Regulatory mechanisms of GA/DELLA action
The phytohormone GA has long been known to control growth by stimulating the degradation of nuclear growth-repressing DELLA proteins, however the mechanism allowing GA-responsive growth is only slowly emerging. An important function of DELLAs relies on their ability to establish protein-protein interaction with diverse classes of regulatory proteins and transcription factors. By doing so, DELLAs control the expression of a multitude of target genes functioning in distinct pathways. Our goal is to unravel through genetics and cell imaging the specificity, consequence and dynamics of these interactions in planta.