Our group is interested in several topics about the biochemistry, the molecular biology and the genomics of the yeast Saccharomyces cerevisiae, specifically those that are related to cell signalling trough processes of phospho-dephosphorylation. For this purpose, we investigate issues like the ion homeostasis, the response to various stresses or the cell cycle regulation. The main objective is to obtain an overview on the yeast response to perturbations of its environment, so that we can both understand in deep the biology of this organism and to guide us towards new biotechnological applications.