数字农科院2.0

Chemodynamic Metal-Phenolic Nanopesticide Performs In Situ Hydrogen Peroxide Self-Supply against Plant Pathogens for Food Sustainability

文献类型： 外文期刊

作者： Wang, Mingyao;Yang, Xiao;Gou, Tingting;Huang, Tao;Wang, Xiaoling;Yang, Qichang;Guo, Junling

作者机构：

关键词： self-assembly;metal-phenolic network;H2O2;plant pathogens;food sustainability

期刊名称： ACS SUSTAINABLE CHEMISTRY & ENGINEERING

ISSN： 2168-0485

年卷期： 2025 年

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： The growing reliance on pesticides for food sustainability has led to environmental pollution and food safety concerns. Herein, we present a chemodynamic strategy using a Fenton-type nanopesticide, referred to as metal-phenolic ROS-nanogenerator (nanoRSG), to enhance the control of two widely spreading plant pathogens (Pseudomonas syringae and Fusarium oxysporum). The nanoRSG is constructed by the supramolecular self-assembly of natural polyphenols and Cu2+ ions, followed by an in situ transition into phenolic-stabilized CuO2 nanoclusters with the aid of hydroxide ions in the presence of H2O2. Subsequently, the nanoRSG decomposes in the pathogenic-relevant microenvironment into Fenton-catalyzed H2O2 and Cu2+ ions, followed by the highly efficient Fenton reactions for generating center dot O-2(-) to damage pathogenic cell membranes. Regarding curative effects on tomato leaves against P. syringae and F. oxysporum, nanoRSG outperforms the commercial Kocide 3000 formulations with 94.7 and 86.9% increasing efficacy, respectively. Moreover, for curative activity on tomato roots, nanoRSG also has a better performance (87.8 and 78.9%) than Kocide 3000 (31.3 and 43.9%). Besides, the biosafety of nanoRSG is confirmed by toxicity tests in zebrafish and lettuce cultivation in a field test of hydroponics. Our findings demonstrate that the metal-phenolic nanoenabled strategy offers a promising formulation for innovating conventional pesticides and enhancing food sustainability.

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