|Species/Subspecies:||Fusobacterium necrophorum subsp. necrophorum|
|Etymology:||Genus name: small spindle shaped rod.|
Species epithet: necrosis producing.
Subspecies epithet: see Species epithet.
|Alternative Species Name(s):||Bacteroides necrophorus, Fusobacterium necrophorum (Biotyp A)|
|Type Strain:||VPI 2891 = ATCC 25286 = CCUG 9994.|
||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-|
|Other Enzymes:||Esculinase -, lipase -, Tryptophanase + (= indole +).|
|Fermentation of carbohydrates:||Butyric acid is produced by fermentation.|
|Spec. Char.:||Temperature optimum: 37°C.|
|Disease:||Liver abscesses and interdigital necrobacillos (foot rot etc). This bacterium is regarded as a secondary pathogen in ovine foot rot.
|Hosts:||Cattle, sheep (and humans)|
|Virulence Factors:||Produces a leucotoxin directed against neutrophils and has LPS.|
|16S rRNA Seq.:|
||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.|
|The revised taxonomy of the mollicutes|
The revised taxonomy of mollicutes (mycoplasmas) has now been introduced on VetBact, which means that many of the species have been given new genus names or moved to another higher taxon.Published 2021-11-25. Read more...