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

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

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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)

	Thermotogae

	Fusobacteria

	Negativicutes

Endobacteria (=Firmicutes, Mollicutes)

Actinobacteria

Neomura

	Archaea

	Eukarya

References

^ ^a ^b 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.
^ ^a ^b Cavalier-Smith T (2006). "Rooting the tree of life by transition analyses". Biol. Direct. 1: 19. doi:10.1186/1745-6150-1-19. PMC 1586193. PMID 16834776.

Prokaryotes: Bacteria classification

(major groups

Terrabacteria
BV1, BV3, BV5

others	Actinomycetota Acidimicrobiia Actinomycetia "Aquicultoria" Coriobacteriia "Geothermincolia" "Humimicrobiia" Rubrobacteria Thermoleophilia "Bipolaricaulota" "Bipolaricaulia" Chloroflexota "Caldilineia" Chloroflexia Dehalococcoidia Ktedonobacteria "Limnocylindria" Deinococcota "Deinococcia" "Dormiibacterota" "Dormibacteria" Armatimonadota "Abditibacteriia" Armatimonadia Chthonomonadia Fimbriimonadia "Heboniibacteriia" "Zipacnadia" "Eremiobacterota" "Eudoremicrobiia" "Xenobiia" "Eremiobacteria"
Cyanoprokaryota	Cyanobacteriota Cyanobacteria "Sericytochromatia" "Vampirovibrionophyceae" "Margulisiibacteriota" "Marinamargulisbacteria" "Riflemargulisbacteria" "Saganbacteria" "Termititenacia"
Firmicutes BV3 Low GC	Bacillota "Bacillia" Bacillota A "Clostridiia" "Thermoanaerobacteria" "Thermosediminibacteria" Bacillota D "Dethiobacteria" "Natranaerobiia" "Proteinivoracia" Bacillota E "Sulfobacillia" "Symbiobacteriia" "Thermaerobacteria" Bacillota G "Hydrogenisporia" Limnochordia "Desulfotomaculota" "Carboxydocellia" "Carboxydothermia" "Dehalobacteriia" "Desulfitobacteriia" "Desulfotomaculia" "Moorellia" "Peptococcia" "Syntrophomonadia" "Thermincolia" "Halanaerobiaeota" "Halanaerobiia" "Selenobacteria" "Selenomonadia"

CPR group

"Elulota"
- "Elulimicrobia"
"Patescibacteria"
- ABY1
- "Absconditabacteria"
- "Andersenbacteria"
- "Berkelbacteria"
- "Dojkabacteria"
- "Doudnabacteria"
- "Gracilibacteria"
- "Howlettbacteria"
- "Katanobacteria"
- "Kazanbacteria"
- "Microgenomatia"
- "Paceibacteria"
- "Saccharimonadia"
- "Torokbacteria"
- "Wirthbacteria"

Thermotogida

Synergistetes	Atribacterota Atribacteria Synergistota Synergistia
Thermocalda	Caldisericota Caldisericia Coprothermobacterota Coprothermobacteria Dictyoglomerota Dictyoglomeria "Lithacetigenota" "Lithacetigenia" "Thermodesulfobiota" "Thermodesulfobiia" Thermotogota "Thermotogia"

Fusobacterida

Fusobacteriota
- Fusobacteriia
"Macinerneyibacteriota"
- "Macinerneyibacteriia"
"Muiribacteriota"
- "Muiribacteriia"
"Rifleibacteriota"
- "Ozemibacteria"
"Walliibacteriota"

Hydrobacteria
BV2, BV4

Clade 1

"Aerophobota"
- "Aerophobia"
"Auribacterota"
- "Ancaeobacteria"
- "Auribacteria"
- "Erginobacteria"
- "Tritonobacteria"
"Desantisiibacteriota"
Elusimicrobiota
- Elusimicrobiia
- Endomicrobiia
"Firestoneibacteriota"
"Goldiibacteriota"
"Omnitrophota"
- "Omnitrophia"
- "Velamenicoccia"
"Ratteibacteriota"

Clade 2

"Abyssubacteria"
"Hinthialibacterota"
- "Hinthialibacteria"
"Hydrogenedentota"
- "Hydrogenedentia"
"Poribacteriota"
"Saltatorellota"
- "Saltatorellae"
"Sumerlaeota"
- "Sumerlaeia"

Spirochaeto
bacteriobiontes

"Babelota"
- "Babeliae"
"Lindowiibacteriota"
Spirochaetota
- "Brevinematia"
- "Brachyspirae"
- "Exilispiria"
- "Leptospiria"
- "Spirochaetia"

