Involvement of salicylic acid derivatives in plant water potential adjustment under conditions of insufficient moisture

Abstract

The greenhouse experiments were conducted to evaluate the effect of salicylic acid and salicylate NH4 +, K+, Mg++ on the possibility of adjusting the water status of the Zea mays, L. and Sorghum bicolor L. Moench plants in the drought conditions. It has been shown that drought causes significant changes in the stomatal conductance, intensity of transpiration, coupled with the change in the value of water potential (Ψw) and the hydrostatic pressure (Ψp) of the plants leaves of both species. Salicylic acid and salicylates NH4 +, K+, Mg++ have the property of the plant water haemostatis by increasing the degree of hydration of the tissue, reducing the water deficits, increased turgidity organs and retention of water, adjusting the hydraulic and stomatal conductivity, thus ensuring the maintenance of a higher level Ψw in both favourable and at moderate deficiency moisture conditions.