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Species/Subspecies: Actinomyces viscosus
Etymology: Genus name: Greek actino ray, mykes fungus (referring to the radiating appearance of microcolonies).
Species epithet: sticky.
Significance:  [Of minor importance]   
Taxonomy:
PhylumClassOrderFamilyGenus
ActinobacteriaActinobacteriaActinomycetalesActinomycetaceaeActinomyces
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-glucoselactosemaltoseL-rhamnosesucrose
+++-+
L-arabinosecellobioseD-mannitolsalicintrehalose
---(-)v
glycerolinulinraffinoseD-sorbitolstarch
-(-)(+)-v
Other carbohydrates: Xylose -
Spec. Char.:
Hosts: Dog
Disease (Swedish):Aktinomykos
Disease (English):Canine actinomycosis
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
Ongoing C505 3 133 750  

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AJ234053 CCUG 34288 1371  

Taxonomy/phylogeny:
 Actinomyces viscosus
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:2017-05-10
 

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