Coxiellaceae

Coxiellaceae
	Coxiella burnetii, the causative agent of Q fever
Scientific classification
Domain:	Bacteria
Kingdom:	Pseudomonadati
Phylum:	Pseudomonadota
Class:	Gammaproteobacteria
Order:	Legionellales
Family:	Coxiellaceae
Genera
	Aquicella; Coxiella; Diplorickettsia; Rickettsiella; "Ca. Berkiella"

The Coxiellaceae are a family in the order Legionellales.^[2]^[3]

Coxiella burnetii is the best-described species in this group.

The bacterium Rickettsiella melolonthae was initially assigned to the Coxiellaceae^[3], but is considered part of the Diplorickettsiaceae (a closely related lineage of Gammaproteobacteria) based on recent phylogenomic reconstructions^[4]^[5].

Various other Coxiellaceae lineages have so-far evaded cultivation efforts but have been characterized through culture-independent genomics and are present in both freshwater and diverse marine environments, likely with a host-associated lifestyle similar to that of Coxiella burnetti^[6].

References

^ "List of genera included in families - Coxiellaceae". List of Prokaryotic Names with Standing in Nomenclature. Retrieved 25 June 2016.
^ Coxiellaceae at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
^ ^a ^b Leclerque A, Kleespies RG (April 2008). "16S rRNA-, GroEL- and MucZ-based assessment of the taxonomic position of 'Rickettsiella melolonthae' and its implications for the organization of the genus Rickettsiella". Int. J. Syst. Evol. Microbiol. 58 (Pt 4): 749–55. doi:10.1099/ijs.0.65359-0. PMID 18398164.
^ "GTDB - Search". gtdb.ecogenomic.org. Retrieved 2025-04-20.
^ Needham, David M.; Poirier, Camille; Bachy, Charles; George, Emma E.; Wilken, Susanne; Yung, Charmaine C. M.; Limardo, Alexander J.; Morando, Michael; Sudek, Lisa; Malmstrom, Rex R.; Keeling, Patrick J.; Santoro, Alyson E.; Worden, Alexandra Z. (September 2022). "The microbiome of a bacterivorous marine choanoflagellate contains a resource-demanding obligate bacterial associate". Nature Microbiology. 7 (9): 1466–1479. doi:10.1038/s41564-022-01174-0. ISSN 2058-5276.
^ Wittmers, Fabian; Poirier, Camille; Bachy, Charles; Eckmann, Charlotte; Matantseva, Olga; Carlson, Craig A.; Giovannoni, Stephen J.; Goodenough, Ursula; Worden, Alexandra Z. (2025-02-12). "Symbionts of predatory protists are widespread in the oceans and related to animal pathogens". Cell Host & Microbe. 33 (2): 182–199.e7. doi:10.1016/j.chom.2025.01.009. ISSN 1931-3128. PMID 39947132.

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[1] "List of genera included in families - Coxiellaceae". List of Prokaryotic Names with Standing in Nomenclature. Retrieved 25 June 2016.

[2] Coxiellaceae at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

[pmid18398164-3] Leclerque A, Kleespies RG (April 2008). "16S rRNA-, GroEL- and MucZ-based assessment of the taxonomic position of 'Rickettsiella melolonthae' and its implications for the organization of the genus Rickettsiella". Int. J. Syst. Evol. Microbiol. 58 (Pt 4): 749–55. doi:10.1099/ijs.0.65359-0. PMID 18398164.

[4] "GTDB - Search". gtdb.ecogenomic.org. Retrieved 2025-04-20.

[5] Needham, David M.; Poirier, Camille; Bachy, Charles; George, Emma E.; Wilken, Susanne; Yung, Charmaine C. M.; Limardo, Alexander J.; Morando, Michael; Sudek, Lisa; Malmstrom, Rex R.; Keeling, Patrick J.; Santoro, Alyson E.; Worden, Alexandra Z. (September 2022). "The microbiome of a bacterivorous marine choanoflagellate contains a resource-demanding obligate bacterial associate". Nature Microbiology. 7 (9): 1466–1479. doi:10.1038/s41564-022-01174-0. ISSN 2058-5276.

[6] Wittmers, Fabian; Poirier, Camille; Bachy, Charles; Eckmann, Charlotte; Matantseva, Olga; Carlson, Craig A.; Giovannoni, Stephen J.; Goodenough, Ursula; Worden, Alexandra Z. (2025-02-12). "Symbionts of predatory protists are widespread in the oceans and related to animal pathogens". Cell Host & Microbe. 33 (2): 182–199.e7. doi:10.1016/j.chom.2025.01.009. ISSN 1931-3128. PMID 39947132.

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