FITOHORMONII – MODULATORI AI ACTIVITĂŢII ENZIMELOR ANTIOXIDANTE LA PLANTE ÎN CONDIŢII DE SECETĂ

Anastasia ŞTEFÎRŢĂ, Lilia BRÎNZĂ, Mihail MELENCIUC, Nicolai ALUCHI, Svetlana BUCEACEAIA Institutul de Genetică, Fiziologie şi Protecţie a Plantelor al AŞM

Abstract

THE PHYTOHORMONES – MODULATORS OF PLANTS ANTIOXIDANT ENZYMES ACTIVITY IN DROUGHT CONDITIONS

In experiments conducted under different conditions of moisture has been demonstrated, that dehydration plant Ph. vulgaris L. caused by drought, is associated with intensification of reactive oxygen species formation (ROS) and oxidative cell destruction. The use of exogenous phytohormones (IAA, CK, GA3) minimizes the production of ROS and of peroxide oxidation lipids.The optimization of antioxidant protection by the exogenous phytohormones is a consequence of improving the water status and enhancing of the antioxidant enzymes activity. Keywords: drought, plants, reactive oxygen species, phytohormones.