ROLE OF MANCOZEB IN PROTEIN METABOLISM DURING GERMINATION OF PADDY CULTIVARS

Abstract

Interaction of plants to abiotic stress is complex and involve various physiological and biochemical responses. A common response of plants to fungicidal stress is the accumulation of proteins and amino acids. Amino acids and other soluble nitrogenous compounds play an essential role in plant metabolism. Hence the present work was carried out to study the effect of different concentrations of mancozeb on protein metabolism during the germination of paddy cultivars. The seeds were soaked in different concentrations of mancozeb and control was maintained. Seed treatment with mancozeb suppressed the protein content but significantly increased the protease activity, free amino acids and proline content in relation to progressive concentrations of fungicide. Thus mancozeb act as modulator and endow plants with capacity to adapt to stressful condition by biological and physiological adjustment at cellular level.