Cocoa pods, Venezuela. Photo: C.Lanaud ©CIRAD
Arabica coffee, Ethiopia. Photo: ©Jean-Pierre Labouisse
Yams in Benin. Photo: J-L Pham ©IRD
Rice harvest, Guinea. Photo: J-L Pham ©IRD
Maize corn. Photo: ©Brigitte Gouesnard

Comparative population genomics in wild and crop plants: a genome-wide phylogenic approach

Understanding the evolution of the genome of a species is a key to decipher the genetic basis of its adaptation in the wild and in agronomic contexts following domestication. At the molecular level, signatures of natural selection can be investigated through polymorphism patterns within species and divergence between species, separately or collectively. Evaluating the proportion of adaptive substitutions and which kind of genes are involved in adaptation and domestication processes are still challenging and hotly debated questions.

The Comparative population genomics project documents genomic variations in selective patterns among a wide range of crops and wild relative species, during the domestication process and at a larger evolutionary scale. Our approach is both to test expected patterns (e.g., outcrossing vs. selfing, or ancient vs. recent domestication) and to explore the diversity of genomic patterns among angiosperms.

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