Blue Light Enhances Cadmium Tolerance of the Aquatic Macrophyte Potamogeton crispus

Cadmium (Cd) is highly toxic and widely distributed in aquatic systems due to its high solubility mobility water, which can severely inhibit the survival of macrophytes. The phytotoxicity Cd depends on environmental factors; however, it remains unclear whether how light quality affects toxicity In this study, we investigated effects macrophytes Potamogeton crispus under different qualities (white, blue, red light). We evaluated morphological photo-physiological traits, as well cellular antioxidant defense system. Our findings indicate that P. stress showed notable damage leaf morphology, decreased photosynthetic efficiency, inhibited HCO3− uptake, reduced enzyme activities, oxidative indicated by MDA accumulation superoxide (O2−) overproduction. However, compared with white or stress, blue structural caused while increasing pigment synthesis ascorbate peroxidase (APX) activity. conclusion, changes induced crispus’s photosynthesis system strengthen tolerance Cd. Further research signal transmission relation Cd-exposed plants still needed.