Pervasive hybridizations in the history of wheat relatives - Université de Rennes Access content directly
Journal Articles Science Advances Year : 2019

Pervasive hybridizations in the history of wheat relatives

Jacques Dainat


Cultivated wheats are derived from an intricate history of three genomes, A, B, and D, present in both diploid and polyploid species. It was recently proposed that the D genome originated from an ancient hybridization between the A and B lineages. However, this result has been questioned, and a robust phylogeny of wheat relatives is still lacking. Using transcriptome data from all diploid species and a new methodological approach, our comprehensive phylogenomic analysis revealed that more than half of the species descend from an ancient hybridization event but with a more complex scenario involving a different parent than previously thought—Aegilops mutica, an overlooked wild species—instead of the B genome. We also detected other extensive gene flow events that could explain long-standing controversies in the classification of wheat relatives.
Fichier principal
Vignette du fichier
eaav9188.full.pdf (1.64 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-02144799 , version 1 (04-09-2019)


Attribution - NonCommercial



Sylvain Glémin, Celine Scornavacca, Jacques Dainat, Concetta Burgarella, Veronique Viader, et al.. Pervasive hybridizations in the history of wheat relatives. Science Advances , 2019, 5 (5), pp.eaav9188. ⟨10.1126/sciadv.aav9188⟩. ⟨hal-02144799⟩
237 View
128 Download



Gmail Facebook X LinkedIn More