Actinomyces oricola
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces,
Actinomyces oricola Hall, Collins, Hutson, Inganas, Falsen and Duerden, 2003.

Species description is based on a single isolate.
Gram-positive rods; branching and filaments forms may occur. Non-motile.
Non-spore-forming. Non-acid-fast.
Colonies are pinpoint, white, breadcrumb-like, non-haemolytic on Fastidious
Anaerobe Agar with 5% horse blood after 2 days of anaerobic incubation. Facultative
anaerobic but grows best under anaerobic conditions
. Grows at 37 ºC.
Isolated from a human dental abscess; habitat is unknown.
Isolated from human dental abscess.
  1. V. Hall, M.D. Collins, R.A. Hutson, E. Inganas, E. Falsen and B.I. Duerden, 2003. Actinomyces oricola sp. nov., from a human
    dental abscess. Int J Syst Evol Microbiol. 53, 1515-1518.
Description is based on API Rapid ID32Strep, API Rapid ID32A and API Coryne results.

Positive results for
esculin hydrolysis, alpha-galactosidase, alpha- and beta-glucosidase, leucine arylamidase, pyrazinamidase, acid
production from
amygdalin (weak reaction), cellobiose, fructose, D-glucose and salicin.

Negative results for
arginine dihydrolase, catalase, alpha-fucosidase, gelatin hydrolysis, beta-glucuronidase, N-acetyl-beta-
glucosaminidase, hippurate hydrolysis, indole production, lecithinase, lipase C14, nitrate reduction, pyrrolidonyl arylamidase, starch
hydrolysis, urease,
Voges-Proskauer test, acid production from arabinose, D-arabitol, cyclodextrin, glycogen, methyl-beta-D-
glucopyranoside, lactose, mannitol, mannose, melezitose, melibiose, ribose, sorbitol, tagatose and xylose.


Variable results for
alkaline phosphatase, beta-galactosidase, acid production from maltose, raffinose, sucrose and trehalose.
(c) Costin Stoica
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