Fabre S. auteur aut IRD Gully Djamel auteur aut IRD Poitout A. auteur aut IRD Patrel Delphine auteur aut IRD Arrighi Jean-François auteur aut IRD Giraud Eric auteur aut IRD Czernic P. auteur aut IRD Cartieaux Fabienne auteur aut IRD text journalArticle eng text/pdf born digital access Nitrogen fixation in the legume-rhizobium symbiosis is a crucial area of research for more sustainable agriculture. Our knowledge of the plant cascade in response to the perception of bacterial Nod factors has increased in recent years. However, the discovery that Nod factors are not involved in the Aeschynomene-Bradyrhizobium spp. interaction suggests that alternative molecular dialogues may exist in the legume family. We evaluated the conservation of the signaling pathway common to other endosymbioses using three candidate genes: Ca2+/Calmodulin-Dependent Kinase (CCaMK), which plays a central role in cross signaling between nodule organogenesis and infection processes; and Symbiosis Receptor Kinase (SYMRK) and Histidine Kinase1 (HK1), which act upstream and downstream of CCaMK, respectively. We showed that CCaMK, SYMRK, and HK1 are required for efficient nodulation in Aeschynomene evenia. Our results demonstrate that CCaMK and SYMRK are recruited in Nod factor-independent symbiosis and, hence, may be conserved in all vascular plant endosymbioses described so far. specialized 076 084 169 4 2654-2664 2015 0032-0889 https://www.documentation.ird.fr/hor/fdi:010066135 10.1104/pp.15.01134 0032-0889 [F B010066135] https://www.documentation.ird.fr/hor/fdi:010066135 https://www.documentation.ird.fr/intranet/publi/2016/02/010066135.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-02-26 2019-01-03 fdi:010066135 fre