Effects of the heavy metal cadmium on photosynthetic activity and the xanthophyll cycle in Phaeodact

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Cadmium(Cd)is one of the most common and widespread heavy metals in the environment.Cd has adverse effects on photosynthesis that are countered by photosystemⅠ(PSⅠ)and photosystemⅡ(PSⅡ);however,the protective responses of these photosystems to heavy metal
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