A receptor-like kinase enhances sunflower resistance to Orobanche cumana

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Duriez, Pauline | Vautrin, Sonia | Auriac, Marie-Christine | Bazerque, Julia | Boniface, Marie-Claude | Callot, Caroline | Carrere, Sébastien | Cauet, Stéphane | Chabaud, Mireille | Gentou, Fabienne | Lopez-Sendon, Marta | Paris, Clémence | Pégot-Espagnet, Prune | Rousseaux, Jean-Christophe | Perez-Vich, Begona | Velasco, Leonardo | Bergès, Hélène | Piquemal, Joël | Muños, Stéphane

Edité par CCSD ; Nature Publishing Group -

International audience. Orobanche cumana (sunflower broomrape) is an obligate parasitic plant that infects sunflower roots, causing yield losses. Here, by using a map-based cloning strategy, we identified HaOr7-a gene that confers resistance to O. cumana race F-which was found to encode a leucine-rich repeat receptor-like kinase. The complete HAOR7 protein is present in resistant lines of sunflower and prevents O. cumana from connecting to the vascular system of sunflower roots, whereas susceptible lines encode a truncated protein that lacks transmembrane and kinase domains.

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