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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Biodiversity and Polyploidy • BP Team

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Context and Issues

Genetic variability remains a limiting factor for crop adaptation and despite a large variability exists within the species or in the closely related species. Its optimal use requires to collect accessions of various geographic areas, to characterize these collections (genetically and phenotypically), and to optimize crosses and the use of recombination process in order to rapidly and efficiently introgress small regions of interest in crop varieties. 


  • To collect, maintain, describe and diffuse Brassica and Solanum genetic resources (including wild populations and closely related species).
  • To study the structural/functional diversity and evolutionary dynamics of diploid and polyploid Brassica species
  • To deepen our knowledge on the genetic and epigenetic factors regulating recombination (homologous and homoeologous) in Brassica polyploids.  
  • To optimize the introduction of genes of interest from related species into oilseed rape genome via an efficient use of homoeologous recombination (between related genomes).
  • To assess the gene flow from Brassica crops to their closely related  weeds

Expertise & Skills

Genetic mapping, cytogenetics, functional genetics (including Crispr_Cas9), cryopreservation, biotechnologies related to NGS sequencing, comparative (epi)genomics, bio-informaticsSkills

Involvement in national platforms

  • Our Biological Resource Center (BRC BrACySol) is in charge of the description (phenotype and genotype), multiplication and distribution of genetic resources.
  • The Molecular Cytogenetics Platform (PCMV) provides an infrastructure and abilities to support research projects related to the genome structure and evolution of different plant species (Brassica, Wheat, Tomato, Cotton, Grapevine, Lolium, Lupinus…).
Team leader

Anne-Marie Chèvre, Senior Scientist

Phone: (+33) 2 23 48 51 31

Anne-Marie Chèvre, Biodiversity and Polyploidy team leader