ИЗУЧЕНИЕ ДЕЙСТВИЯ ФИТОГОРМОНОВ НА ЛИПОКСИГЕНАЗНУЮ СИСТЕМУ И ИНТЕНСИВНОСТЬ ПЕРЕКИСНОГО ОКИСЛЕНИЯ ЛИПИДОВ В АЛЕЙРОНОВОМ СЛОЕ ЗЕРНА ПШЕНИЦЫ

Abstract

It has been shown the presence of four types of lipoxygenases during the germination of wheat seeds. Those enzyme types have been characterized according to their catalytic pH optimum, and the activation pattern during germination. It has been shown, that in aleurone cells the activity of lipoxygenases with neutral and basic pH is enhanced under the action of GA. This action of this phythohormone has been accompanied by malone dialdehyde accumulation. The action of ABA in this model system has been conversely directed towards lipoxygenase activity suppression. The important role of lipoxygenases and lipide peroxidation in generation of oxygen radicals in wheat seed aleurone cells has been suggested.