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Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.

The green plants (Viridiplantae) are an ancient group of eukaryotes comprising two main clades: the Chlorophyta, which includes a wide diversity of green algae, and the Streptophyta, which consists of freshwater green algae and the land plants. The early-diverging lineages of the Viridiplantae compr...

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Autores principales: Leliaert, Frederik, Tronholm, Ana, Lemieux, Claude, Turmel, Monique, DePriest, Michael S., Bhattacharya, Debashish, Karol, Kenneth G., Fredericq, Suzanne, Zechman, Frederick W., Lopez-Bautista, Juan M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4860620/
https://www.ncbi.nlm.nih.gov/pubmed/27157793
http://dx.doi.org/10.1038/srep25367
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author Leliaert, Frederik
Tronholm, Ana
Lemieux, Claude
Turmel, Monique
DePriest, Michael S.
Bhattacharya, Debashish
Karol, Kenneth G.
Fredericq, Suzanne
Zechman, Frederick W.
Lopez-Bautista, Juan M.
author_facet Leliaert, Frederik
Tronholm, Ana
Lemieux, Claude
Turmel, Monique
DePriest, Michael S.
Bhattacharya, Debashish
Karol, Kenneth G.
Fredericq, Suzanne
Zechman, Frederick W.
Lopez-Bautista, Juan M.
author_sort Leliaert, Frederik
collection PubMed
description The green plants (Viridiplantae) are an ancient group of eukaryotes comprising two main clades: the Chlorophyta, which includes a wide diversity of green algae, and the Streptophyta, which consists of freshwater green algae and the land plants. The early-diverging lineages of the Viridiplantae comprise unicellular algae, and multicellularity has evolved independently in the two clades. Recent molecular data have revealed an unrecognized early-diverging lineage of green plants, the Palmophyllales, with a unique form of multicellularity, and typically found in deep water. The phylogenetic position of this enigmatic group, however, remained uncertain. Here we elucidate the evolutionary affinity of the Palmophyllales using chloroplast genomic, and nuclear rDNA data. Phylogenetic analyses firmly place the palmophyllalean Verdigellas peltata along with species of Prasinococcales (prasinophyte clade VI) in the deepest-branching clade of the Chlorophyta. The small, compact and intronless chloroplast genome (cpDNA) of V. peltata shows striking similarities in gene content and organization with the cpDNAs of Prasinococcales and the streptophyte Mesostigma viride, indicating that cpDNA architecture has been extremely well conserved in these deep-branching lineages of green plants. The phylogenetic distinctness of the Palmophyllales-Prasinococcales clade, characterized by unique ultrastructural features, warrants recognition of a new class of green plants, Palmophyllophyceae class. nov.
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spelling pubmed-48606202016-05-20 Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov. Leliaert, Frederik Tronholm, Ana Lemieux, Claude Turmel, Monique DePriest, Michael S. Bhattacharya, Debashish Karol, Kenneth G. Fredericq, Suzanne Zechman, Frederick W. Lopez-Bautista, Juan M. Sci Rep Article The green plants (Viridiplantae) are an ancient group of eukaryotes comprising two main clades: the Chlorophyta, which includes a wide diversity of green algae, and the Streptophyta, which consists of freshwater green algae and the land plants. The early-diverging lineages of the Viridiplantae comprise unicellular algae, and multicellularity has evolved independently in the two clades. Recent molecular data have revealed an unrecognized early-diverging lineage of green plants, the Palmophyllales, with a unique form of multicellularity, and typically found in deep water. The phylogenetic position of this enigmatic group, however, remained uncertain. Here we elucidate the evolutionary affinity of the Palmophyllales using chloroplast genomic, and nuclear rDNA data. Phylogenetic analyses firmly place the palmophyllalean Verdigellas peltata along with species of Prasinococcales (prasinophyte clade VI) in the deepest-branching clade of the Chlorophyta. The small, compact and intronless chloroplast genome (cpDNA) of V. peltata shows striking similarities in gene content and organization with the cpDNAs of Prasinococcales and the streptophyte Mesostigma viride, indicating that cpDNA architecture has been extremely well conserved in these deep-branching lineages of green plants. The phylogenetic distinctness of the Palmophyllales-Prasinococcales clade, characterized by unique ultrastructural features, warrants recognition of a new class of green plants, Palmophyllophyceae class. nov. Nature Publishing Group 2016-05-09 /pmc/articles/PMC4860620/ /pubmed/27157793 http://dx.doi.org/10.1038/srep25367 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Leliaert, Frederik
Tronholm, Ana
Lemieux, Claude
Turmel, Monique
DePriest, Michael S.
Bhattacharya, Debashish
Karol, Kenneth G.
Fredericq, Suzanne
Zechman, Frederick W.
Lopez-Bautista, Juan M.
Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.
title Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.
title_full Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.
title_fullStr Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.
title_full_unstemmed Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.
title_short Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.
title_sort chloroplast phylogenomic analyses reveal the deepest-branching lineage of the chlorophyta, palmophyllophyceae class. nov.
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4860620/
https://www.ncbi.nlm.nih.gov/pubmed/27157793
http://dx.doi.org/10.1038/srep25367
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