VetBact
VetBact logo

VetBact

Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Treponema phagedenis
Categories: Causes hemolysis; motile
Etymology: Genus name: A turning thread
Species epithet: from a cancerous wound
Subspecies epithet: from a cow
Significance:  [Important]   
Taxonomy:
Phylum
Spirochaetes
Class
Spirochaetia
Order
Spirochaetales
Family
Spirochaetaceae 
Genus
Treponema
Type Strain: Not defined
Macromorphology (smell):
   
Micromorphology:
 
Tightly coiled and motile. Length: 10-15 µm, diameter: 0,35-0,40 µm and 7-9 perplasmic flagella (= endoflagella or axial filaments).
Gram +/Gram -:
Catalase/Oxidase:
Spec. Char.:
Disease:Is assumed to contribute to the development of digital dermatitis in cattle
Hosts: Cattle
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
DQ470655 V1 1467  

Taxonomy/phylogeny:
 
About 25 different species have been described within the genus Treponema. There are different opinions among researchers about which should be regarded as separate species or only as subspecies of a certain species. T. phagedenis subsp. vaccae is closely related to Treponema phagedenis subsp. phagedenis and some researchers regard them as a single species. See the phylogenetic tree (Fig. 139:2).
Comment:Note that the species name has not yet been officially approved. The organism should, therefore, be called Treponema sp. or "Treponema phagedenis subsp. vaccae" for the moment. The organism has also been named "Treponema bovis". Other bacteria are possibly also needed for development of the disease.
Reference(s): No. 60
Updated:2016-03-18

News

"Dear child has many names" (call it what you will...)

For a long time, Rhodococcus hoagii was refer­red to Rhodo­coccus equi on VetBact, because we experienced some resistance to the name that is now considered to be the correct one, i.e. Rhodococcus hoagii. Now you can find the bacterium in question under the correct name in VetBact, but you can also find the bacterium when searching for the old name. 

Published 2021-10-10. Read more...

Recently Updated

Recent blog posts


Swedish University of Agricultural Sciences