The Effects of Copper Oxide Nanoparticles on the Photosynthesis Characteristics and Antioxidant Enzymes of Radish (Raphanus Sativus L.) Plants

Document Type : Original Research Paper

Authors

1 Assistance Professor, Department of Agriculture, Technical and Engineering, Velayat University, Iranshahr, Iran

2 Assistant professor, Department of Agriculture, Technical and Engineering, Velayat University, Iranshahr, Iran

3 Agricultural Faculty, Zabol University, Zabol. Iran

Abstract

The increase in metal nanoparticles (NPs) in the vegetable cultivation environment may cause their contamination through foliar absorption. This study investigated the effect of different concentrations of copper (Cu)-NPs (0, 50, 100, 200, 300, and 400 mgL-1) on the early growth stages of radish plants and evaluated their physiological and chemical characteristics. The study also examined the toxic effects of Cu oxide (CuO)-NPs, as a source of air stress, on plant growth, photosynthesis pigments, and antioxidant systems in radish plants. The reduction in chlorophyll a, b and carotenoid content were not significant at the 50 and 100 mgL-1 concentrations of CuO. However, plants treated with 300 mgL-1 and 400 mgL-1 demonstrated a significant decrease in chlorophyll pigments. Based on the results, the Cu content of radish leaves increased with increasing Cu concentration, so that the highest Cu content of leaves was observed at a concentration of 400 mgL-1. Thus, CuO nanostructures had a negative effect on photosynthesis pigments and antioxidant enzymes. The results revealed that the uncontrolled release of nanostructured materials into the atmosphere in an agricultural environment may reduce physiological processes.

Keywords

References

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Challenges in Nano and Micro Scale Science and Technology
Volume 14, Issue 1
March 2026
Pages 1-9

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