soy agar with 5% sheep blood.
Grows as satellite colonies adjacent to Staphylococcus epiderrnidis.
Isolated from human blood samples
Isolated mostly from the blood of patients with endocarditis or bacteremia (cases are rare).
- Bergey’s Manual of Determinative Bacteriology, 9th ed., 1994.
- Bouvet A., Grimont F. & Grimont P.A.D.: Streptococcus defectivus sp. nov. and Streptococcus adjacens sp. nov., nutritionally
variant streptococci from human clinical specimens. Int. J. Syst. Bacteriol., 1989, 39, 290-294. - Kawamura Y., Hou X.G., Sultana F., Liu S., Yamamoto H. & Ezaki T.: Transfer of Streptococcus adjacens and Streptococcus
defectivus to Abiotrophia gen. nov. as Abiotrophia adiacens comb. nov. and Abiotrophia defectiva comb. nov., respectively. Int.
J. Syst. Bacteriol., 1995, 45, 798-803.
Produces pyrrolidonyl-arylamidase and does not produce alkaline phosphatase.
Produces alpha- and beta-galactosidases. beta-Glucuronidase is not produced.
Glucose, Trehalose are fermented,
Ribose & Inulin are not fermented.
Variable Lactose, Mannitol, Sorbitol & Raffinose acidification.
Hippurate and arginine are not hydrolyzed.
Produces alpha- and beta-galactosidases. beta-Glucuronidase is not produced.
Glucose, Trehalose are fermented,
Ribose & Inulin are not fermented.
Variable Lactose, Mannitol, Sorbitol & Raffinose acidification.
Hippurate and arginine are not hydrolyzed.
(c) Costin Stoica
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