Abstract
Water stress, is experienced by plants as soon as the water demand exceeds the water uptake capacity, drop two biophysical parameters of plants—which are extracellular ΨΠ (osmotic potential) and intracellular ΨP (turgor potential). Deciphering their transduction mechanism clearly is a huge challenge, and we are committed to understanding their respective effects from a molecular and biophysical perspective.We have performed preliminary experiments where Arabidopsis plants grown in hydroponic cultures were treated with varying concentrations of solutes. With the help of a cell pressure probe, we found the optimal time of transcriptome detection. Then, we found some candidates by analyzing the correlation between gene expression and P and/or Π. Moreover, we have screened some optimal genes by analyzing the temporal variation of their expression and expected model. Next step, we try to develop the biosensor of P and/or Π, identify their roles in regulatory network of water stress and test whether aquaporin participate in this network.