The effect of nanoparticles on the photosynthetic pigments in cadmium—zinc interactions
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Heavy metal contamination, one of the greatest global problems, not only endangers humans and animals but also negatively affects plants. New trends, the production and industrial applications of metals in nanoforms, lead to release of large amounts of nanoparticles into the environment. However, the influence of nanoparticles on living organisms is not well understood. Cadmium is a heavy metal not essential for plants, and to its phytotoxicity also contributes its chemical similarity to zinc. It has been recorded that zinc at low concentrations reduces the toxicity of cadmium, but our results with ZnO nanoparticles did not proved it. In contrast, ZnO nanoparticles significantly increased the negative effect of cadmium, which was reflected mainly in changes in the content of photosynthetic pigments.
KeywordsZnO nanoparticles Cadmium uptake Photosynthetic pigments Carex vulpina
The study was supported by the Charles University research project SVV 260 416 and the project of the Ministry of Education, Youth and Sports of the Czech Republic No. 8G15003.
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