ⓘ Rhodocyclales. The Rhodocyclales are an order of the class Betaproteobacteria in the phylum Proteobacteria . Following a major reclassification of the class in ..

                                     

ⓘ Rhodocyclales

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

  • Azonexaceae contains the genera Azonexus type genus, Dechloromonas, Ferribacterium and Quatrionicoccus. Cells are curved rods or cocci. Dominant respiratory quinone is ubiquinone-8. G+C fractions are 63.5 - 67.0 mol%.
  • Zoogloeaceae contains the genera Zoogloea type genus, Thauera, Uliginosibacterium and Azoarcus. Cells are rod shaped. Dominant respiratory quinones are ubiquinone-8 and rhodoquinone-8. G+C fractions are 59.3 - 69.0 mol%.
  • Rhodocyclaceae type family contains the genera Rhodocyclus type genus, Azospira and Propionivibrio. Cells are curved rods, rings or spirillae. Dominant respiratory quinones are menaquinone-8, ubiquinone-8 and rhodoquinone-8. G+C fractions are 61.6 - 65.3 mol%.

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

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