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

0423124 - ÚEB 2014 RIV GB eng J - Journal Article
Pont, C. - Murat, F. - Bidet, Y. - Doležel, Jaroslav - Fahima, T. - Budak, H. - Feuillet, C. - Salse, J. … Total 18 authors
Wheat syntenome unveils new evidences of contrasted evolutionary plasticity between paleo- and neoduplicated subgenomes.
Plant Journal. Roč. 76, č. 6 (2013), s. 1030-1044. ISSN 0960-7412. E-ISSN 1365-313X
Institutional research plan: CEZ:AV0Z50380511
Keywords : paleogenomics * dominance * partitioning
Subject RIV: EB - Genetics ; Molecular Biology
Impact factor: 6.815, year: 2013

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.
Permanent Link: http://hdl.handle.net/11104/0229359