@article{fdi:010075178, title = {{S}ignalling in actinorhizal root nodule symbioses}, author = {{H}ocher, {V}al{\'e}rie and {N}gom, {M}. and {C}arr{\'e}-{M}louka, {A}. and {T}isseyre, {P}ierre and {G}herbi, {H}assen and {S}vistoonoff, {S}ergio}, editor = {}, language = {{ENG}}, abstract = {{P}lants able to establish a nitrogen-fixing root nodule symbiosis with the actinobacterium {F}rankia are called actinorhizal. {T}hese interactions lead to the formation of new root organs, called actinorhizal nodules, where the bacteria are hosted intracellularly and fix atmospheric nitrogen thus providing the plant with an almost unlimited source of nitrogen for its nutrition. {L}ike other symbiotic interactions, actinorhizal nodulation involves elaborate signalling between both partners of the symbiosis, leading to specific recognition between the plant and its compatible microbial partner, its accommodation inside plant cells and the development of functional root nodules. {A}ctinorhizal nodulation shares many features with rhizobial nodulation but our knowledge on the molecular mechanisms involved in actinorhizal nodulation remains very scarce. {H}owever recent technical achievements for several actinorhizal species are allowing major discoveries in this field. {I}n this review, we provide an outline on signalling molecules involved at different stages of actinorhizal nodule formation and the corresponding signalling pathways and gene networks.}, keywords = {{A}ctinobacteria ; {B}iological nitrogen fixation ; {S}ymbiosis ; {N}odulation factors ; {N}odulation ; {A}ctinorhizal species ; {M}icrobe-host signalling}, booktitle = {}, journal = {{A}ntonie {V}an {L}eeuwenhoek = {I}nternational {J}ournal of {G}eneral and {M}olecular {M}icrobiology}, volume = {112}, numero = {1}, pages = {23--29}, ISSN = {0003-6072}, year = {2019}, DOI = {10.1007/s10482-018-1182-x}, URL = {https://www.documentation.ird.fr/hor/fdi:010075178}, }