HIERARCHICAL CLASSIFICATION OF THE PHYLUM EPSILONPROTEOBACTERIA

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PHYLUM EPSILONPROTEOBACTERIA LINKS

The Epsilonnproteobacteria s the least known group within this kingdom. We suggest that the following should be a provisional classification only. The 2 orders correspond to the named taxa of Campbell et al. (2006).

CLASS CAMPYLOBACTERIAE
- Curved or spiral rods. They do not form spores. They swim in a corkscrew motion with single polar flagella (unsheathed). They are microaerophilic or anaerobic chemoorganotrophs in which only amino acids or TCA (Kreb’s Cycle) intermediates are oxidized.
- ORDER NAUTILIALES
  - Taxa mainly of hydrothermal vents
  - Nautilia, Caminibacter, Lebetimonas
  - Incertae Sedis: Hydrogenimonas, Nitratiruptor, Thioreductor
- ORDER CAMPYLOBACTERALES
  - Contains taxa of hydrothermal vents and opportunistic pathogens.
  - Campylobacter, Arcobacter, Nitratifractor, Sulfurospirillum, Sulfurimonas, Sulfurovum, Sulfiricurvum, Thiomicrospira
  - Helicobacter, Thiovulum, Wolinella

LITERATURE CITED

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Brock, T. D., M.T. Madigan, J.M. Martinko, and J. Parker. 1994. Biology of Microorganisms. 7th ed. Prentice Hall. Englewood Cliffs, NJ.

Campbell, B. J., A. S. Engel, M. L. Porter, and K. Takai. 2006. The versatile ε-proteobacteria: key players in sulphidic habitats. Nature Reviews – Microbiology. 4: 458-468. plus supplementary material.

Emerson, D., J. A. Rentz, T. G. Lilburn, R. E. Davis, H. Aldrich, C. Chan, and C. L. Moyer. 2007. A novel lineage of Proteobacteria involved in formation of marine Fe-oxidizing microbial mat communities. PLoS ONE. 2007 (8): e667. http://www.plosone.org

Gao, B. and R. S. Gupta. 2007. Phylogenetic analysis of proteins that are distinctive of Archaea and its main subgroups and the origin of methanogenesis. BMC Genomics. 8:86. http://www.biomedcentral.com/1471-2164/8/86.

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Margulis, L. and K. Schwartz. 1988. Five kingdoms, an illustrated guide to the phyla of life on earth. 2nd Edition. W. H. Freeman and Co. New York.

Margulis, L. and K. Schwartz. 1998. Five kingdoms, an illustrated guide to the phyla of life on earth. 3rd Edition. W. H. Freeman and Co. New York.

Stackebrandt, E., R. G. E. Murray, and H. G. Trüper. 1988. Proteobacteria classis nov., a name for the phylogenetic taxon that includes the “Purple Bacteria and Their Relatives”. International Journal of Systematic Bacteriology. 38(3): 321-325.

Tudge, C. 2000. The Variety of Life, A Survey and a Celebration of all the Creatures That Have Ever Lived. Oxford University Press. New York.

Williams, K. P., B. W. Sobral, and A. W. Dickerman. 2007. A robust species tree for the Alphaproteobacteria. Journal of Bacteriology. 189(13): 4578-4586.

Woese, C. R. and G. E. Fox. 1977. Phylogenetic structure of the prokaryotic domain: the primary kingdoms. Proceedings of the National Academy of Sciences USA. 74:5088-5090.

Woese, C. R., O. Kandler, and M. L. Wheelis. 1990. Towards a natural system of organisms: Proposal for the domains Archaea, Bacteria, and Eucarya. Proc. Natl. Acad. Sci. USA. 87: 4576-4579.

By Jack R. Holt. Last revised: 02/07/2012

HIERARCHICAL CLASSIFICATION OF THE PHYLUM EPSILONPROTEOBACTERIA

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