Cargando…

Has the Polyploid Wave Ebbed?

There was a wave of whole genome duplications (WGD) during and subsequent to the K-Pg interface, which was followed by an increase in the proportion of species that were polyploid. I consider why this wave of polyploid speciation has continued to rise through the divergent evolution of polyploid lin...

Descripción completa

Detalles Bibliográficos
Autor principal: Levin, Donald A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7077508/
https://www.ncbi.nlm.nih.gov/pubmed/32211006
http://dx.doi.org/10.3389/fpls.2020.00251
_version_ 1783507448056774656
author Levin, Donald A.
author_facet Levin, Donald A.
author_sort Levin, Donald A.
collection PubMed
description There was a wave of whole genome duplications (WGD) during and subsequent to the K-Pg interface, which was followed by an increase in the proportion of species that were polyploid. I consider why this wave of polyploid speciation has continued to rise through the divergent evolution of polyploid lineages, and through rounds of homoploid and heteroploid chromosomal change. I also consider why the polyploid speciation wave is likely to rise in the next millennium. I propose that the speed of polyploid genesis through ploidal increase and through diversification among polyploids likely will be greater than the speed of diploid speciation. The increase in polyploid diversity is expected to lag well behind episodes of WGD, owing to the very long period required for species diversification either by lineage splitting or additional rounds of polyploidy, in addition to the long period of genomic adjustment to higher ploidal levels in neopolyploids.
format Online
Article
Text
id pubmed-7077508
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-70775082020-03-24 Has the Polyploid Wave Ebbed? Levin, Donald A. Front Plant Sci Plant Science There was a wave of whole genome duplications (WGD) during and subsequent to the K-Pg interface, which was followed by an increase in the proportion of species that were polyploid. I consider why this wave of polyploid speciation has continued to rise through the divergent evolution of polyploid lineages, and through rounds of homoploid and heteroploid chromosomal change. I also consider why the polyploid speciation wave is likely to rise in the next millennium. I propose that the speed of polyploid genesis through ploidal increase and through diversification among polyploids likely will be greater than the speed of diploid speciation. The increase in polyploid diversity is expected to lag well behind episodes of WGD, owing to the very long period required for species diversification either by lineage splitting or additional rounds of polyploidy, in addition to the long period of genomic adjustment to higher ploidal levels in neopolyploids. Frontiers Media S.A. 2020-03-10 /pmc/articles/PMC7077508/ /pubmed/32211006 http://dx.doi.org/10.3389/fpls.2020.00251 Text en Copyright © 2020 Levin. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Levin, Donald A.
Has the Polyploid Wave Ebbed?
title Has the Polyploid Wave Ebbed?
title_full Has the Polyploid Wave Ebbed?
title_fullStr Has the Polyploid Wave Ebbed?
title_full_unstemmed Has the Polyploid Wave Ebbed?
title_short Has the Polyploid Wave Ebbed?
title_sort has the polyploid wave ebbed?
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7077508/
https://www.ncbi.nlm.nih.gov/pubmed/32211006
http://dx.doi.org/10.3389/fpls.2020.00251
work_keys_str_mv AT levindonalda hasthepolyploidwaveebbed