No evidence for the radiation time lag model after whole genome duplications in Teleostei.

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Ressource 1Download: journal.pone.0176384.pdf (1889.08 [Ko])
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Version: Final published version
Serval ID
serval:BIB_6A5C276B250D
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
No evidence for the radiation time lag model after whole genome duplications in Teleostei.
Journal
PLoS One
Author(s)
Laurent S., Salamin N., Robinson-Rechavi M.
ISSN
1932-6203 (Electronic)
ISSN-L
1932-6203
Publication state
Published
Issued date
2017
Peer-reviewed
Oui
Volume
12
Number
4
Pages
e0176384
Language
english
Abstract
The short and long term effects of polyploidization on the evolutionary fate of lineages is still unclear despite much interest. First recognized in land plants, it has become clear that polyploidization is widespread in eukaryotes, notably at the origin of vertebrates and teleost fishes. Many hypotheses have been proposed to link the species richness of lineages and whole genome duplications. For instance, the radiation time lag model suggests that paleopolyploidy would favour the apparition of new phenotypic traits, although the radiation of the lineage would not occur before a later dispersion event. Some results indicate that this model may be observed during land plant evolution. In this work, we test predictions of the radiation time lag model using both fossil data and molecular phylogenies in ancient and more recent teleost whole genome duplications. We fail to find any evidence of delayed increase of the species number after any of these events and conclude that paleopolyploidization still remains to be unambiguously linked to taxonomic diversity in teleosts.

Pubmed
Web of science
Open Access
Yes
Create date
07/02/2017 9:54
Last modification date
20/08/2019 14:25
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