Ancestral polyploidy in seed plants and angiosperms

@article{Jiao2011AncestralPI,
  title={Ancestral polyploidy in seed plants and angiosperms},
  author={Yuannian Jiao and N. Wickett and Saravanaraj N. Ayyampalayam and A. Chanderbali and Lena L. Landherr and Paula E. Ralph and L. Tomsho and Y. Hu and Haiying Liang and P. Soltis and D. Soltis and S. Clifton and S. Schlarbaum and S. Schuster and H. Ma and J. Leebens-Mack and C. dePamphilis},
  journal={Nature},
  year={2011},
  volume={473},
  pages={97-100}
}
Whole-genome duplication (WGD), or polyploidy, followed by gene loss and diploidization has long been recognized as an important evolutionary force in animals, fungi and other organisms, especially plants. The success of angiosperms has been attributed, in part, to innovations associated with gene or whole-genome duplications, but evidence for proposed ancient genome duplications pre-dating the divergence of monocots and eudicots remains equivocal in analyses of conserved gene order. Here we… Expand
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Possible links between WGD, the origin of novelty, and key innovations are explored and a research path forward is proposed. Expand
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TLDR
The detected WGDs supported a model of exponential gene loss during evolution with an estimated half-life of approximately 21.6 million years, and were correlated with both the emergence of lineages with high degrees of diversification and periods of global climate changes. Expand
Recent advances in understanding the roles of whole genome duplications in evolution
TLDR
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TLDR
Improved resolution of the timing of WGD events in monocot history provides evidence for the influence of polyploidization on functional evolution and species diversification. Expand
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Remains of an ancient whole genome duplication in both cycad Encephalartos natalensis and Ginkgo biloba are identified and the most parsimonious explanation would be that this whole genome duplicate event was shared between both species and had occurred prior to their divergence, about 300 million years ago. Expand
Polyploidy-associated genome modifications during land plant evolution
TLDR
Pervasive polyploidy in angiosperms appears likely to be the major factor generating novel angiosperm genes and expanding some gene families, but most gene families lose most duplicated copies in a quasi-neutral process, and a few families are actively selected for single-copy status. Expand
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