Speaker
Description
Mechanical stresses play a central role during the morphogenesis of multicellular structures. Not only do they generate tissue deformations but they also provide cells with signals triggering differentiation and pacing development. This is especially true in growing plant epithelia where turgidity generates tremendous stresses within cell walls. From a systematic perspective, one can wonder what kind of signalling cues, turgor-induced stresses can provide growing cells with? In this presentation, we will first see how, in the case of symmetric and closed epithelia, such stresses can be related to a specific kind of geometrical descriptors: Killing vectors fields. We will then relax the symmetry assumption and evoke how this connection can be extended to pseudo Killing fields.
