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Genomics of the origin and evolution of Citrus

Genomics of the origin and evolution of Citrus. Wu Guohong Albert, Terol Javier F., Ibáñez Victoria, López-García Antonio, Pérez-Román Estela, Borredá Carles, Domingo Concha, Tadeo Francisco, Carbonell-Caballero Jose, Alonso Roberto, Curk Franck, Du Dongliang, Ollitrault Patrick, Roose Mikeal L., Dopazo Joaquin, Gmitter Frederick G., Rokhsar Daniel S., Talon Manuel. 2018. Nature, 20 p.
https://doi.org/10.1038/nature25447

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Article de revue ; Article de revue à facteur d'impact

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Economie-gestion; Psychologie-éthologie-ergonomie

Résumé : The genus Citrus, comprising some of the most widely cultivated fruit crops worldwide, includes an uncertain number of species. Here we describe ten natural citrus species, using genomic, phylogenetic and biogeographic analyses of 60 accessions representing diverse citrus germ plasms, and propose that citrus diversified during the late Miocene epoch through a rapid southeast Asian radiation that correlates with a marked weakening of the monsoons. A second radiation enabled by migration across the Wallace line gave rise to the Australian limes in the early Pliocene epoch. Further identification and analyses of hybrids and admixed genomes provides insights into the genealogy of major commercial cultivars of citrus. Among mandarins and sweet orange, we find an extensive network of relatedness that illuminates the domestication of these groups. Widespread pummelo admixture among these mandarins and its correlation with fruit size and acidity suggests a plausible role of pummelo introgression in the selection of palatable mandarins. This work provides a new evolutionary framework for the genus Citrus. (Résumé d'auteur)

Mots-clés Agrovoc : Citrus

Classification Agris : F30 - Génétique et amélioration des plantes
F70 - Taxonomie végétale et phyto-géographie

Auteurs et affiliations

  • Wu Guohong Albert, Joint Genome Institute (USA)
  • Terol Javier F., IVIA (ESP)
  • Ibáñez Victoria, IVIA (ESP)
  • López-García Antonio, IVIA (ESP)
  • Pérez-Román Estela, IVIA (ESP)
  • Borredá Carles, IVIA (ESP)
  • Domingo Concha, IVIA (ESP)
  • Tadeo Francisco, IVIA (ESP)
  • Carbonell-Caballero Jose, CIPF (ESP)
  • Alonso Roberto, CIPF (ESP)
  • Curk Franck, INRA (FRA)
  • Du Dongliang, University of Florida (USA)
  • Ollitrault Patrick, CIRAD-BIOS-UMR AGAP (GLP)
  • Roose Mikeal L., UC (USA)
  • Dopazo Joaquin, CIPF (ESP)
  • Gmitter Frederick G., University de Florida (USA)
  • Rokhsar Daniel S., Joint Genome Institute (USA)
  • Talon Manuel, IVIA (ESP)

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