The objective of the PolySuccess project is to identify the molecular mechanisms involved in the evolutionary dynamic, stabilisation and adaptive success of a polyploid species, using Brassica napus (oilseed rape, 2n= 4x= 38) as a model system. To that purpose, the nuclear genome (coverage: 50X) of several B. napus varieties as well as synthetics and their diploid parents (B. rapa: turnip; B. oleracea: cabbage) were sequenced, allowing to decipher the patterns of structural evolution that occurred immediately after the formation of an allopolyploid species and along its evolution. The impact of these rearrangements on the functional evolutionary dynamic of the duplicated genes and on the species adaptation will be explored.
Publications :
- Mathieu Rousseau-Gueutin et al. Long-read assembly of the Brassica napus reference genome Darmor-bzh GigaScience 2020, vol. 9, issue 12
- Julien Boutte et al. Genome Size Variation and Comparative Genomics Reveal Intraspecific Diversity in Brassica rapa Frontiers in Plant Science 2020, vol. 11
- Julie Ferreira de Carvalho et al. Cytonuclear interactions remain stable during allopolyploid evolution despite repeated whole‐genome duplications in Brassica The Plant Journal 2019, vol. 98, issue 3
- Caroline Belser et al. Chromosome-scale assemblies of plant genomes using nanopore long reads and optical maps Nature Plants 2018, vol. 4, issue 11