Protective Effect (Safener) of Melatonin on Vigna Radiata L. Seedlings in the Presence of the Fungicide Copper Oxychloride

Abstract Melatonin ( N -acetyl-5-methoxytriptamine) is a novel plant regulatory molecule currently under study. Its role as biostimulator and protector against abiotic biotic stressors, through the regulation of redox network change in expression many elements primary secondary metabolism, great interest. The possible protective effect melatonin mungbean seedlings, previously primed seed treated with fungicide copper oxychloride, was studied. growth seedlings photosynthetic pigments, leakage membranes, lipid peroxidation, antioxidant activity, phytomelatonin content Also, exogenous on endogenous hormones indoleacetic acid, gibberellins, cytokinins, abscisic salicylic jasmonic acid levels, absence presence fungicide, analyzed. improved roots aerial parts fungicide; chlorophyll carotenoid contents were protected by melatonin-fungicide co-treatments. Membrane damage due to lessened melatonin. hormonal profile (auxin, ethylene precursor, acid) leaves greatly affected treatments. In general, an increasing tolerance response has been detected, proposing natural safener plants fungicide.