Translocation and Utilization Mechanisms of Leaf Intracellular Water in Karst Plants Orychophragmus violaceus (L.) O. E. Schulz and Brassica napus L.

Orychophragmus violaceus (L.) O. E. Schulz adapts to karst environments through a variety of adaptability mechanisms. However, the leaf intracellular water translocation and utilization mechanism is still unknown. This study hypothesizes that plants adapt dehydration by synergistically adjusting anatomy, cell elasticity translocation. Leaf structure, elastic modulus (Em), physiological capacitance (CP), impedance (Z), potential (ΨL), tensity (LT) chlorophyll fluorescence parameters detached leaves in Brassica napus L. were measured at each loss time (0, 1, 2, 3, 4 5 h). The uniform randomly selected from five different for species. vacuole volume resistance could be represented electrophysiological parameters, such as CP Z. results indicated timely shrinkage mesophyll cells together with increased retained maintained turgor pressure. Water within sponge parenchyma also translocated into palisade parenchyma. PSII reaction center was kept stable, photosynthetic activity clearly inhibited 3 h. Palisade B. quickly improve intercellular due strong stiffness. Gradually increasing recovery slowed down loss, which, however, not stop damage on photochemical efficiency. efficiency seriously h response can investigated help traits. direct determination plant drought using information realized present needs further research.