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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Nocardia asteroides
Etymology: Genus name: named after the French veterinarian Edmond Nocard.
Species epithet: star like.
Significance:  [Important]   
Taxonomy:
Phylum
Actinobacteria
Class
Actinobacteria
Order
Corynebacteriales
Family
Nocardiaceae 
Genus
Nocardia
Type Strain: ATCC 19247 = CCUG 10073 = NCTC 11293.
Macromorphology (smell): Small and often irregular colonies (0.3-3 mm in diameter), which are yellowish due to pigment production.
Micromorphology: Rod shaped but forms also branched filaments.
Gram +/Gram -:
Metabolism: Aerobic
Catalase/Oxidase:+/?
Other Enzymes: Esculinase -
Fermentation of carbohydrates: N. asteroides does not ferment carbohydrates since it is an obligate aerobic bacterium.
Spec. Char.:
Reservoir: N. asteroides is naturally occuring in dust, soil, water, and on plants.
Disease:Canine nocardiosis etc.
Hosts: Dog, cattle, pig, sheep
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
X84850 ATCC 19247T 1 412  

Taxonomy/phylogeny:
 
About 100 species have been described within genus Nocardia, which is closely related to the following genera: Rhodococcus och Crossiella.
Comment:N. asteroides is an opportunistic pathogen for animals (inkluding humans).
Updated:2017-02-02

News

"Dear child has many names" (call it what you will...)

For a long time, Rhodococcus hoagii was refer­red to Rhodo­coccus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name. 

Published 2021-10-10. Read more...

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