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: | 2022-03-07 |
News |
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New families introduced within the order Enterobacterales![]() 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... |