Obazoa is a proposed sister clade of Amoebozoa (which together form Amorphea). The term Obazoa is based on the OBA acronym for Opisthokonta, Breviatea, and Apusomonadida, the group's three constituent clades.[1]
Determining the placement of Breviatea and Apusomonadida and their properties is of interest for the development of the opisthokonts in which the main lineages of animals and fungi emerged.[1] The relationships among opisthokonts, breviates and apusomonads are not conclusively resolved (as of 2018), though Breviatea is usually inferred to be the most basal of the three lineages.[2][3][4][5][6]
The phylogeny of the Obazoa is shown in the cladogram.[6][7][8][9]
Eukaryotes
Diphoda
Diaphoretickes (inc. plants)
Discoba
Bikonts
Ancyromonadida
Malawimonada
CRuMs
Amorphea
Amoebozoa
Obazoa
Breviatea
Apusomonadida
Opisthokonta
Holomycota (inc. fungi)
Holozoa (inc. animals)
1300 mya
1500 mya
2200 mya
^ abBrown, M.W.; Sharpe, S.C.; Silberman, J.D.; Heiss, A.A.; Lang, B.F.; Simpson, A.G.B.; Roger, A.J. (2013). "Phylogenomics demonstrates that breviate flagellates are related to opisthokonts and apusomonads". Proceedings of the Royal Society B: Biological Sciences. 280 (1769): 20131755. doi:10.1098/rspb.2013.1755. JSTOR 43601549. OCLC 8093015610. PMC 3768317. PMID 23986111. S2CID 19627175.
^Eme, Laura; Sharpe, Susan C.; Brown, Matthew W.; Roger, Andrew J. (2014). "On the Age of Eukaryotes: Evaluating Evidence from Fossils and Molecular Clocks". Cold Spring Harbor Perspectives in Biology. 6 (8): a016139. doi:10.1101/cshperspect.a016139. ISSN 1943-0264. PMC 4107988. PMID 25085908.
^Ruggiero, Michael A.; Gordon, Dennis P.; Orrell, Thomas M.; Bailly, Nicolas; Bourgoin, Thierry; Brusca, Richard C.; Cavalier-Smith, Thomas; Guiry, Michael D.; Kirk, Paul M. (2015-06-11). "Correction: A Higher Level Classification of All Living Organisms". PLOS ONE. 10 (6): e0130114. Bibcode:2015PLoSO..1030114R. doi:10.1371/journal.pone.0130114. ISSN 1932-6203. PMC 5159126. PMID 26068874.
^Cavalier-Smith, Thomas; Fiore-Donno, Anna Maria; Chao, Ema; Kudryavtsev, Alexander; Berney, Cédric; Snell, Elizabeth A.; Lewis, Rhodri (2015-02-01). "Multigene phylogeny resolves deep branching of Amoebozoa". Molecular Phylogenetics and Evolution. 83: 293–304. doi:10.1016/j.ympev.2014.08.011. PMID 25150787.
^Cavalier-Smith T (2009). "Megaphylogeny, cell body plans, adaptive zones: causes and timing of eukaryote basal radiations". J. Eukaryot. Microbiol. 56 (1): 26–33. doi:10.1111/j.1550-7408.2008.00373.x. PMID 19340985.
^Schön ME, Zlatogursky VV, Singh RP, et al. (2021). "Picozoa are archaeplastids without plastid". Nature Communications. 12 (1): 6651. bioRxiv 10.1101/2021.04.14.439778. doi:10.1038/s41467-021-26918-0. PMC 8599508. PMID 34789758. S2CID 233328713.
^Tikhonenkov DV, Mikhailov KV, Gawryluk RM, et al. (December 2022). "Microbial predators form a new supergroup of eukaryotes". Nature. 612 (7941): 714–719. Bibcode:2022Natur.612..714T. doi:10.1038/s41586-022-05511-5. PMID 36477531. S2CID 254436650.
^Burki, Fabien; Roger, Andrew J.; Brown, Matthew W.; Simpson, Alastair G.B. (2020). "The New Tree of Eukaryotes". Trends in Ecology & Evolution. 35 (1). Elsevier: 43–55. doi:10.1016/j.tree.2019.08.008. ISSN 0169-5347. PMID 31606140. S2CID 204545629.
Obazoa is a proposed sister clade of Amoebozoa (which together form Amorphea). The term Obazoa is based on the OBA acronym for Opisthokonta, Breviatea...
Opisthokonts together with Apusomonadida and Breviata comprise the larger clade Obazoa. A common characteristic of opisthokonts is that flagellate cells, such...
Amorphea is a taxonomic supergroup that includes the basal Amoebozoa and Obazoa. That latter contains the Opisthokonta, which includes the Fungi, Animals...
includes both animals and fungi. Together with the Breviatea, these form the Obazoa clade. Apusomonads are small gliding heterotrophic biflagellates (i.e. with...
anaerobic (oxygen-free) environments. They are currently placed in the Obazoa clade. They likely do not possess vinculin proteins. Their metabolism relies...
such as Archaeplastida (photoautotrophs that includes land plants), SAR, Obazoa (which includes fungi and animals), Amoebozoa and Excavata. Protists represent...
fungi, according to the most recent phylogenetic analyses. Incertae sedis Obazoa: Apusomonadida Karpov & Mylnikov 1989 [Apusomonadidae Karpov & Mylnikov...
Opisthokonta supergroup. Together, these three clades are part of the larger clade Obazoa, which in turn is the sister group to the Amoebozoa supergroup. Cavalier-Smith...
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