| abstract |
The invention discloses a preparation method and application of a nanometer synergist for pesticides that negatively regulates the gene expression of detoxification enzymes of pests. The particles are anchored on the mesoporous organic silica, which greatly improves the dispersibility of cerium oxide nanoparticles, that is, a pesticide nano-synergizer that negatively regulates the gene expression of pest detoxification enzymes. The preparation method of the invention is simple, the cost is low, the reaction conditions are mild, and the use method is convenient. The insecticide nano synergist prepared by the invention has the ability to scavenge active oxygen, can significantly reduce the active oxygen level of the insect body, thereby reduce the activity of the detoxification enzyme of the insect, and down-regulate the expression level of the P450 gene of the insect. It can increase the insecticidal activity by 39%-64%, effectively overcome and delay the resistance of harmful organisms, reduce environmental pollution, and has huge economic benefits and sustainable development significance. |