Breviata

Breviata
B. anathema
Scientific classification Edit this classification
Domain: Eukaryota
Class: Breviatea
Order: Breviatida
Family: Breviatidae
Genus: Breviata
Walker, Dacks & Embley 2006
Type species
Breviata anathema
Walker, Dacks & Embley 2006
Species
  • B. anathema

Breviata anathema is a single-celled flagellate amoeboid eukaryote, previously studied under the name Mastigamoeba invertens.[1] The cell lacks mitochondria, much like the pelobionts[2] to which the species was previously assigned,[1] but has remnant mitochondrial genes, and possesses an organelle believed to be a modified anaerobic mitochondrion, 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]

  1. ^ a b Cite error: The named reference Walker 2006 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Edgcomb 2002 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Minge 2008 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Roger 2009 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Brown 2013 was invoked but never defined (see the help page).