TRR 175 The Green Hub - Central Coordinator of Acclimation in Plants

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Mechanisms and components of STN7- and GUN1-dependent retrograde signalling

Our previous work has shown that the thylakoid protein kinase STN7 integrates short- and long-term acclimation to altered light conditions. Another protein with integrative function is the chloroplast pro-tein GUN1 that acts downstream of three retrograde signalling pathways and for which we could show that it interacts with different chloroplast proteins, one of them involved in translation and heat stress response. In this project, we will characterise the molecular mechanisms of how STN7 and GUN1 inte-grate chloroplast processes and signalling events, and identify novel components of the STN7- and GUN1-dependent signalling pathways.