作者
Sateesh Kagale, Stephen J Robinson, John Nixon, Rong Xiao, Terry Huebert, Janet Condie, Dallas Kessler, Wayne E Clarke, Patrick P Edger, Matthew G Links, Andrew G Sharpe, Isobel AP Parkin
发表日期
2014/7/1
期刊
The Plant Cell
卷号
26
期号
7
页码范围
2777-2791
出版商
American Society of Plant Biologists
简介
The Brassicaceae (Cruciferae) family, owing to its remarkable species, genetic, and physiological diversity as well as its significant economic potential, has become a model for polyploidy and evolutionary studies. Utilizing extensive transcriptome pyrosequencing of diverse taxa, we established a resolved phylogeny of a subset of crucifer species. We elucidated the frequency, age, and phylogenetic position of polyploidy and lineage separation events that have marked the evolutionary history of the Brassicaceae. Besides the well-known ancient α (47 million years ago [Mya]) and β (124 Mya) paleopolyploidy events, several species were shown to have undergone a further more recent (∼7 to 12 Mya) round of genome multiplication. We identified eight whole-genome duplications corresponding to at least five independent neo/mesopolyploidy events. Although the Brassicaceae family evolved from other …
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S Kagale, SJ Robinson, J Nixon, R Xiao, T Huebert… - The Plant Cell, 2014