PVC group
(Planctobacteria)

Chlamydiota
- Chlamydiia
Planctomycetota
- "Brocadiia"
- Phycisphaeria
- Planctomycetia
- "Uabimicrobiia"
Verrucomicrobiota
- Kiritimatiellia
- Lentisphaeria
- Verrucomicrobiia

FCB group
(Sphingobacteria)

Bacteroidota
- Bacteroidia
- Chlorobiia
- "Ignavibacteriia"
- "Kapabacteria"
- "Kryptoniia"
- Rhodothermia
Calditrichota
- Calditrichia
"Cloacimonadota"
- "Cloacimonadia"
"Coatesiibacteriota"
"Cosmopoliota"
- "Cosmopolitia"
"Delongiibacteriota"
"Edwardsiibacteriota"
"Eiseniibacteriota"
"Electryoneota"
- "Electryoneia"
- "Tariuqbacteria"
"Fermentibacterota"
- "Fermentibacteria"
Fibrobacterota
- Chitinivibrionia
- Fibrobacteria
- "Raymondbacteriia"
Gemmatimonadota
- Gemmatimonadia
- "Glassbacteria"
"Heilongiota"
- "Heilongiia"
"Hydrothermota"
- "Hydrothermia"
- "Stahlbacteria"
"Krumholzibacteriota"
- "Krumholzibacteriia"
"Latescibacterota"
- "Handelsmanbacteria"
- "Latescibacteria"
"Neomarinimicrobiota"
"Marinisomatota"
- "Marinisomatia"
"Tianyaibacteriota"
"Zixiibacteriota"

Proteobacteria
BV2

Aquificida	"Acidulodesulfobacteriota" "Acidulodesulfobacteriia" Aquificota Aquificia "Desulfurobacteriia" Campylobacterota "Campylobacteria" Desulfurellia "Calescibacteriota" "Calescibacteriia" Chrysiogenota Chrysiogenia "Dadaibacteriota" "Dadabacteria" Deferribacterota "Deferribacteria" Desulfobacterota G Syntrophorhabdia "Thermosulfidibacterota" "Thermosulfidibacteria"
Deltaproteobacteria	Bdellovibrionota Bacteriovoracia Bdellovibrionia Oligoflexia "Binatota" "Binatia" "Deferrimicrobiota" "Anaeroferrophilia" "Deferrimicrobiia" "Deferrisomatota" Deferrisomatia "Desulfuromonadota" Desulfuromonadia "Lernaellota" "Lernaellia" "Methylomirabilota" "Methylomirabilia" "Moduliflexota" "Moduliflexia" Myxococcota Myxococcia "Bradymonadia" Polyangiia Nitrospinota Nitrospinia Nitrospirota Nitrospiria "Thermodesulfovibrionia" SAR324 "Lambdaproteobacteria" "Schekmaniibacteriota" "Tectimicrobiota" "Entotheonellia" "Thermodesulfobacteriota"
others	Acidobacteriota "Acidobacteriia" "Aminicenantia" Blastocatellia "Fischerbacteria" "Guanabaribacteriia" "Holophagia" "Polarisedimenticolia" Thermoanaerobaculia Vicinamibacteria "Canglongiota" "Canglongiia" "Leptospirillaeota" "Leptospirillia" Pseudomonadota "Caulobacteria" "Mariprofundia" "Magnetococcia" "Pseudomonadia"

others

Source: Bergey's Manual (2001–2012)
Alternative views: Wikispecies

Microbiology: Bacteria

Medical
microbiology

Biochemistry
and ecology

Oxygen preference	Aerobic Obligate Facultative Anaerobic Facultative Obligate Microaerophile Nanaerobe Aerotolerant
Other	Extremophile Human microbiome Gut Lung Mouth Skin Vaginal (in pregnancy) Placental Uterine Salivary Microbial metabolism Nitrogen fixation Microbial ecology Primary nutritional groups Substrate preference Lipophilic Saccharophilic

Shape

Structure

Cell envelope	Cell membrane Cell wall: Peptidoglycan NAM NAG DAP Gram-positive bacteria only: Teichoic acid Lipoteichoic acid Endospore Gram-negative bacteria only: Bacterial outer membrane Porin Lipopolysaccharide Periplasmic space Mycobacteria only: Arabinogalactan Mycolic acid
Outside envelope	Bacterial capsule Slime layer S-layer Glycocalyx Pilus Fimbria Non-motile bacteria
Composite	Biofilm

Taxonomy
and evolution

Categories:

Hidden category:

Use dmy dates from March 2021

See also

References