Eurybacteria
| Eurybacteria | |
|---|---|
| Scientific classification | |
| Domain: | |
| Superphylum: | Eurybacteria
|
| Groups | |
Eurybacteria is a taxon created by Cavalier-Smith,[1] which includes several groups of Gram-negative bacteria. In this model, it is the ancestor of gram positive bacteria.[2] Their endospores are characterized by producing and presenting external flagella or mobility by bacterial displacement.
Members
[edit]Specifically, it includes:
- Fusobacteria. For example, Leptotrichia and Fusobacterium
- Togobacteria. For example, Thermotoga.
In the standard classification, Selenobacteria are usually included in the phylum Bacillota, whereas fusobacteria and togobacteria are classified as their own groups.
Relationships
[edit]The following graph shows Cavalier-Smith's version of the tree of life, indicating the status of eurybacteria. Cavalier-Smith's Tree of Life, 2006[cstol 1]
[A]
|
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Legend:
[A] Gram-negative with a peptidoglycan cell wall like Chlorosome.
[B] Oxygenic Photosynthesis, Omp85 and four new catalases.
[C] Glycobacterial revolution: outer membrane with insertion of lipopolysaccharides, hopanoids, diaminopimelic acid, ToIC and TonB.
[D] Phycobilin chromophores.
[E] Flagella.
[F] Four sections: an amino acid in HSP60 and FtsZ and a domain in RNA polymerases β and σ.
[G] Endospores.
[H] Gram-positive Bacteria: hypertrophy of the wall peptidoglycan, sortase enzyme and a loss of the outer membrane.
[I] Glycerol 1-P dehydrogenase.
[J] Proteasome and phosphatidylinositol.
[K] Neomura revolution: Replacement of peptidoglycan by glycoproteins and lipoproteins.
[L] Reverse DNA gyrase and ether lipid isoprenoids.
[M] Phagocytosis.
- ^ Cavalier-Smith T (2006). "Cell evolution and Earth history: stasis and revolution". Philos Trans R Soc Lond B Biol Sci. 361 (1470): 969–1006. doi:10.1098/rstb.2006.1842. PMC 1578732. PMID 16754610.
References
[edit]- ^ Cavalier-Smith T (2006). "Rooting the tree of life by transition analyses". Biol. Direct. 1 (1): 19. doi:10.1186/1745-6150-1-19. PMC 1586193. PMID 16834776.
- ^ Cavalier-Smith T (January 2010). "Deep phylogeny, ancestral groups and the four ages of life". Philos. Trans. R. Soc. Lond. B Biol. Sci. 365 (1537): 111–32. doi:10.1098/rstb.2009.0161. PMC 2842702. PMID 20008390.