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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

New families introduced within the order Enterobacterales
Phylogenetic tree for the order <i>Enterobacteriales</i>.

The order Enterobacterales (formerly called Enterobacteriales) previously consisted of bacteria with different properties and phylogenetically, these bacteria were far apart. In order for the taxonomy to be more in line with phylogeny, some of these bacteria have, therefore, been sorted into 6 new families.

Published 2022-04-13. Read more...

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