Evolution of genome size and complexity in Pinus.

Genome evolution in the gymnosperm lineage of seed plants has given rise to many of the most complex and largest plant genomes, however the elements involved are poorly understood.Gymny is a previously undescribed retrotransposon family in Pinus that is related to Athila elements in Arabidopsis. Gym...

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Main Authors: Alison M Morse, Daniel G Peterson, M Nurul Islam-Faridi, Katherine E Smith, Zenaida Magbanua, Saul A Garcia, Thomas L Kubisiak, Henry V Amerson, John E Carlson, C Dana Nelson, John M Davis
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2009-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC2633040?pdf=render
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spelling doaj-7d648cb8bc1749ffa1e3ec30ab68811b2020-11-25T01:22:07ZengPublic Library of Science (PLoS)PLoS ONE1932-62032009-01-0142e433210.1371/journal.pone.0004332Evolution of genome size and complexity in Pinus.Alison M MorseDaniel G PetersonM Nurul Islam-FaridiKatherine E SmithZenaida MagbanuaSaul A GarciaThomas L KubisiakHenry V AmersonJohn E CarlsonC Dana NelsonJohn M DavisGenome evolution in the gymnosperm lineage of seed plants has given rise to many of the most complex and largest plant genomes, however the elements involved are poorly understood.Gymny is a previously undescribed retrotransposon family in Pinus that is related to Athila elements in Arabidopsis. Gymny elements are dispersed throughout the modern Pinus genome and occupy a physical space at least the size of the Arabidopsis thaliana genome. In contrast to previously described retroelements in Pinus, the Gymny family was amplified or introduced after the divergence of pine and spruce (Picea). If retrotransposon expansions are responsible for genome size differences within the Pinaceae, as they are in angiosperms, then they have yet to be identified. In contrast, molecular divergence of Gymny retrotransposons together with other families of retrotransposons can account for the large genome complexity of pines along with protein-coding genic DNA, as revealed by massively parallel DNA sequence analysis of Cot fractionated genomic DNA.Most of the enormous genome complexity of pines can be explained by divergence of retrotransposons, however the elements responsible for genome size variation are yet to be identified. Genomic resources for Pinus including those reported here should assist in further defining whether and how the roles of retrotransposons differ in the evolution of angiosperm and gymnosperm genomes.http://europepmc.org/articles/PMC2633040?pdf=render
collection DOAJ
language English
format Article
sources DOAJ
author Alison M Morse
Daniel G Peterson
M Nurul Islam-Faridi
Katherine E Smith
Zenaida Magbanua
Saul A Garcia
Thomas L Kubisiak
Henry V Amerson
John E Carlson
C Dana Nelson
John M Davis
spellingShingle Alison M Morse
Daniel G Peterson
M Nurul Islam-Faridi
Katherine E Smith
Zenaida Magbanua
Saul A Garcia
Thomas L Kubisiak
Henry V Amerson
John E Carlson
C Dana Nelson
John M Davis
Evolution of genome size and complexity in Pinus.
PLoS ONE
author_facet Alison M Morse
Daniel G Peterson
M Nurul Islam-Faridi
Katherine E Smith
Zenaida Magbanua
Saul A Garcia
Thomas L Kubisiak
Henry V Amerson
John E Carlson
C Dana Nelson
John M Davis
author_sort Alison M Morse
title Evolution of genome size and complexity in Pinus.
title_short Evolution of genome size and complexity in Pinus.
title_full Evolution of genome size and complexity in Pinus.
title_fullStr Evolution of genome size and complexity in Pinus.
title_full_unstemmed Evolution of genome size and complexity in Pinus.
title_sort evolution of genome size and complexity in pinus.
publisher Public Library of Science (PLoS)
series PLoS ONE
issn 1932-6203
publishDate 2009-01-01
description Genome evolution in the gymnosperm lineage of seed plants has given rise to many of the most complex and largest plant genomes, however the elements involved are poorly understood.Gymny is a previously undescribed retrotransposon family in Pinus that is related to Athila elements in Arabidopsis. Gymny elements are dispersed throughout the modern Pinus genome and occupy a physical space at least the size of the Arabidopsis thaliana genome. In contrast to previously described retroelements in Pinus, the Gymny family was amplified or introduced after the divergence of pine and spruce (Picea). If retrotransposon expansions are responsible for genome size differences within the Pinaceae, as they are in angiosperms, then they have yet to be identified. In contrast, molecular divergence of Gymny retrotransposons together with other families of retrotransposons can account for the large genome complexity of pines along with protein-coding genic DNA, as revealed by massively parallel DNA sequence analysis of Cot fractionated genomic DNA.Most of the enormous genome complexity of pines can be explained by divergence of retrotransposons, however the elements responsible for genome size variation are yet to be identified. Genomic resources for Pinus including those reported here should assist in further defining whether and how the roles of retrotransposons differ in the evolution of angiosperm and gymnosperm genomes.
url http://europepmc.org/articles/PMC2633040?pdf=render
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