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Purple sulfur bacteria
Scientific classification
Kingdom: Bacteria
Phylum: Proteobacteria
Class: Alphaproteobacteria
Order: Rhodospirillales


The Rhodospirillales are an order of Proteobacteria, with two families: the Acetobacteraceae and the Rhodospirillaceae.[1]

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]


  1. ^ LPSN
  2. ^ 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.