Betaproteobacteria is a class of Proteobacteria.[1] Betaproteobacteria are, like all Proteobacteria, Gram-negative.

The Betaproteobacteria consist of several groups of facultative bacteria that are often highly versatile in their degradation capacities, but also contain chemolithotrophic genera (e.g., the ammonia-oxidising genus Nitrosomonas) and some phototrophs (members of the genera Rhodocyclus and Rubrivivax). Betaproteobacteria play a role in nitrogen fixation in various types of plants, oxidizing ammonium to produce nitrite – an important chemical for plant function. Many of them are found in environmental samples, such as waste water or soil.[2] Pathogenic species within this class are the Neisseriaceae (gonorrhea and meningitis) and species of the genus Burkholderia.


  • Phylogeny 1
  • See also 2
  • References 3
  • External links 4


The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [3] and National Center for Biotechnology Information (NCBI)[4] and the phylogeny is based on 16S rRNA-based LTP release 106 by 'The All-Species Living Tree' Project [5]

?Aquamonas fontanaYokota & Ding 2003

?'Candidatus Accumulibacter phosphatis' Hesselmann et al. 1999

?'Candidatus Nitrotoga arctica' Alawi et al. 2007

?'Candidatus Procabacter acanthamoebae' Horn et al. 2002

?'Candidatus Tremblaya' Thao et al. 2002

?Denitrobacter permanensFrette et al. 1997

?Ferritrophicum radicicolaWeiss et al. 2007

?Ferrovum myxofaciensJohnson & Hallberg 2006

?Gallionellaceae (Iron Bacteria)

?Imtechium assamiensisSaha & Chakrabarti 2004

?KinetoplastibacteriumDu et al. 1994

?Proteinimicrobium ihbticaKasana 2007

?Ultramicrobacter hongkongensisFang et al. 2006


Rhodocyclaceae 2

Rhodocyclaceae 1

Rhodocyclaceae 3


Sulfuricella denitrificans Kojima and Fukui 2010


Thiobacter subterraneus Hirayama et al. 2005

Neisseriaceae [incl. Chitinimonas]

Spirillum Ehrenberg 1832 emend. Podkopaeva et al. 2009

Thiobacillus Beijerinck 1904


♠ Strains found at the National Center for Biotechnology Information (NCBI) but not listed in the List of Prokaryotic names with Standing in Nomenclature (LSPN)

See also


  1. ^ "". Retrieved 2009-03-19. 
  2. ^ Holt, Jack R. and Carlos A. Iudica. "The Taxa of Life".  
  3. ^ J.P. Euzéby. "Betaproteobacteria".  
  4. ^ Sayers; et al. "Betaproteobacteria".  
  5. ^  

External links