Optimizing the size of mesoporous silica nano-delivery system enhances the absorption, transport, and retention of pesticides in tea plants

• 全文链接

优化介孔二氧化硅纳米递送系统的尺寸可增强农药在茶树中的吸收、运输和保留

关键词：

来源：

Industrial Crops and Products 期刊

全文链接：

//agri.nais.net.cn/topic/downloadFile/23d323a9-031b-4fba-a7db-bde75f1062bd

来源地址：

https://www.sciencedirect.com/science/article/pii/S0926669025003358

资源所属：

茶学研究专题

类型：

学术文献

语种：

英语

原文发布日期：

2025-02-28

摘要：

We synthesized mesoporous silica nano-delivery systems with mean diameters of 27, 54, and 114 nm to encapsulate acetamiprid and investigated their uptake, translocation, and distribution following foliar application in tea plants. Among these, the 54 nm nano-delivery system exhibited superior absorption and transport capacity, allowing it to enter cells, whereas nano-delivery systems of other sizes demonstrated limited cellular uptake. As a result, only the 54 nm nano-delivery system effectively penetrated vascular tissue via the symplastic pathway, reaching the stem and predominantly accumulating in the xylem. Interestingly, nano-delivery systems within the vascular tissue retained the capacity to release acetamiprid, potentially facilitating continuous absorption and transport of acetamiprid within the tea plants. This feature is crucial for combating piercing-sucking pests that feed on plant sap by piercing the host plant's vascular tissue. These findings pave the way for designing nano-delivery systems with optimal particle sizes to enhance pesticide absorption, transportation, and persistence, thus achieving long-term control of piercing-sucking pests and increasing yields of tea plants.