%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Champion, Antony
%A Lucas, Mikaël
%A Tromas, Alexandre
%A Vaissayre, Virginie
%A Crabos, Amandine
%A Diedhiou, I.
%A Prodjinoto, H.
%A Moukouanga, Daniel
%A Pirolles, Elodie
%A Cissoko, M.
%A Bonneau, Jocelyne
%A Gherbi, Hassen
%A Franche, Claudine
%A Hocher, Valérie
%A Svistoonoff, Sergio
%A Laplaze, Laurent
%T Inhibition of auxin signaling in Frankia species-infected cells in Casuarina glauca nodules leads to increased nodulation
%D 2015
%L fdi:010064640
%G ENG
%J Plant Physiology
%@ 0032-0889
%M ISI:000354413900041
%N 3
%P 1149-1157
%R 10.1104/pp.114.255307
%U https://www.documentation.ird.fr/hor/fdi:010064640
%> https://www.documentation.ird.fr/intranet/publi/2015/06/010064640.pdf
%V 167
%W Horizon (IRD)
%X Actinorhizal symbioses are mutualistic interactions between plants and the soil bacteria Frankia spp. that lead to the formation of nitrogen-fixing root nodules. The plant hormone auxin has been suggested to play a role in the mechanisms that control the establishment of this symbiosis in the actinorhizal tree Casuarina glauca. Here, we analyzed the role of auxin signaling in Frankia spp.-infected cells. Using a dominant-negative version of an endogenous auxin-signaling regulator, INDOLE-3-ACETIC ACID7, we established that inhibition of auxin signaling in these cells led to increased nodulation and, as a consequence, to higher nitrogen fixation per plant even if nitrogen fixation per nodule mass was similar to that in the wild type. Our results suggest that auxin signaling in Frankia spp.-infected cells is involved in the long-distance regulation of nodulation in actinorhizal symbioses.
%$ 084 ; 076