The ins and outs of meristem function and shape
Growth extent and direction determine cell and whole-organ architecture. How they are spatio-temporally coordinated across distinct cell types is one of the questions tackled in our lab. Using a variety of approaches ranging from developmental genetics to precise single-cell tools that quantify growth parameters in 4D, we study the role of hormonal signaling, tissue identity and mechanical constraints that together dictate the developmental output. We focus on the Arabidopsis root as a model organ and on the critical brassinosteroid signaling pathway, as an entry point to elucidate developmental processes and their interaction with the environment. This talk will present our current understanding regarding growth directionality at both the cell and meristem levels, coordination between meristematic cells as well as the function of the meristem.