Overabundant moisture or insufficient moisture are deleterious to the terrestrial plants. Recently a series of waterlogged injury and drought injury resulted from the acute variation of the moisture environment. At present, more and more studies are focused on the plant adaptability to water stress and the adaptation mechanism of stress. Leersia hexandra could adapt to the drought-flood conditions,and L. hexandra was an amphibious plants,living in the water-fluctuation belt such as rivers or lakes. However,...