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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

The revised taxonomy of the mollicutes

The revised taxonomy of mollicutes (mycoplasmas) has now been introduced on VetBact, which means that many of the species have been given new genus names or moved to another higher taxon. 

Published 2021-11-25. Read more...

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