July 19, 2019  |  

The Rosa genome provides new insights into the domestication of modern roses.

Authors: Raymond, Olivier and Gouzy, Jérôme and Just, Jérémy and Badouin, Hélène and Verdenaud, Marion and Lemainque, Arnaud and Vergne, Philippe and Moja, Sandrine and Choisne, Nathalie and Pont, Caroline and Carrère, Sébastien and Caissard, Jean-Claude and Couloux, Arnaud and Cottret, Ludovic and Aury, Jean-Marc and Szécsi, Judit and Latrasse, David and Madoui, Mohammed-Amin and François, Léa and Fu, Xiaopeng and Yang, Shu-Hua and Dubois, Annick and Piola, Florence and Larrieu, Antoine and Perez, Magali and Labadie, Karine and Perrier, Lauriane and Govetto, Benjamin and Labrousse, Yoan and Villand, Priscilla and Bardoux, Claudia and Boltz, Véronique and Lopez-Roques, Céline and Heitzler, Pascal and Vernoux, Teva and Vandenbussche, Michiel and Quesneville, Hadi and Boualem, Adnane and Bendahmane, Abdelhafid and Liu, Chang and Le Bris, Manuel and Salse, Jérôme and Baudino, Sylvie and Benhamed, Moussa and Wincker, Patrick and Bendahmane, Mohammed

Roses have high cultural and economic importance as ornamental plants and in the perfume industry. We report the rose whole-genome sequencing and assembly and resequencing of major genotypes that contributed to rose domestication. We generated a homozygous genotype from a heterozygous diploid modern rose progenitor, Rosa chinensis 'Old Blush'. Using single-molecule real-time sequencing and a meta-assembly approach, we obtained one of the most comprehensive plant genomes to date. Diversity analyses highlighted the mosaic origin of 'La France', one of the first hybrids combining the growth vigor of European species and the recurrent blooming of Chinese species. Genomic segments of Chinese ancestry identified new candidate genes for recurrent blooming. Reconstructing regulatory and secondary metabolism pathways allowed us to propose a model of interconnected regulation of scent and flower color. This genome provides a foundation for understanding the mechanisms governing rose traits and should accelerate improvement in roses, Rosaceae and ornamentals.

Journal: Nature genetics
DOI: 10.1038/s41588-018-0110-3
Year: 2018

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