Genetic Contribution of Paleopolyploidy to Adaptive Evolution in Angiosperms

Ancient whole-genome duplications (WGDs or polyploidy) are prevalent in plants, and some WGDs occurred during the timing of severe global environmental changes. It has been suggested that WGDs may have contributed to plant adaptation. However, this still lacks empirical evidence at the genetic level...

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Bibliographic Details
Published in:Molecular plant 2020-01, Vol.13 (1), p.59-71
Main Authors: Wu, Shengdan, Han, Baocai, Jiao, Yuannian
Format: Article
Language:English
Subjects:
adaptive evolution
Cretaceous-Paleocene boundary
gene regulatory network
paleopolyploidy
phylogenomic
whole-genome duplication
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Summary:Ancient whole-genome duplications (WGDs or polyploidy) are prevalent in plants, and some WGDs occurred during the timing of severe global environmental changes. It has been suggested that WGDs may have contributed to plant adaptation. However, this still lacks empirical evidence at the genetic level to support the hypothesis. Here, we investigated the survivors of gene duplicates from multiple ancient WGD events on the major branches of angiosperm phylogeny, and aimed to explore genetic evidence supporting the significance of polyploidy. Duplicated genes co-retained from three waves of independent WGDs (∼120 million years ago [Ma], ∼66, and
ISSN:1674-2052
1752-9867
DOI:10.1016/j.molp.2019.10.012