Species/Subspecies: | Rickettsia helvetica | ||||||||
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Category: | Primarily of interest in human medicin | ||||||||
Etymology: | Genus name: Named after Howard T. Ricketts, who showed which organism caused Rocky Mountain spotted fever, which resulted in his death Species epithet:from Switzerland. | ||||||||
Significance: | [Of minor importance] | ||||||||
Taxonomy: | Class Alphaproteobacteria Order Rickettsiales Family Rickettsiaceae Genus Rickettsia |
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Type Strain: | C3 = ATCC VR-1375 | ||||||||
Macromorphology (smell): | Cannot be cultivated on cell free substrates (for instance agar plates). | ||||||||
Micromorphology: | Pleomorphic rods (0.3-0.5 x 0.8-2.0 µm). | ||||||||
Gram +/Gram -: | |||||||||
Catalase/Oxidase: | |||||||||
Spec. Char.: | |||||||||
Vector: | Tick (Ixodes ricinus). | ||||||||
Disease: | Tick borne rickettsiosis |
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Hosts: | Humans | ||||||||
Clinical Picture: | |||||||||
Genome Sequence: |
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16S rRNA Seq.: |
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Taxonomy/phylogeny:
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About 30 species have been described within the genus Ricketsia. This genus is relatively closely related to other genera within the orderRickettsialas (Anaplasma, Ehrlichia and Neorickettsia). | ||||||||
Comment: | An evolutionary interesting bacterium, because its ancestors invaded cells and formed the mitochondria by endosymbiosis. | ||||||||
Updated: | 2023-03-22 |
News |
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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 VetBact Published 2023-03-15. Read more... |