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Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution

Genome sequencing has demonstrated that besides frequent small-scale duplications, large-scale duplication events such as whole genome duplications (WGDs) are found on many branches of the evolutionary tree of life. Especially in the plant lineage, there is evidence for recurrent WGDs, and the ances...

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Autores principales: Vanneste, Kevin, Maere, Steven, Van de Peer, Yves
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4071526/
https://www.ncbi.nlm.nih.gov/pubmed/24958926
http://dx.doi.org/10.1098/rstb.2013.0353
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author Vanneste, Kevin
Maere, Steven
Van de Peer, Yves
author_facet Vanneste, Kevin
Maere, Steven
Van de Peer, Yves
author_sort Vanneste, Kevin
collection PubMed
description Genome sequencing has demonstrated that besides frequent small-scale duplications, large-scale duplication events such as whole genome duplications (WGDs) are found on many branches of the evolutionary tree of life. Especially in the plant lineage, there is evidence for recurrent WGDs, and the ancestor of all angiosperms was in fact most likely a polyploid species. The number of WGDs found in sequenced plant genomes allows us to investigate questions about the roles of WGDs that were hitherto impossible to address. An intriguing observation is that many plant WGDs seem associated with periods of increased environmental stress and/or fluctuations, a trend that is evident for both present-day polyploids and palaeopolyploids formed around the Cretaceous–Palaeogene (K–Pg) extinction at 66 Ma. Here, we revisit the WGDs in plants that mark the K–Pg boundary, and discuss some specific examples of biological innovations and/or diversifications that may be linked to these WGDs. We review evidence for the processes that could have contributed to increased polyploid establishment at the K–Pg boundary, and discuss the implications on subsequent plant evolution in the Cenozoic.
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spelling pubmed-40715262014-08-05 Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution Vanneste, Kevin Maere, Steven Van de Peer, Yves Philos Trans R Soc Lond B Biol Sci Articles Genome sequencing has demonstrated that besides frequent small-scale duplications, large-scale duplication events such as whole genome duplications (WGDs) are found on many branches of the evolutionary tree of life. Especially in the plant lineage, there is evidence for recurrent WGDs, and the ancestor of all angiosperms was in fact most likely a polyploid species. The number of WGDs found in sequenced plant genomes allows us to investigate questions about the roles of WGDs that were hitherto impossible to address. An intriguing observation is that many plant WGDs seem associated with periods of increased environmental stress and/or fluctuations, a trend that is evident for both present-day polyploids and palaeopolyploids formed around the Cretaceous–Palaeogene (K–Pg) extinction at 66 Ma. Here, we revisit the WGDs in plants that mark the K–Pg boundary, and discuss some specific examples of biological innovations and/or diversifications that may be linked to these WGDs. We review evidence for the processes that could have contributed to increased polyploid establishment at the K–Pg boundary, and discuss the implications on subsequent plant evolution in the Cenozoic. The Royal Society 2014-08-05 /pmc/articles/PMC4071526/ /pubmed/24958926 http://dx.doi.org/10.1098/rstb.2013.0353 Text en http://creativecommons.org/licenses/by/3.0/ © 2014 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Articles
Vanneste, Kevin
Maere, Steven
Van de Peer, Yves
Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution
title Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution
title_full Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution
title_fullStr Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution
title_full_unstemmed Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution
title_short Tangled up in two: a burst of genome duplications at the end of the Cretaceous and the consequences for plant evolution
title_sort tangled up in two: a burst of genome duplications at the end of the cretaceous and the consequences for plant evolution
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4071526/
https://www.ncbi.nlm.nih.gov/pubmed/24958926
http://dx.doi.org/10.1098/rstb.2013.0353
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