| Species/Subspecies: | Actinomyces viscosus | ||||||||
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| Etymology: | Genus name: Greek actino ray, mykes fungus (referring to the radiating appearance of microcolonies). Species epithet: sticky. | ||||||||
| Significance: | [Of minor importance] | ||||||||
| Taxonomy: | Class Actinomycetia Order Actinomycetales Family Actinomycetaceae Genus Actinomyces |
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| Type Strain: | ATCC 15987 = CCUG 14476 = NCTC 10951 | ||||||||
| Macromorphology (smell): | Medium sized, round, white and viscous kolonies (O.5-5 mm in diameter). | ||||||||
| Micromorphology: | Small bent and nonmotile rods (diameter: 0.2-1.0 µm), sometimes branching filaments up to 50 µm | ||||||||
| Gram +/Gram -: | G+ | ||||||||
| Metabolism: | Facultatively anaerobic, but needs 10% CO2 to grow anaerobically. | ||||||||
| Catalase/Oxidase: | +/V | ||||||||
| Other Enzymes: | DNase -, tryptophanase -, urease V | ||||||||
| Biochemical Tests: | Methyl red +, Voges-Proskauer - | ||||||||
| Fermentation of carbohydrates: | D-glucose + lactose + maltose + L-rhamnose - sucrose + L-arabinose - cellobiose - D-mannitol - salicin (-) trehalose v glycerol - inulin (-) raffinose (+) D-sorbitol - starch v |
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| Spec. Char.: | |||||||||
| Special Media: | |||||||||
| Disease: | Canine actinomycosis |
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| Hosts: | Dog | ||||||||
| Clinical Picture: | |||||||||
| Genome Sequence: |
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| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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The genus Actinomyces is composed of about 40 species, which are related to the genera Actinobaculum and Trueperella. | ||||||||
| Comment: | The species definition has been changed and it is only strains belonging to the former serovar I that should be regarded as A. viscosus. | ||||||||
| Updated: | 2023-03-02 |