| Species/Subspecies: | Fusobacterium necrophorum subsp. funduliforme | ||||||||
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| Category: | Causes hemolysis | ||||||||
| Etymology: | Genus name: small spindle shaped rod. Species epithet: necrosis producing. Subspecies epithet: sausage shaped. | ||||||||
| Significance: | [Of minor importance] | ||||||||
| Alternative Species Name(s): | Fusobacterium necrophorum (Biotype B) | ||||||||
| Taxonomy: | Class Fusobacteriia Order Fusobacteriales Family Fusobacteriaceae Genus Fusobacterium |
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| Type Strain: | Fn524 = ATCC 51357 = CCUG 42162. | ||||||||
| Macromorphology (smell):
| Small greyish and semitranslucent colonies (1-2 mm i diameter), which give hemolysis on FAA plates. | ||||||||
| Micromorphology: | Rodshaped (0,4-0,8 x 1-8 µm), where shorter cells (1-4 µm) are predominant. | ||||||||
| Gram +/Gram -: | G- | ||||||||
| Metabolism: | Obligately anaerobic | ||||||||
| Catalase/Oxidase: | -/? | ||||||||
| Other Enzymes: | Esculinase -, lipase -, Tryptophanase + (= indole +). | ||||||||
| Spec. Char.: | |||||||||
| Disease: | This bacterium is e.g. regarded as a secondary pathogen in ovine foot rot. |
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| Hosts: | Ungulates etc. | ||||||||
| Clinical Picture: | |||||||||
| Virulence Factors: | roduces a leucotoxin directed against neutrophils and has LPS, but not as much as subsp. necrophorum. | ||||||||
| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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Within the genus Fusobacteria, 14 species have been described and 2 of these are divided into 7 sub-species. Fusobacteria are related to genus Streptobacillus, but the latter belongs to another family, namely Leptotrichiaceae. | ||||||||
| Comment: | F. necrophorum subsp. funduliforme is less pathogenic than F. necrophorum subsp. necrophorum. | ||||||||
| Updated: | 2023-03-15 |