The Pea genome and after...

Pea Genomics : What Else ?

BAP GEAPSIBAPGEAPSI; Legume use in arable rotations provides several significant ecological services that can help to meet the challenge of delivering high quality food in an environmentally sustainable manner. Among legumes, pea has long been a model species for geneticists. But despite its major role in the discovery of the laws of genetics by Mendel, the keys to decipher the impressive phenotypic diversity of the species have been lacking until recently. Under the impetus of large national and international programs, and driven by innovations in informatics and biotechnology, useful genomic resources are now available in pea. High precision mapping of the pea genome, an atlas of the expr…

Complementary approaches towards the discovery of genes controlling yield in pea

International audience; Pea is one of the most important grain legumes in the world. Improving pea yield is a critical breedingtarget in the current context of consumers’ increasing demand for plant proteins for food and feed. Becauseof its polygenic nature and the impact of the environment, breeding for higher yield is challenging. Weinvestigated the genetic determinism of yield (SW), seed number (SN) and thousand seed weight (TSW) usingboth linkage and linkage-disequilibrium approaches.Nine interconnected mapping populations, representing a total of 1,213 recombinant inbred lineswere phenotyped for SW, SN and TSW in six different field environments. These lines were genotyped usingthe Gen…

The pea genome and beyond

International audience; The recently generated pea genome sequence is a significant step for the pea research community towards unravelling functional diversity and establishing genome-enabled breeding. Re-sequencing data reveal the considerable diversity present in the Pisum genus. High-throughput genotyping is now available to explore large collections using the exome capture technology in genome-wide association studies (GWAS) or tackle map-based QTL cloning. Furthermore, genomic selection strategies have been developed in order to tackle complex traits such as yield regularity and improve selection efficiency. We will present snapshots of these results and discuss potential transfer of …