Chelating effect of EDTA on alkaline phosphatase activity in Parreysia Corrugata

Freshwater mussels, Parreysia corrugata were treated with 40 mg/l concentration of CaNa₂-EDTA for 8 and 15 days. Alkaline phosphatase activity in different tissues was assayed. There was significant reduction in the alkaline phosphatase activities in gills, gonads and hepatopancreas of P. corrugata exposed to CaNa₂-EDTA. Chronic Exposure to chelating agent possibly displaced the metal ions from alkaline phosphatase enzyme in the soft tissues of P. corrugata resulting into its depletion.