| Species/Subspecies: | Treponema pedis | ||||||||||
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| Categories: | Causes hemolysis; motile | ||||||||||
| Etymology: | Genus name: a turning thread Species epithet: of the foot, referring to the source of isolation | ||||||||||
| Significance: | [Important] | ||||||||||
| Taxonomy: | Class Spirochaetia Order Spirochaetales Family Treponemataceae Genus Treponema |
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| 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.: | |||||||||||
| Special Media: | |||||||||||
| Disease: | Digital dermatitis (cattle), ear necrosis and shoulder ulcer (pigs). The bacterium has also been isolated from the gingiva (gums) of pigs. |
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| Hosts: | Cattle, pigs, sheep | ||||||||||
| Clinical Picture: | |||||||||||
| Genome Sequence: |
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| 16S rRNA Seq.: |
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| Taxonomy/phylogeny:
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About 30 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: | 2023-03-08 |