Biology:Branching order of bacterial phyla (Cavalier-Smith, 2002)

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Main page: Biology:Bacterial phyla

There are several models of the Branching order of bacterial phyla, one of these was proposed in 2002 and 2004 by Thomas Cavalier-Smith.[1][2] In this frame of work, the branching order of the major lineage of bacteria are determined based on some morphological characters, such as cell wall structure, and not based on the molecular evidence (molecular phylogeny).

Whereas modern molecular studies point towards the root of the tree of life being between a monophyletic Bacteria and Archaea+Eukarya (Neomura), in the Cavalier-Smith theory, the last common ancestor (cenancestor) was a Gram-negative diderm bacterium with peptidoglycan, while Archaea and Eukaryotes stem from Actinobacteria.[1][2]

LUA

Chlorobacteria (accepted name = Chloroflexi)

Hadobacteria (= Deinococcus-Thermus group)

Glycobacteria

Cyanobacteria

Gracilicutes

Spirochaetae

Sphingobacteria

Fibrobacteres

Chlorobi

Bacteroidetes

Planctobacteria

Planctomycetes

Chlamydiae

Lentisphaerae

Verrucomicrobia

Proteobacteria
Geobacteria

Deferribacteres

Acidobacteria

Thiobacteria

Deltaproteobacteria

Epsilonproteobacteria

Rhodobacteria

Alphaproteobacteria

Chromatibacteria

Betaproteobacteria

Gammaproteobacteria

Unibacteria
Eurybacteria

Thermotogae

Fusobacteria

Negativicutes

Endobacteria (=Firmicutes, Mollicutes)

Actinobacteria

Neomura

Archaea

Eukarya

See also

References

  1. 1.0 1.1 Cavalier-Smith, T (2002). "The neomuran origin of archaebacteria, the negibacterial root of the universal tree and bacterial megaclassification". International Journal of Systematic and Evolutionary Microbiology 52 (Pt 1): 7–76. doi:10.1099/00207713-52-1-7. PMID 11837318. 
  2. 2.0 2.1 Cavalier-Smith T (2006). "Rooting the tree of life by transition analyses". Biol. Direct 1: 19. doi:10.1186/1745-6150-1-19. PMID 16834776.