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Wheat syntenome unveils new evidences of contrasted evolutionary plasticity between paleo- and neoduplicated subgenomes

Pont, Caroline and Murat, Florent and Guizard, Sebastien and Flores, Raphael and Foucrier, Severine and Bidet, Yannick and Quraishi, Umar Masood and Alaux, Michael and Dolezel, Jaroslav and Fahima, Tzion and Budak, Hikmet and Keller, Beat and Salvi, Silvio and Maccaferri, Marco and Steinbach, Delphine and Feuillet, Catherine and Quesneville, Hadi and Salse, Jerome (2013) Wheat syntenome unveils new evidences of contrasted evolutionary plasticity between paleo- and neoduplicated subgenomes. Plant Journal, 76 (6). pp. 1030-1044. ISSN 0960-7412 (Print) 1365-313X (Online)

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Official URL: http://dx.doi.org/10.1111/tpj.12366

Abstract

Bread wheat derives from a grass ancestor structured in 7 protochromosomes followed by a paleotetraploidization to reach a 12 chromosomes intermediate and a neohexaploidization (involving subgenomes A, B and D) event that finally shaped the 21 modern chromosomes. Insights into wheat syntenome in sequencing COS (Conserved Orthologous Set) genes unravelled differences in genomic structure (such as gene conservation and diversity) and genetical landscape (such as recombination pattern) between ancestral as well as recent duplicated blocks. Contrasted evolutionary plasticity is observed where the B subgenome appears more sensitive (i.e. plastic) in contrast to A as dominant (i.e. stable) in response to the neotetraploidization and D subgenome as supradominant (i.e. pivotal) in response to the neohexaploidization event. Finally, the wheat syntenome, delivered through a public web interface PlantSyntenyViewer at http://urgi.versailles.inra.fr/synteny-wheat, can be considered as a guide for accelerated dissection of major agronomical traits in wheat.

Item Type:Article
Uncontrolled Keywords:paleogenomics; dominance; partitioning; conserved orthologous set; single nucleotide polymorphism
Subjects:UNSPECIFIED
ID Code:22335
Deposited By:Hikmet Budak
Deposited On:22 Jan 2014 09:32
Last Modified:22 Jan 2014 09:32

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