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Dernière mise à jour : Mai 2018

Menu Institutions

SPS - Saclay Plant Sciences

ANR (French Research National Agency) "Young Investigators" call for projects (JCJC call)

Last July, the ANR (French Research National Agency) released the results of the 2015 "Young Investigators" call for projects (JCJC call). The 2015 ANR action plan was organized into 9 major societal challenges and among the five laureates of the JCJC call within the "Food Security and Demographic Challenge", two were from the Laboratory of Excellence Saclay Plant Sciences. What a beautiful harvest for the SPS LabEx!

Both projects focus on plant responses to stress. As sessile organisms, plants cannot escape from adverse environmental conditions and therefore they must adapt or die. Biotic and abiotic constraints have a high impact on agriculture due to their negative effects on crop yield and productivity and this is expected to rise due to global climate changes. Moreover, there is a strong pressure to decrease the use of nitrogen-based fertilizers because they pollute the environment and become toxic for human health. Improving crop tolerance to stress will contribute to meet increasing human demands and environmental challenges.

Thus, deciphering the molecular mechanisms of plant stress perception and adaptation is essential and that is what our two young researchers are hoping to achieve. Allow us to introduce to you our JCJC laureates and their projects.

CASSIS

Calcium signaling in plant adaptation to environmental stresses

Marie Boudsocq  (CNRS)
Team « Stress signalling» (Jean Colcombet)
Institut de Sciences des Plantes Paris-Saclay (IPS2)

Marie Boudsocq

Plants have developed robust and efficient signaling networks to quickly sense stress stimuli and induce the adaptive cellular responses required for their survival. Protein kinases, in particular, are key-players of plant stress signaling. The mitogen-activated protein kinases (MAPKs) are the most studied and the best known kinases in plants, but there is another kind of kinases, the calcium-dependent protein kinases (CDPKs), which are also emerging as central regulators of both biotic and abiotic stress responses. The CASSIS project aims to understand and evaluate the roles of CDPKs in abiotic stress signaling in the model plant Arabidopsis thaliana. This multi-approach study will focus on two key closely related Arabidopsis isoforms, CPK5 and CPK6, which function at the crossroad of biotic and abiotic stress signaling.

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STRESSNET

Next generation genetics to identify regulatory networks involved in the response to abiotic stresses (simple and combined) in Arabidopsis
José Jiménez-Gómez

José Jiménez-Gómez  (INRA)
Team «Variation and Abiotic Stress Tolerance » (Olivier Loudet)
Institut Jean-Pierre Bourgin (IJPB)

The combination of water and nitrogen deficit has disastrous outcomes for plants. The STRESSNET project aims to dissect the molecular mechanisms underlying plant responses to water deficit, nitrogen deficit and to both stresses combined. A robotic facility that applies stresses with high precision and reproducibility will produce datasets in multiple Arabidopsis accessions and their hybrids. Several approaches will be integrated to reconstruct the molecular networks underlying plant responses to single and combined stresses in order to identify the molecules that have been selected through evolution to modify stress responses without compromising fitness. Unveiling the identity of these molecules, even in an undomesticated species, is of great interest for agriculture, where the goal is to obtain stress resistant lines without affecting production.

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