Breviata

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Breviata
Scientific classification
Domain: Eukaryota
(unranked): Obazoa
Class: Breviatea
Order: Breviatida
Genus: Breviata
Walker, Dacks & Embley 2006
Species
  • B. anathema (Klebs 1892) Walker, Dacks & Embley 2006
Synonyms

Mastigamoeba invertens Klebs 1892

Breviata anathema is a single-celled flagellate amoeboid protist, previously studied under the name Mastigamoeba invertens.[1] The cell lacks mitochondria.,[2] but has remnant mitochondrial genes, and possesses an organelle believed to be a modified anaerobic mitrochondrion, similar to the mitosomes and hydrogenosomes found in other eukaryotes that live in low-oxygen environments.[3]

Early molecular data placed Breviata in the Amoebozoa, but without obvious affinity to known amoebozoan groups.[3][4] More recently, Phylogenomic analysis has shown that the class Breviatea is a sister group to the Opisthokonta and Apusomonadida. Together, these three groups form the clade Obazoa (the term Obazoa is based on an acronym of Opisthokonta, Breviatea, and Apusomonadida, plus ‘zóa’ (pertaining to ‘life’ in Greek)).[5]

Relationship[edit]

See also[edit]

References[edit]

  1. ^ Walker, Giselle; Dacks, Joel B.; Martin Embley, T. (2006-03-01). "Ultrastructural Description of Breviata anathema, N. Gen., N. Sp., the Organism Previously Studied as "Mastigamoeba invertens"". Journal of Eukaryotic Microbiology 53 (2): 65–78. doi:10.1111/j.1550-7408.2005.00087.x. ISSN 1550-7408. 
  2. ^ Edgcomb, Vp; Simpson, Ag; Zettler, La; Nerad, Ta; Patterson, Dj; Holder, Me; Sogin, Ml (Jun 2002), "Pelobionts are degenerate protists: insights from molecules and morphology" (Free full text), Molecular Biology and Evolution 19 (6): 978–82, doi:10.1093/oxfordjournals.molbev.a004157, ISSN 0737-4038, PMID 12032256 
  3. ^ a b A Minge, M; Silberman, Jd; Orr, Rj; Cavalier-Smith, T; Shalchian-Tabrizi, K; Burki, F; Skjæveland, A; Jakobsen, Ks (Nov 2008), "Evolutionary position of breviate amoebae and the primary eukaryote divergence", Proceedings. Biological sciences / the Royal Society 276 (1657): 597–604, doi:10.1098/rspb.2008.1358, PMC 2660946, PMID 19004754 
  4. ^ Roger, Aj; Simpson, Ag (Feb 2009), "Evolution: revisiting the root of the eukaryote tree", Current Biology 19 (4): R165–7, doi:10.1016/j.cub.2008.12.032, PMID 19243692 
  5. ^ Brown, Matthew W.; Sharpe, Susan C.; Silberman, Jeffrey D.; Heiss, Aaron A.; Lang, B. Franz; Simpson, Alastair G. B.; Roger, Andrew J. (2013-10-22). "Phylogenomics demonstrates that breviate flagellates are related to opisthokonts and apusomonads". Proceedings. Biological Sciences / The Royal Society 280 (1769): 20131755. doi:10.1098/rspb.2013.1755. ISSN 1471-2954. PMC 3768317. PMID 23986111. 
  6. ^ CAVALIER-SMITH, Thomas (2013). "Early evolution of eukaryote feeding modes, cell structural diversity, and classification of the protozoan phyla Loukozoa, Sulcozoa, and Choanozoa". European Journal of Protistology [online] 49 (2): 115–178. doi:10.1016/j.ejop.2012.06.001. ISSN 0932-4739.