Rhodospirillales

Purple sulfur bacteria
Scientific classification
Domain:	Bacteria
Phylum:	Pseudomonadota
Class:	Alphaproteobacteria
Order:	Rhodospirillales; Pfennig and Trüper 1971 (Approved Lists 1980)
Families
	Acetobacteraceae (ex Henrici 1939) Gillis and De Ley 1980; Azospirillaceae Hördt et al. 2020; Geminicoccaceae Proença et al. 2018; Kiloniellaceae Wiese et al. 2009; Reyranellaceae Hördt et al. 2020; Rhodospirillaceae Pfennig and Trüper 1971 (Approved Lists 1980); Rhodovibrionaceae Hördt et al. 2020; Stellaceae Hördt et al. 2020; Terasakiellaceae Hördt et al. 2020; Thalassobaculaceae Hördt et al. 2020; Thalassospiraceae Hördt et al. 2020; Zavarziniaceae Hördt et al. 2020;
Synonyms
	Kiloniellales Wiese et al. 2009;

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The Rhodospirillales are an order of Pseudomonadota.^[1]

Notable Families

The Acetobacteraceae comprise the acetic acid bacteria, which are heterotrophic and produce acetic acid during their respiration.^[2]

The Rhodospirillaceae include mainly purple nonsulfur bacteria, which produce energy through photosynthesis.^[2]

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN).^[1] The phylogeny is based on whole-genome analysis.^[3]^[a]

Rhodospirillaceae

Zavarziniaceae

Azospirillaceae

	Stellaceae

	Reyranellaceae

Acetobacteraceae

Rhodospirillaceae

	Thalassospiraceae

	Terasakiellaceae

Kiloniellaceae

	Rhodovibrionaceae

	Thalassobaculaceae

outgroup

Rhodothalassiales

Notes

^ The Geminicoccaceae are not included in this phylogenetic tree.

References

^ ^a ^b Euzéby JP, Parte AC. "Rhodospirillales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved May 24, 2021.
^ ^a ^b Garrity, George M.; Brenner, Don J.; Krieg, Noel R.; Staley, James T. (eds.) (2005). Bergey's Manual of Systematic Bacteriology, Volume Two: The Proteobacteria, Part C: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. New York, New York: Springer. ISBN 978-0-387-24145-6.
^ Hördt, Anton; López, Marina García; Meier-Kolthoff, Jan P.; Schleuning, Marcel; Weinhold, Lisa-Maria; Tindall, Brian J.; Gronow, Sabine; Kyrpides, Nikos C.; Woyke, Tanja; Göker, Markus (7 April 2020). "Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria". Frontiers in Microbiology. 11: 468. doi:10.3389/fmicb.2020.00468. PMC 7179689. PMID 32373076.

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[4] The Geminicoccaceae are not included in this phylogenetic tree.

[LPSN-1] Euzéby JP, Parte AC. "Rhodospirillales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved May 24, 2021.

[BergeyAlpha-2] Garrity, George M.; Brenner, Don J.; Krieg, Noel R.; Staley, James T. (eds.) (2005). Bergey's Manual of Systematic Bacteriology, Volume Two: The Proteobacteria, Part C: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. New York, New York: Springer. ISBN 978-0-387-24145-6.

[Hördt-3] Hördt, Anton; López, Marina García; Meier-Kolthoff, Jan P.; Schleuning, Marcel; Weinhold, Lisa-Maria; Tindall, Brian J.; Gronow, Sabine; Kyrpides, Nikos C.; Woyke, Tanja; Göker, Markus (7 April 2020). "Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria". Frontiers in Microbiology. 11: 468. doi:10.3389/fmicb.2020.00468. PMC 7179689. PMID 32373076.

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