| Species/Subspecies: | Nocardia asteroides | ||||||||
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| Etymology: | Genus name: named after the French veterinarian Edmond Nocard. Species epithet: star like. | ||||||||
| Significance: | [Important] | ||||||||
| Taxonomy: | Class Actinomycetia Order Mycobacteriales Family Nocardiaceae Genus Nocardia |
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| 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.: | |||||||||
| Special Media: | |||||||||
| Reservoir: | N. asteroides is naturally occuring in dust, soil, water, and on plants. | ||||||||
| Disease: | Canine nocardiosis etc. |
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| Hosts: | Dog, cattle, pig, sheep | ||||||||
| Clinical Picture: | |||||||||
| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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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: | 2023-03-02 |