INFLUENCE OF TOXIC CONCENTRATIONS OF CARBARYL ON LIPID BREAKDOWN IN GERMINATING-SEEDS OF MUSTARD BRASSICA-NIGRA

Carbaryl, a carbamate insecticide greatly inhibited the growth of germinating mustard seed at concentrations of 75,100 and 150 ppm. The insecticide caused accumulation of reserved triglycerides. The rate of beta-oxidation of fatty acids together with the activities of glyoxylate cycle enzymes, isocitrate lyase and malate synthase, decreased. The accumulation of triglycerides caused poor availability of fatty acids which in turn interfered with the rate of beta-oxidation as well as proper functioning of glycoxylate cycle.