[Phytotoxicity of copper oxide nanoparticles to metabolic activity in the roots of rice].

To study the toxicity of copper oxide nanoparticles (CuO NPs) on plant growth, the physiological and biochemical activities of rice (Oryza sativa L. ) seedlings were detected under different kinds of treatments (CuO NPs suspension, CuO BPs suspension and CuSO4 .5H2O solution), using distilled water (d H20) culture as contrast.