| Species/Subspecies: | Corynebacterium freneyi | ||||||||
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| Category: | In the normal flora | ||||||||
| Etymology: | Genus name: club-shaped bakterium (bacterium means small rod). Species epithet: named after the French microbiologist Jean Freney. | ||||||||
| Significance: | C. freneyi is probably not pathogenic, but can be detected in the environment of cattle and pigs. The bacterium has also been detected in urogenitalia from these animal species and in tank milk. [Of minor importance] |
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| Taxonomy: | Class Actinomycetia Order Mycobacteriales Family Corynebacteriaceae Genus Corynebacterium |
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| Type Strain: | ISPB 6695110 = CCUG 45704 | ||||||||
| Macromorphology (smell):
| The small colonies (about 2 mm in diameter) are grayish white or yellowish. They are dry, rough and have a typically wrinkled morphology. | ||||||||
| Micromorphology: | Club-shaped nonmotile rods. | ||||||||
| Gram +/Gram -: | |||||||||
| Metabolism: | Facultatively anaerobic. | ||||||||
| Catalase/Oxidase: | +/? | ||||||||
| Other Enzymes: | Esculinase -, urease - | ||||||||
| Fermentation of carbohydrates: | D-glucose + lactose v maltose + L-rhamnose ? sucrose + L-arabinose ? cellobiose ? D-mannitol (-) salicin ? trehalose + glycerol ? inulin ? raffinose ? D-sorbitol ? starch ? |
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| Spec. Char.: | |||||||||
| Special Media: | |||||||||
| Reservoir: | Many strains have been isolated from the female genital tract, but patogenicity has not been confirmed. | ||||||||
| Disease: | Infections of this bacterium in humans are rare. |
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| Hosts: | Human | ||||||||
| Clinical Picture: | |||||||||
| 16S rRNA Seq.: |
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| Taxonomy/phylogeny: | 176 species and 13 subspecies are described within the genus Corynebacterium. However, not all names have been approved yet and some species have been affiliated to another genus. The genus Corynebacterium is closely related to the genera Mycobacterium, Nocardia, Rhodococcus and Crossiella. | ||||||||
| Reference(s): | No. 152, 153 | ||||||||
| Updated: | 2023-03-02 |