Climate change is dramatically impacting crop growth and productivity. To improve thermotolerance in crops, it is crucial to understand the molecular and biochemical basis of how plants sense and respond to temperature changes. In this context, it is known that jasmonate (JA) signaling plays an important role in low and high temperature responses, that enhanced JA signaling contributes to cold/heat tolerance, and that JA is involved in (temperature-regulated) stomatal movement. Our (un)published data reveal that heat induces dephosphorylation of the wheat TaCOI1-1D protein, a jasmonate receptor. Furthermore, we already demonstrated that this phosphorylation plays a role in thermotolerance and based on our preliminary data we propose that this phosphorylation affects TaCOI1-1D protein abundance. The project will combine plant phosphorylation-mediated signaling within the research group of Prof. Ive De Smet, JA-related expertise of Prof. Alain Goossens and wheat abiotic stress expertise from Prof. Mingming Xin to address the following key questions: (1) Which (heat-modulated) E3 ligase controls COI1 abundance?, (2) Which (heat-modulated) kinase regulates COI1 phosphorylation?, and (3) How does temperature-sensitive COI1 phosphorylation and abundance modulate thermotolerance in wheat? Taken togeter, our results will contribute to improving tolerance of crops to extreme temperatures and temperature fluctuation to assure future food security.