Reducing pesticide use:Synthesis and application of ROS-SPC as an efficient nanocarrier and scavenger of reactive oxygen species in plants  

作　　者：Tian-shi Jiang Su-zhen Qi Chang-heng Zhu Han-qing Zhao Liu-sheng Duan 

机构地区：[1]Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs,Beijing University of Agriculture,Beijing,102206,China [2]State Key Laboratory of Resource Insects,Institute of Apicultural Research,Chinese Academy of Agricultural Sciences,Beijing,100093,China

出　　处：《Advanced Agrochem》2024年第2期162-170,共9页现代农业化学（英文）

基　　金：support by the Natural Science Foundation of Beijing(No.2232004);National Key Research and Development Program of China(No.2023YFD1700600)。

摘　　要：There is an increasing need to reduce the use of pesticides to reduce their potential threat to food/environmental safety.At the same time,an increase in reactive oxygen species(ROS)induced by abiotic stresses in plants can lead to an increase in ROS in the plant and affect yield.In this paper,ROS-SPC was synthesised by two reactions and used as an efficient pesticide nanocarrier/adjuvant and scavenger of reactive oxygen species(ROS)in plants.By hydrophobic interaction,ROS-SPC spontaneously conjugated tofluazinam with a pesticide loading capacity(PLC)of 15.1%.Afterfluazinam was conjugated to ROS-SPC,the particle size offluazinam was reduced from 64.70 nm reduced to 19.82 nm,and the contact angle of pesticide droplets on plant leaves was significantly reduced from 59.44°to 26.76°.ROS-SPC as a carrier was tested to inhibit phytopathogenic fungi by 200%more than conventional delivery methods.In addition,we also learned that ROS-SPC with endocytosis capability can indeed remove reactive oxygen species from plants.Tests using HUVEC cells showed that ROS-SPC has low cytotoxicity within a reasonable range of applications,and ROS-SPC was tested to have low toxicity to pollinating bees.

关 键 词：Star polymers Nanopesticide NANOCARRIER FUNGICIDE 

分 类 号：O62[理学—有机化学]