数字农科院2.0

A Smart Pesticide-Controlled Release Platform with Dual Stimuli-Responsive Functions for Enhanced Treatment of Plant Black Shank

文献类型： 外文期刊

作者： Xie, Yi;Zhang, Chengsheng;Ma, Siqi;Zou, Ping;Ma, Junqing;Chen, Qianru;Zhang, Yuanyang;Ren, Tingting;Yang, Xia;Zhu, Haiguang;Yuan, Xun;Li, