Actinomyces slackii
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces,
Actinomyces slackii Dent and Williams 1986.
Gram-positive rods, 0.8 / 0.56 µm. Non-motile. Non-spore-forming.
Colonies on horse 6% blood agar are white, convex, smooth, shiny, translucent, up to
2 mm in diameter after 3-5 days of aerobic incubation at 37 ºC
. Grows aerobically or
i
n 80% nitrogen-10% hydrogen-10% CO2 atmosphere. Liquid media: CO2 stimulates
growth.
Isolated from the dental plaque of dairy cattle.
Undetermined.
  1. Dent V. E. and Williams R.A.D., 1986. Actinomyces slackii sp. nov. from dental plaque of dairy cattle. Int J Syst Bacteriol Vol.36, No.
    3, 392-395.
Positive results for catalase, acid production from D-glucose, raffinose and salicin.

Negative results for
esculin hydrolysis, acid production from L-arabinose, amygdalin, cellobiose, glycerol, inositol, D-mannitol,  
melezitose, L-rhamnose, sorbitol and D-xylose.


Variable results for acid production from
inulin, lactose, D-mannose, D-ribose, sucrose (saccharose) and trehalose.
(c) Costin Stoica
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