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

Caroline Pont, Florent Murat, Sébastien Guizard, Raphael Flores, Séverine Foucrier, Yannick Bidet, Umar Masood Quraishi, Michael Alaux, Jaroslav Doležel, Tzion Fahima, Hikmet Budak, Beat Keller, Silvio Salvi, Marco MacCaferri, Delphine Steinbach, Catherine Feuillet, Hadi Quesneville, Jérôme Salse

Research output: Contribution to journalArticlepeer-review

Abstract

Bread wheat derives from a grass ancestor structured in seven 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 conserved orthologous set (COS) 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 supra-dominant (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.

Original languageEnglish
Pages (from-to)1030-1044
Number of pages15
JournalPlant Journal
Volume76
Issue number6
DOIs
StatePublished - Dec 2013

Keywords

  • conserved orthologous set
  • dominance
  • paleogenomics
  • partitioning
  • single nucleotide polymorphism

ASJC Scopus subject areas

  • Genetics
  • Plant Science
  • Cell Biology

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