Involvement of water in coordination and integration of plants ́ functions in drought conditions

Abstract

It was established that water in unfavorable conditions is one of the main factors of integration and coordination of physiological processes at the cellular, organ and organism level. The water stress caused disturbances in the functional interrelationships between organs as a result of differences in the degree of dehydration, the occurrence of reactive oxygen species and the antioxidant enzyme activities, especially in roots and inflorescences. The reason of the functional imbalance in drought conditions was the reduction of water and phytohormones transport, disturbed water homeostasis, and decreased enzymatic antioxidant protection. It was confirmed the hypothesis that water is the factor involved in regulating the functional activity of the plant, helps maintain coordinated relations between organs and performs, along with other factors, function integration at the organism level.