SymRK defines a common genetic basis for plant root endosymbioses with arbuscular mycorrhiza fungi, #rhizobia$, and #Frankia$ bacteria

SymRK defines a common genetic basis for plant root endosymbioses with arbuscular mycorrhiza fungi, #rhizobia$, and #Frankia$ bacteria Gherbi Hassen auteur aut IRD Markmann K. auteur aut IRD Svistoonoff Sergio auteur aut IRD Estevan Joan auteur aut IRD Autran Daphné auteur aut IRD Giczey G. auteur aut IRD Auguy Florence auteur aut IRD Péret Benjamin auteur aut IRD Laplaze Laurent auteur aut IRD Franche Claudine auteur aut IRD Parniske M. auteur aut IRD Bogusz Didier auteur aut IRD text journalArticle eng text/pdf born digital access Root endosymbioses vitally contribute to plant nutrition and fitness worldwide. Nitrogen-fixing root nodulation, confined to four plant orders, encompasses two distinct types of associations, the interaction of legumes (Fabales) with rhizobia bacteria and actinorhizal symbioses, where the bacterial symbionts are actinomycetes of the genus Frankia. Although several genetic components of the host-symbiont interaction have been identified in legumes, the genetic basis of actinorhiza formation is unknown. Here, we show that the receptor-like kinase gene SymRK, which is required for nodulation in legumes, is also necessary for actinorhiza formation in the tree Casuarina glauca. This indicates that both types of nodulation symbiosis share genetic components. Like several other legume genes involved in the interaction with rhizobia, SymRK is also required for the interaction with arbuscular mycorrhiza (AM) fungi. We show that SymRK is involved in AM formation in C. glauca as well and can restore both nodulation and AM symbioses in a Lotus japonicus symrk mutant. Taken together, our results demonstrate that SymRK functions as a vital component of the genetic basis for both plant-fungal and plant-bacterial endosymbioses and is conserved between legumes and actinorhiza-forming Fagales. specialized actinorhizal symbioses Casuarina glauca mycorrhizae signaling 076 084 Proceedings of the National Academy of Sciences of the United States of America 105 12 4928-4932 2008 0027-8424 https://www.documentation.ird.fr/hor/fdi:010042549 10.1073/pnas.0710618105 0027-8424 [F B010042549] https://www.documentation.ird.fr/hor/fdi:010042549 https://www.documentation.ird.fr/intranet/publi/2008/05/010042549.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2008-05-30 2017-08-23 fdi:010042549 fre