Rhodocyclaceae

Taxobox
color = lightgrey
name = Rhodocyclaceae
regnum = Bacteria
phylum = Proteobacteria
classis = Beta Proteobacteria
ordo = Rhodocyclales
familia = Rhodocyclaceae
subdivision_ranks = Genera and species
subdivision =
* "Azoarcus"
** "Azoarcus anaerobius"
** "Azoarcus buckelii"
** "Azoarcus communis"
** "Azoarcus evansii"
** "Azoarcus indigens"
** "Azoarcus toluclasticus"
** "Azoarcus tolulyticus"
** "Azoarcus toluvorans"
* "Azonexus"
** "Azonexus fungiphilus"
* "Azospira"
** "Azospira oryzae"
* "Azovibrio"
** "Azovibrio restrictus"
* "Dechloromonas"
** "Dechloromonas agitata"
** "Dechloromonas aromatica"
* "Ferribacterium"
** "Ferribacterium limneticum"
* "Petrobacter"
** "Petrobacter succinatimandens"
* "Propionivibrio"
** "Propionivibrio dicarboxylicus"
** "Propionivibrio limicola"
** "Propionivibrio pelophilus"
* "Quadricoccus"
** "Quadricoccus australiensis"
* "Rhodocyclus"
** "Rhodocyclus purpureus"
** "Rhodocyclus tenuis"
* "Sterolibacterium"
** "Sterolibacterium denitrificans"
* "Thauera"
* "Zoogloea"
** "Zoogloea ramigera"
** "Zoogloea resiniphila"The "Rhodocyclaceae" are a family of gram-negative bacteria. They are given their own order in the beta subgroup of Proteobacteria, and include many genera previously assigned to the family "Pseudomonadaceae". The family contains mainly aerobic or denitrifying rod-shaped bacteria, which exhibit very versatile metabolic capabilities. Most species live in aquatic habitats and prefer oligotrophic conditions. Many occur in waste water and play an important role in biological remediation in waste water treatment (e.g. "Zoogloea"). The name-giving genus "Rhodocyclus" is rather untypical for the group, being the only phototroph among them. "Rhodocyclus" sp. are performing anoxygenic photosynthesis under anoxic conditions in a similar way as other bacterial genera among the alpha-Proteobacteria. The species "Rhodocyclus purpureus" also deviates from the other known members of the family (including other "Rhodocyclus" species) in its ring-shaped cell form, which brings the two cell poles close to each other and has inspired the genus name.