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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Treponema pedis
Categories: Causes hemolysis; motile
Etymology: Genus name: a turning thread
Species epithet: of the foot, referring to the source of isolation
Significance:  [Important]   
Taxonomy:
Phylum
Spirochaetes
Class
Spirochaetia
Order
Spirochaetales
Family
Spirochaetaceae 
Genus
Treponema
Type Strain: T3552B = DSM 18691 = NCTC 13403
Macromorphology (smell):
Treponema pedis  Treponema pedis  
After 11 days on FAA plates with 10% blood colonies are 0.5-2.0 mm in diameter, flat, hemolytic with a metallic sheen
Micromorphology: Thin, coiled (0.2-0.3 x 5-16 µm) and motile cells with 4-10 windings. Each cell has six periplasmic flagella where three of the originate from each end and they overlap in the middle of the cell. This used to be referred to as a 3:6:3 flagellation pattern.
Gram +/Gram -:G -
Metabolism: Anaerobic
Catalase/Oxidase:
Spec. Char.:
Disease:Digital dermatitis (cattle), ear necrosis and shoulder ulcer (pigs). The bacterium has also been isolated from the gingiva (gums) of pigs.
Hosts: Cattle, pigs, sheep
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)GenomeRef.
CP004120 T A4 2 889 325 1c + 0 Nr 120

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
EF061268  T3552BT 1 417 

Taxonomy/phylogeny:
Treponema pedis  
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. Some researchers think that e.g. T. pallidum subsp. pallidum and T. pallidum subsp. pertenue should be regarded as different species, although they are very closely related from a phylogenetic point of view. See the phylogenetic tree (Fig. 188:3).
Updated:2016-03-30

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