Chlamydiales

The bacterial order Chlamydiales includes only obligately intracellular bacteria that have a chlamydia-like developmental cycle of replication and at least 80% 16S rRNA or 23S rRNA gene sequence identity with other members of Chlamydiales. Chlamydiales live in animals, insects, and protozoa. The order Chlamydiales belongs to the class Chlamydiae, phylum Chlamydiae, domain Bacteria.

Chlamydiae
Scientific classification
Kingdom:
Bacteria
Phylum:
Chlamydiae
Class:
Chlamydiae
Order:
Chlamydiales
Families

Candidatus Piscichlamydia salmonis♠ Draghi et al. 2004
Candidatus Criblamydiaceae♠
Candidatus Rhabdochlamydiaceae♠
Chlamydiaceae
Parachlamydiaceae
Simkaniaceae
Waddliaceae

At present, Chlamydiae and Chlamydiales are essentially synonymous.

Currently, the order Chlamydiales includes the families Chlamydiaceae, Simkaniaceae, and Waddliaceae, which have Gram-negative extracellular infectious bodies (EBs), and Parachlamydiaceae, which has variable Gram staining of EBs. The family Rhabdochlamydiaceae has been proposed.

Notes

♠ Strain found at the National Center for Biotechnology Information (NCBI) but has no standing with the Bacteriological Code (1990 and subsequent Revision) as detailed by List of Prokaryotic names with Standing in Nomenclature (LPSN) as a result of the following reasons:
• No pure culture isolated or available for prokaryotes.
• Not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection.
• Not approved and published by the International Journal of Systematic Bacteriology or the International Journal of Systematic and Evolutionary Microbiology (IJSB/IJSEM).

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References
  • See the NCBI webpage on Chlamydiae Data extracted from the "NCBI Taxonomy Browser". National Center for Biotechnology Information. Retrieved 2011-06-05.
  • J.P. Euzéby. "Chlamydiales". List of Prokaryotic names with Standing in Nomenclature. Archived from the original on 2011-06-13. Retrieved 2011-06-11.


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