Actinomyces denticolens
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces,
Actinomyces denticolens Dent and Williams 1984.
Gram-positive rods, 0.7 / 5.0 µm. Non-motile. Non-spore-forming.
Colonies on horse blood agar are slightly pink (anaerobic) or white (aerobic), convex,
smooth and circular. Grows in BHI broth at 37 ºC. Not haemolytic. Facultative
anaerobic.
Isolated from the dental plaque of cattle and sow chronic (pyo)granulomatous mastitis.
May be involved in chronic mastitis and dental plaque.
  1. Dent V.E., & Williams R.A.D., 1984. Actinomyces denticolens Dent & Williams sp. nov.: a new species from the dental plaque of
    cattle. Journal of Applied Bacteriology 56, 183-192.
  2. 2018 Culture Collection University of Gothenburg, accessed on 2/17/2019. https://www.ccug.se
Non-acid-fast.
Most results are based on API ZYM (bioMerieux) results.

Positive results for esculin hydrolysis, beta-galactosidase, alpha-glucosidase, nitrate reduction, acid production from:
D-glucose,
lactose, maltose, raffinose, salicin & sucrose.


Negative results for alkaline phosphatase, catalase, ester
ase C4, alpha-fucosidase, beta-glucuronidase, N-acetyl-beta-
glucosaminidase, lipase C16, alpha-mannosidase, acid production from:
L-arabinose, sorbitol, trehalose & D-xylose.

Variable results for acid phosphatase, alpha-galactosidase, beta-glucosidase, acid production from:
amygdalin, cellobiose, glycerol,  
inositol, inulin, mannitol, mannose, melezitose, rhamnose (weak reaction) & ribose.
(c) Costin Stoica
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