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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):
   
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:
 
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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