Veterinary bacteriology: information about important bacteria
|Categories:||Zoonotic; causes hemolysis|
|Etymology:||Genus name: erysipelas thread.|
Species epithet: of red disease.
|Type Strain:||ATCC 19414 = CCUG 221 = NCTC 8163.|
||Small transparent nonpigmented colonies (0.2-1 mm in diameter) with a narrow zone of α-hemolysis on blood agar.|
|Micromorphology:||Nonmotile and short rods (0.5 x 1.5-3.0 µm) with rounded ends, which may also grow as long filaments (about 60 µm in length).|
|Gram +/Gram -:||G+|
|Other Enzymes:||Hippuricase +, tryptophanase -, urease -.|
|Biochemical Tests:||Citrate -, Voges-Proskauer -.|
|Fermentation of carbohydrates:||
Other carbohydrates: ribose -, xylose -.
|Diagnostics:||Culture after enrichment. Confirmation by MALDI-TOF or biochemical tests.|
|16S rRNA Seq.:|
||Five species have been described within the genus Erysipelothrix. E. rhusiopathiae can be confused with Erysipelothrix tonsillarum and their 16S rRNA sequences are almost identical (see the phylogenetic tree in Fig. 43:4).|
|Comment:||Type species for the genus. Is zoonotic.|
|Reference(s):||No. 19, 114, 117|
|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...