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Phylogeny and Reclassification of Hemistasia phaeocysticola (Scherffel) Elbrächter & Schnepf, 1996
Author(s) -
Yabuki Akinori,
Tame Akihiro
Publication year - 2014
Publication title -
journal of eukaryotic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 1066-5234
DOI - 10.1111/jeu.12191
Subject(s) - flagellate , biology , phylogenetic tree , phylogenetics , clade , ultrastructure , 18s ribosomal rna , kinetoplast , evolutionary biology , zoology , sister group , protist , morphology (biology) , molecular phylogenetics , taxonomy (biology) , botany , gene , genetics , dna
Hemistasia phaeocysticola is a marine flagellate that preys on diatoms and dinoflagellates among others. Although its morphology and ultrastructure were previously observed and characterized, its phylogenetic position has not been analyzed using molecular sequence data. This flagellate was classified as a kinetoplastid on the basis of the presence of a kinetoplast in the mitochondrion. However, several morphological characteristics similar to those of diplonemids, a sister group of kinetoplastids, have also been noted. Herein, we report that H. phaeocysticola branches within the diplonemid clade in the phylogenetic tree reconstructed by analyzing 18S rRNA gene sequences. Its systematic placement based on this finding is also discussed.