Title

Data from: Ancestral polyploidy in seed plants and angiosperms

Creators

Lena Landherr, Department of Biology, Institute of Molecular Evolutionary Genetics, Pennsylvania State University
Douglas E. Soltis, Department of Biology, University of Florida
Pamela S. Soltis, Florida Museum of Natural History, University of Florida
André S. Chanderbali, Department of Biology, University of Florida
Haiying Liang, Department of Genetics and Biochemistry, Clemson University
Claude W. Depamphilis, Department of Biology, Institute of Molecular Evolutionary Genetics, Pennsylvania State University
Yuannian Jiao, Department of Biology, Institute of Molecular Evolutionary Genetics, Pennsylvania State University
Paula E. Ralph, Department of Biology, Institute of Molecular Evolutionary Genetics, Pennsylvania State University
Scott E. Schlarbaum, Department of Forestry, Wildlife and Fisheries, Institute of Agriculture, University of Tennessee
Yi Hu, Department of Biology, Institute of Molecular Evolutionary Genetics, Pennsylvania State University
Saravanaraj Ayyampalayam, Department of Plant Biology, University of Georgia
Lynn P. Tomsho, Center for Comparative Genomics, Center for Infectious Disease Dynamics, Pennsylvania State University
Jim Leebens-Mack, Department of Plant Biology, University of Georgia
Norman J. Wickett, Department of Biology, Institute of Molecular Evolutionary Genetics, Pennsylvania State University
Sandra W. Clifton, Genome Center at Washington University
Stephan C. Schuster, Center for Comparative Genomics, Center for Infectious Disease Dynamics, Pennsylvania State University
Hong Ma, Intercollege Graduate Degree Program in Plant Biology, Pennsylvania State University

Description

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 organisms1, 2, 3, especially plants. The success of angiosperms has been attributed, in part, to innovations associated with gene or whole-genome duplications4, 5, 6, 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 use comprehensive phylogenomic analyses of sequenced plant genomes and more than 12.6 million new expressed-sequence-tag sequences from phylogenetically pivotal lineages to elucidate two groups of ancient gene duplications—one in the common ancestor of extant seed plants and the other in the common ancestor of extant angiosperms. Gene duplication events were intensely concentrated around 319 and 192 million years ago, implicating two WGDs in ancestral lineages shortly before the diversification of extant seed plants and extant angiosperms, respectively. Significantly, these ancestral WGDs resulted in the diversification of regulatory genes important to seed and flower development, suggesting that they were involved in major innovations that ultimately contributed to the rise and eventual dominance of seed plants and angiosperms.

Publication Date

2-3-2011

Publisher

Zenodo

DOI

10.5061/dryad.8546

Document Type

Data Set

Identifier

4974396

Embargo Date

2-3-2011

Version

1

Link to Full Text

Share

COinS