Species/Subspecies: | Fusobacterium necrophorum subsp. necrophorum | |||||||||||||||
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Category: | Causes hemolysis | |||||||||||||||
Etymology: | Genus name: small spindle shaped rod. Species epithet: necrosis producing. Subspecies epithet: see Species epithet. | |||||||||||||||
Significance: | [Very important] | |||||||||||||||
Alternative Species Name(s): | Bacteroides necrophorus, Fusobacterium necrophorum (Biotyp A) | |||||||||||||||
Taxonomy: | Class Fusobacteriia Order Fusobacteriales Family Fusobacteriaceae Genus Fusobacterium |
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Type Strain: | VPI 2891 = ATCC 25286 = CCUG 9994. | |||||||||||||||
Macromorphology (smell):
| Small cream-colored metal shiny colonies. Many strains produce an hemolysis zone on blood agar. Smells like rancid butter (or boiled cabbage). Colonies fluoresce in neon green under long-wave UV-light. | |||||||||||||||
Micromorphology: | Coccoid rods to thin, needle-shaped filaments. Non-motile. | |||||||||||||||
Gram +/Gram -: | G- | |||||||||||||||
Metabolism: | Strictly anaerobic | |||||||||||||||
Catalase/Oxidase: | -/- | |||||||||||||||
Other Enzymes: | Esculinase -, lipase -, Tryptophanase + (= indole +). | |||||||||||||||
Fermentation of carbohydrates: | Butyric acid is produced by fermentation. | |||||||||||||||
Spec. Char.: | Temperature optimum: 37°C. | |||||||||||||||
Disease: |
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Virulence Factors: | Produces a leucotoxin directed against neutrophils and has LPS. | |||||||||||||||
Genome Sequence: |
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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: | Can convert lactic acid to propionic acid. | |||||||||||||||
Reference(s): | No. 24 | |||||||||||||||
Updated: | 2023-03-15 |