Ultrastructure and molecular phylogeny of Calkinsia aureus: cellular identity of a novel clade of deep-sea euglenozoans with epibiotic bacteria |
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| Authors: | Naoji Yubuki Virginia P Edgcomb Joan M Bernhard Brian S Leander |
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| Institution: | (1) Canadian Institute for Advanced Research, Program in Integrated Microbial Biodiversity, Departments of Botany and Zoology, University of British Columbia, 6270 University Boulevard, V6T 1Z4 Vancouver, BC, Canada;(2) Department of Geology and Geophysics, Woods Hole Oceanographic Institution, 02543 Woods Hole, MA, USA |
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| Abstract: | Background The Euglenozoa is a large group of eukaryotic flagellates with diverse modes of nutrition. The group consists of three main
subclades - euglenids, kinetoplastids and diplonemids - that have been confirmed with both molecular phylogenetic analyses
and a combination of shared ultrastructural characteristics. Several poorly understood lineages of putative euglenozoans live
in anoxic environments, such as Calkinsia aureus, and have yet to be characterized at the molecular and ultrastructural levels. Improved understanding of these lineages is
expected to shed considerable light onto the ultrastructure of prokaryote-eukaryote symbioses and the associated cellular
innovations found within the Euglenozoa and beyond. |
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