|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.|
|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.|
|New names of taxa within the classification category phylum|
During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.Published 2022-09-28. Read more...