Population genomics of apricots unravels domestication history and adaptive events

Alexis Groppi, Shuo Liu, Amandine Cornille, Stéphane Decroocq, Quynh Trang Bui, David Tricon, Corinne Cruaud, Sandrine Arribat, Caroline Belser, William Marande, Jérôme Salse, Cécile Huneau, Nathalie Rodde, Wassim Rhalloussi, Stéphane Cauet, Benjamin Istace, Erwan Denis, Sébastien Carrère, Jean Marc Audergon, Guillaume RochPatrick Lambert, Tetyana Zhebentyayeva, Wei Sheng Liu, Olivier Bouchez, Céline Lopez-Roques, Rémy Félix Serre, Robert Debuchy, Joseph Tran, Patrick Wincker, Xilong Chen, Pierre Pétriacq, Aurélien Barre, Macha Nikolski, Jean Marc Aury, Albert Glenn Abbott, Tatiana Giraud, Véronique Decroocq

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Among crop fruit trees, the apricot (Prunus armeniaca) provides an excellent model to study divergence and adaptation processes. Here, we obtain nearly 600 Armeniaca apricot genomes and four high-quality assemblies anchored on genetic maps. Chinese and European apricots form two differentiated gene pools with high genetic diversity, resulting from independent domestication events from distinct wild Central Asian populations, and with subsequent gene flow. A relatively low proportion of the genome is affected by selection. Different genomic regions show footprints of selection in European and Chinese cultivated apricots, despite convergent phenotypic traits, with predicted functions in both groups involved in the perennial life cycle, fruit quality and disease resistance. Selection footprints appear more abundant in European apricots, with a hotspot on chromosome 4, while admixture is more pervasive in Chinese cultivated apricots. Our study provides clues to the biology of selected traits and targets for fruit tree research and breeding.

Original languageEnglish (US)
Article number3956
JournalNature communications
Volume12
Issue number1
DOIs
StatePublished - Dec 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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