Turning rice meiosis into mitosis

Mieulet Delphine, Jolivet Sylvie, Rivard Maud, Cromer Laurence, Vernet Aurore, Mayonove Pauline, Pereira Lucie, Droc Gaëtan, Courtois Brigitte, Guiderdoni Emmanuel, Mercier Raphael. 2016. Turning rice meiosis into mitosis. Cell Research, 26 (11) : 1242-1254.

https://doi.org/10.1038/cr.2016.117

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

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Quartile : Outlier, Sujet : CELL BIOLOGY

Résumé : Introduction of clonal reproduction through seeds (apomixis) in crops has the potential to revolutionize agriculture by allowing self-propagation of any elite variety, in particular F1 hybrids. In the sexual model plant Arabidopsis thaliana synthetic clonal reproduction through seeds can be artificially implemented by (i) combining three mutations to turn meiosis into mitosis (MiMe) and (ii) crossing the obtained clonal gametes with a line expressing modified CENH3 and whose genome is eliminated in the zygote. Here we show that additional combinations of mutations can turn Arabidopsis meiosis into mitosis and that a combination of three mutations in rice (Oryza sativa) efficiently turns meiosis into mitosis, leading to the production of male and female clonal diploid gametes in this major crop. Successful implementation of the MiMe technology in the phylogenetically distant eudicot Arabidopsis and monocot rice opens doors for its application to any flowering plant and paves the way for introducing apomixis in crop species.

Mots-clés Agrovoc : Oryza sativa, Arabidopsis thaliana, mitose, méiose, clone, apomixie, mutation, phylogénie, génotype, génie génétique

Mots-clés géographiques Agrovoc : France

Mots-clés libres : Rice, Meiosis

Classification Agris : F63 - Physiologie végétale - Reproduction
F30 - Génétique et amélioration des plantes
F02 - Multiplication végétative des plantes

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

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