Phylogeny and Reclassification of Hemistasia phaeocysticola (Scherffel) Elbrächter & Schnepf, 1996.
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.
Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka, Kanagawa, 237-0061, Japan.
Akinori
A
Yabuki
Akihiro
A
Tame
D059001:Aquatic Organisms / Q000145:classification / Q000235:genetics; D016000:Cluster Analysis; D016054:DNA, Protozoan / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D016830:Kinetoplastida / Q000145:classification* / Q000235:genetics*; D008969:Molecular Sequence Data; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D017422:Sequence Analysis, DNA
D016054:DNA, Protozoan; D004275:DNA, Ribosomal; D012337:RNA, Ribosomal, 18S
Diplonemid; Euglenozoa; kinetoplastid; phylogenetic analysis; taxonomy