Preparation method and application of nanocrystallization preparation for preventing and treating Chinese pumpkin leaf curl virus on muskmelon

By using ZnO nanocarriers to load dsRNA into nano-formulations, the problems of stability and high cost in the control of SLCCNV have been solved, achieving precise, green, and efficient virus control in melons and enhancing the disease resistance of plants.

CN121065190AActive Publication Date: 2025-12-05HAINAN UNIVERSITY SANYA NANFAN RESEARCH INSTITUTE
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Patent Information

Application Number
CN202511627543.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-07
Publication Date
2025-12-05
Estimated Expiration
2045-11-07

AI Technical Summary

Technical Problem

Existing technologies for controlling Chinese pumpkin leaf curl virus (SLCCNV) suffer from poor flexibility, high costs, serious chemical pesticide pollution, and ineffective virus control. RNAi technology also suffers from poor dsRNA stability in natural environments, which hinders its widespread application.

Method used

We developed a nanoparticle formulation that specifically targets the SLCCNV genome. By loading dsRNA onto a ZnO nanocarrier, we improved its stability and delivery efficiency. Combined with a friction inoculation method, we applied the nanoparticle pesticide to melon leaves to achieve precise targeting and silencing of the viral gene.

Benefits of technology

It achieves precise and efficient control of SLCCNV, enhances the disease resistance of melons, reduces the risk of using chemical pesticides, protects farmland ecology, adapts to existing cultivation processes, and the nanocarrier promotes the long-term slow release and plant absorption of dsRNA.

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Abstract

The invention relates to the technical field of agricultural biology, and particularly provides a preparation method and application of a nanocrystallization preparation for preventing and treating Chinese pumpkin leaf curl virus on muskmelons. Based on an RNAi interference technology, an efficient target gene region DNA-A-AV2 for inhibiting virus infection is screened, corresponding dsRNA is induced and synthesized, zinc oxide (ZnO) is used for loading and then is delivered into a plant body, the stability of the dsRNA is improved, long-acting slow release is realized, and the prevention and treatment effect of the dsRNA is enhanced. Experiments show that the nano pesticide can effectively inhibit replication and diffusion of viruses and reduce the content of the viruses. Compared with traditional chemical agents and conventional breeding, the method has irreplaceable advantages in pertinence, safety and adaptability, and meets the requirements of current agriculture for'precision 'and'green'.
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