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Two strains of "Zoogloea." Wild type is on the left. The right is a strain unable to form floc.
Two strains of Zoogloea resiniphila. Wild type is on the left. The right is a strain unable to form floc.
Scientific classification e
Domain: Bacteria
Phylum: Proteobacteria
Class: Betaproteobacteria
Order: Rhodocyclales
Boden et al. 2017 (Garrity, et al 2006)

The Rhodocyclales [1] are an order of the class Betaproteobacteria in the phylum "Proteobacteria".[2] Following a major reclassification of the class in 2017, the previously monofamilial order was split into three families:

The genus Azovibrio also falls within the order but is incertae sedis, falling between the Zoogloeaeceae and the Azonexaceae.


  1. ^ a b c d e f g Boden, R; Hutt, LP, Rae AW (2017). "Reclassification of Thiobacillus aquaesulis (Wood & Kelly, 1995) as Annwoodia aquaesulis gen. nov., comb. nov., transfer of Thiobacillus (Beijerinck, 1904) from the Hydrogenophilales to the Nitrosomonadales, proposal of Hydrogenophilalia class. nov. within the 'Proteobacteria', and four new families within the orders Nitrosomonadales and Rhodocyclales". International Journal of Systematic and Evolutionary Microbiology. 67 (5): 1191–1205. doi:10.1099/ijsem.0.001927. PMID 28581923.CS1 maint: uses authors parameter (link)
  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.