Veterinary bacteriology: information about important bacteria
|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 bacterial phyla|
The taxonomic category phylum was previously not regulated by the International Code of Nomenclature of Prokaryotes (ICNP), but now this has changed and it was decided to revise the names of bacterial phyla. All phyla must be written in italics (which has been done on VetBact also before) and have the ending -ota.Published 2023-03-01. Read more...
|The taxonomy of chlamydias|
Species within the family Chlamydiaceae were previously divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned to the genus Chlamydia and this change has now been incorporated in VetBactPublished 2023-03-15. Read more...