Abstract

The present work has been undertaken not only to find out the site of action of Cd in cyanobacteria but also to know the mechanism of inhibition of photosynthetic electron transport, a process responsible for the generation of ATP and NADPH, which are essential for carbon fixation. The present study compares the sensitivities of photosystem 1(PS 1), photosystem 2 (PS 2) and redox coupling between the two photosystems of Nostoc linckia exposed to different concentrations of cadmium.

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