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Abstract

Since its first descriptions in 1995, plants MKK3-type MAP2Ks have emerged, in the shadow of the iconic and well characterized MPK3/4/6 module, as a novel actor of phosphorylation signaling in plants. Our previous work (Danquah et al 2014, Sozen et al 2020) showed that together with clade-C MAPKs and MAP3K14/17/18, MKK3 constitutes a functional module which is activated by abscisic acid (ABA) and by jasmonic acid (JA) in the drought and wounding responses respectively.

I will present here new piece of data suggesting that MKK3 modules are not only activated by stresses but also by nutritional signals such as nitrate in a NLP-dependent way. The module function is not clear in plantlets, mutants having no obvious nitrate-related phenotype, but plays a major role in the control of seed dormancy.

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Jean Colcombet est le responsable de l’équipe « stress signaling » à l’IPS2, il s’intéresse à des voies de signalisation des plantes. Son projet actuel porte sur l'identification de nouveaux modules MAPK activés tardivement en réponse aux stress.

• Page de l'équipe
• Contact FR AIB : Sandra Bensmihen (LIPME)