Cargando…

Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids

We report a novel nanoflagellate, Ophirina amphinema n. gen. n. sp., isolated from a lagoon of the Solomon Islands. The flagellate displays ‘typical excavate’ morphological characteristics, such as the presence of a ventral feeding groove with vanes on the posterior flagellum. The cell is ca. 4 µm i...

Descripción completa

Detalles Bibliográficos
Autores principales: Yabuki, Akinori, Gyaltshen, Yangtsho, Heiss, Aaron A., Fujikura, Katsunori, Kim, Eunsoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6212452/
https://www.ncbi.nlm.nih.gov/pubmed/30385814
http://dx.doi.org/10.1038/s41598-018-34504-6
_version_ 1783367539831603200
author Yabuki, Akinori
Gyaltshen, Yangtsho
Heiss, Aaron A.
Fujikura, Katsunori
Kim, Eunsoo
author_facet Yabuki, Akinori
Gyaltshen, Yangtsho
Heiss, Aaron A.
Fujikura, Katsunori
Kim, Eunsoo
author_sort Yabuki, Akinori
collection PubMed
description We report a novel nanoflagellate, Ophirina amphinema n. gen. n. sp., isolated from a lagoon of the Solomon Islands. The flagellate displays ‘typical excavate’ morphological characteristics, such as the presence of a ventral feeding groove with vanes on the posterior flagellum. The cell is ca. 4 µm in length, bears two flagella, and has a single mitochondrion with flat to discoid cristae. The flagellate exists in two morphotypes: a suspension-feeder, which bears flagella that are about the length of the cell, and a swimmer, which has longer flagella. In a tree based on the analysis of 156 proteins, Ophirina is sister to jakobids, with moderate bootstrap support. Ophirina has some ultrastructural (e.g. B-fibre associated with the posterior basal body) and mtDNA (e.g. rpoA–D) features in common with jakobids. Yet, other morphological features, including the crista morphology and presence of two flagellar vanes, rather connect Ophirina to non-jakobid or non-discobid excavates. Ophirina amphinema has some unique features, such as an unusual segmented core structure within the basal bodies and a rightward-oriented dorsal fan. Thus, Ophirina represents a new deeply-branching member of Discoba, and its mosaic morphological characteristics may illuminate aspects of the ancestral eukaryotic cellular body plan.
format Online
Article
Text
id pubmed-6212452
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-62124522018-11-06 Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids Yabuki, Akinori Gyaltshen, Yangtsho Heiss, Aaron A. Fujikura, Katsunori Kim, Eunsoo Sci Rep Article We report a novel nanoflagellate, Ophirina amphinema n. gen. n. sp., isolated from a lagoon of the Solomon Islands. The flagellate displays ‘typical excavate’ morphological characteristics, such as the presence of a ventral feeding groove with vanes on the posterior flagellum. The cell is ca. 4 µm in length, bears two flagella, and has a single mitochondrion with flat to discoid cristae. The flagellate exists in two morphotypes: a suspension-feeder, which bears flagella that are about the length of the cell, and a swimmer, which has longer flagella. In a tree based on the analysis of 156 proteins, Ophirina is sister to jakobids, with moderate bootstrap support. Ophirina has some ultrastructural (e.g. B-fibre associated with the posterior basal body) and mtDNA (e.g. rpoA–D) features in common with jakobids. Yet, other morphological features, including the crista morphology and presence of two flagellar vanes, rather connect Ophirina to non-jakobid or non-discobid excavates. Ophirina amphinema has some unique features, such as an unusual segmented core structure within the basal bodies and a rightward-oriented dorsal fan. Thus, Ophirina represents a new deeply-branching member of Discoba, and its mosaic morphological characteristics may illuminate aspects of the ancestral eukaryotic cellular body plan. Nature Publishing Group UK 2018-11-01 /pmc/articles/PMC6212452/ /pubmed/30385814 http://dx.doi.org/10.1038/s41598-018-34504-6 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Yabuki, Akinori
Gyaltshen, Yangtsho
Heiss, Aaron A.
Fujikura, Katsunori
Kim, Eunsoo
Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids
title Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids
title_full Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids
title_fullStr Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids
title_full_unstemmed Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids
title_short Ophirina amphinema n. gen., n. sp., a New Deeply Branching Discobid with Phylogenetic Affinity to Jakobids
title_sort ophirina amphinema n. gen., n. sp., a new deeply branching discobid with phylogenetic affinity to jakobids
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6212452/
https://www.ncbi.nlm.nih.gov/pubmed/30385814
http://dx.doi.org/10.1038/s41598-018-34504-6
work_keys_str_mv AT yabukiakinori ophirinaamphinemangennspanewdeeplybranchingdiscobidwithphylogeneticaffinitytojakobids
AT gyaltshenyangtsho ophirinaamphinemangennspanewdeeplybranchingdiscobidwithphylogeneticaffinitytojakobids
AT heissaarona ophirinaamphinemangennspanewdeeplybranchingdiscobidwithphylogeneticaffinitytojakobids
AT fujikurakatsunori ophirinaamphinemangennspanewdeeplybranchingdiscobidwithphylogeneticaffinitytojakobids
AT kimeunsoo ophirinaamphinemangennspanewdeeplybranchingdiscobidwithphylogeneticaffinitytojakobids