We aim to identify the list of factors which control how macroalgae build their body.
Brown algae display diverse body architectures with a wide range of morphological complexities involving specialised organs (stipe, holdfast, pneumatocysts), vascular tissue (kelp) and complex reproductive organs (receptacle).
Their vegetative cells are non-motile, photosynthetic and surrounded by a cell wall. Because of their marine environment, they experience high osmotic pressure variations, dehydration and strong mechanical forces.
Therefore, in addition to the endogenous factors (e.g. macroalgal gene products, cell-cell communication), the exogenous factors play important roles in macroalgal development and morphogenesis.
To identify these factors, we use a large pannel of cellular, molecular and genetic approaches and techniques (laser capture microdissection, genome-wide transcriptomics, mutant analysis, atomic force microscopy, cell immunolocalisation, electron microscopy).