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Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales

Volvocalean green algae have among the most diverse mitochondrial and plastid DNAs (mtDNAs and ptDNAs) from the eukaryotic domain. However, nearly all of the organelle genome data from this group are restricted to unicellular species, like Chlamydomonas reinhardtii, and presently only one multicellu...

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Autores principales: Hamaji, Takashi, Smith, David R., Noguchi, Hideki, Toyoda, Atsushi, Suzuki, Masahiro, Kawai-Toyooka, Hiroko, Fujiyama, Asao, Nishii, Ichiro, Marriage, Tara, Olson, Bradley J. S. C., Nozaki, Hisayoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3582580/
https://www.ncbi.nlm.nih.gov/pubmed/23468928
http://dx.doi.org/10.1371/journal.pone.0057177
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author Hamaji, Takashi
Smith, David R.
Noguchi, Hideki
Toyoda, Atsushi
Suzuki, Masahiro
Kawai-Toyooka, Hiroko
Fujiyama, Asao
Nishii, Ichiro
Marriage, Tara
Olson, Bradley J. S. C.
Nozaki, Hisayoshi
author_facet Hamaji, Takashi
Smith, David R.
Noguchi, Hideki
Toyoda, Atsushi
Suzuki, Masahiro
Kawai-Toyooka, Hiroko
Fujiyama, Asao
Nishii, Ichiro
Marriage, Tara
Olson, Bradley J. S. C.
Nozaki, Hisayoshi
author_sort Hamaji, Takashi
collection PubMed
description Volvocalean green algae have among the most diverse mitochondrial and plastid DNAs (mtDNAs and ptDNAs) from the eukaryotic domain. However, nearly all of the organelle genome data from this group are restricted to unicellular species, like Chlamydomonas reinhardtii, and presently only one multicellular species, the ∼4,000-celled Volvox carteri, has had its organelle DNAs sequenced. The V. carteri organelle genomes are repeat rich, and the ptDNA is the largest plastome ever sequenced. Here, we present the complete mtDNA and ptDNA of the colonial volvocalean Gonium pectorale, which is comprised of ∼16 cells and occupies a phylogenetic position closer to that of V. carteri than C. reinhardtii within the volvocine line. The mtDNA and ptDNA of G. pectorale are circular-mapping AT-rich molecules with respective lengths and coding densities of 16 and 222.6 kilobases and 73 and 44%. They share some features with the organelle DNAs of V. carteri, including palindromic repeats within the plastid compartment, but show more similarities with those of C. reinhardtii, such as a compact mtDNA architecture and relatively low organelle DNA intron contents. Overall, the G. pectorale organelle genomes raise several interesting questions about the origin of linear mitochondrial chromosomes within the Volvocales and the relationship between multicellularity and organelle genome expansion.
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spelling pubmed-35825802013-03-06 Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales Hamaji, Takashi Smith, David R. Noguchi, Hideki Toyoda, Atsushi Suzuki, Masahiro Kawai-Toyooka, Hiroko Fujiyama, Asao Nishii, Ichiro Marriage, Tara Olson, Bradley J. S. C. Nozaki, Hisayoshi PLoS One Research Article Volvocalean green algae have among the most diverse mitochondrial and plastid DNAs (mtDNAs and ptDNAs) from the eukaryotic domain. However, nearly all of the organelle genome data from this group are restricted to unicellular species, like Chlamydomonas reinhardtii, and presently only one multicellular species, the ∼4,000-celled Volvox carteri, has had its organelle DNAs sequenced. The V. carteri organelle genomes are repeat rich, and the ptDNA is the largest plastome ever sequenced. Here, we present the complete mtDNA and ptDNA of the colonial volvocalean Gonium pectorale, which is comprised of ∼16 cells and occupies a phylogenetic position closer to that of V. carteri than C. reinhardtii within the volvocine line. The mtDNA and ptDNA of G. pectorale are circular-mapping AT-rich molecules with respective lengths and coding densities of 16 and 222.6 kilobases and 73 and 44%. They share some features with the organelle DNAs of V. carteri, including palindromic repeats within the plastid compartment, but show more similarities with those of C. reinhardtii, such as a compact mtDNA architecture and relatively low organelle DNA intron contents. Overall, the G. pectorale organelle genomes raise several interesting questions about the origin of linear mitochondrial chromosomes within the Volvocales and the relationship between multicellularity and organelle genome expansion. Public Library of Science 2013-02-26 /pmc/articles/PMC3582580/ /pubmed/23468928 http://dx.doi.org/10.1371/journal.pone.0057177 Text en © 2013 Hamaji et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Hamaji, Takashi
Smith, David R.
Noguchi, Hideki
Toyoda, Atsushi
Suzuki, Masahiro
Kawai-Toyooka, Hiroko
Fujiyama, Asao
Nishii, Ichiro
Marriage, Tara
Olson, Bradley J. S. C.
Nozaki, Hisayoshi
Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales
title Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales
title_full Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales
title_fullStr Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales
title_full_unstemmed Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales
title_short Mitochondrial and Plastid Genomes of the Colonial Green Alga Gonium pectorale Give Insights into the Origins of Organelle DNA Architecture within the Volvocales
title_sort mitochondrial and plastid genomes of the colonial green alga gonium pectorale give insights into the origins of organelle dna architecture within the volvocales
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3582580/
https://www.ncbi.nlm.nih.gov/pubmed/23468928
http://dx.doi.org/10.1371/journal.pone.0057177
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