AUTHOR=Kim Jong Im , Linton Eric W., Shin Woongghi 

TITLE=Taxon-rich multigene phylogeny of the photosynthetic euglenoids (Euglenophyceae)

JOURNAL=Frontiers in Ecology and Evolution

VOLUME=3

YEAR=2015

URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2015.00098

DOI=10.3389/fevo.2015.00098

ISSN=2296-701X

ABSTRACT=<p>To establish taxonomy and understand phylogenetic relationships among strains and species of the photosynthetic euglenoids, we performed phylogenetic analyses based on a four gene sequence dataset (nr SSU and LSU rDNA, and pt SSU and LSU rDNA) from 343 taxa (including three outgroup). The phylogenetic tree based on the combined dataset was split into two major clades: Euglenaceae and Phacaceae. The family Euglenaceae was a well-supported monophyletic group containing eight genera (<italic>Colacium, Cryptoglena, Euglena, Euglenaformis, Euglenaria, Monomorphina, Strombomonas</italic>, and <italic>Trachelomonas</italic>), each representing a monophyletic lineage, except for the genus <italic>Euglena</italic>. The genus <italic>Euglena</italic> was divided into three subclades (A1, A2, and A3) and was paraphyletic due to <italic>Euglena archeoplastidiata</italic> being grouped with the genus <italic>Euglenaria</italic> and <italic>E</italic>. cf. <italic>velata</italic> with the genus <italic>Colacium</italic>. The family Phacaceae was supported as a monophyletic group and contained three genera (<italic>Discoplastis, Lepocinclis</italic>, and <italic>Phacus</italic>). The genus <italic>Phacus</italic> contained traditionally defined members as well as the non-traditional <italic>P. warszewiczii</italic> and <italic>P. limnophila</italic>, which support the generic concept of Linton et al. (<xref ref-type="bibr" rid="B33">2010</xref>).</p>