Impact of Lead and Cadmium on Enzyme of Citric Acid Cycle in Germinating Pea Seeds

The present investigations were conducted to ascertain the influence of Pb2+ and Cd2+ both individually and in combination on selected enzymes of tricarboxylic acid (TCA) cycle. All the enzymes of TCA cycle examined (α-ketoglutarate dehydrogenase, isocitrate dehydrogenase, succinate dehydrogenase, malate dehydrogenase) were affected deleteriously by Pb2+ as well as Cd2+ and these metals in combination gave more or less an additive effect.