LCO receptors involved in arbuscular mycorrhiza are functional for rhizobia perception in legumes
Girardin, ArianeLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France -
Wang, TongmingLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France -
Ding, YiLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Keller, JeanLaboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Auzeville, BP42617, 31326 Castanet-Tolosan, France
Buendia, LuisLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Gaston, MéganeLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Ribeyre, CamilleLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Gasciolli, VirginieLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Auriac, Marie-ChristineLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France - Institut Fédératif de Recherche 3450, Université de Toulouse, CNRS, UPS, Plateforme Imagerie TRI-Genotoul, 31326 Castanet-Tolosan, France
Vernié, TatianaLaboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Auzeville, BP42617, 31326 Castanet-Tolosan, France
Bendahmane, AbdelhafidIPS2, Institute of Plant Science, INRA, Paris-Saclay, 91190 Gif-sur-Yvette, France
Ried, Martina KatharinaGenetics, Faculty of Biology, University of Munich (LMU), 82152 Martinsried, Germany
Parniske, MartinGenetics, Faculty of Biology, University of Munich (LMU), 82152 Martinsried, Germany
Morel, PatriceLaboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, F-69342 Lyon, France
Vandenbussche, MichielLaboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, F-69342 Lyon, France
Schorderet, MartineDepartment of Biology, University of Fribourg, Switzerland
Reinhardt, DidierDepartment of Biology, University of Fribourg, Switzerland
Delaux, Pierre-MarcLaboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, UPS, Auzeville, BP42617, 31326 Castanet-Tolosan, France
Bono, Jean-JacquesLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Lefebvre, BenoitLIPM, Université de Toulouse, INRA, CNRS, 31326 Castanet-Tolosan, France
Current Biology. - 2019, vol. 29, no. 24, p. 4249-4259.e5
English
Bacterial lipo-chitooligosaccharides (LCOs) are key mediators of the nitrogen-fixing root nodule symbiosis (RNS) in legumes. The isolation of LCOs from arbuscular mycorrhizal fungi suggested that LCOs are also signaling molecules in arbuscular mycorrhiza (AM). However, the corresponding plant receptors have remained uncharacterized. Here we show that petunia and tomato mutants in the LysM receptor-like kinases LYK10 are impaired in AM formation. Petunia and tomato LYK10 proteins have a high affinity for LCOs (Kd in the nM range) comparable to that previously reported for a legume LCO receptor essential for the RNS. Interestingly, the tomato and petunia LYK10 promoters, when introduced into a legume, were active in nodules similarly to the promoter of the legume orthologous gene. Moreover, tomato and petunia LYK10 coding sequences restored nodulation in legumes mutated in their orthologs. This combination of genetic and biochemical data clearly pinpoints Solanaceous LYK10 as part of an ancestral LCO perception system involved in AM establishment, which has been directly recruited during evolution of the RNS in legumes.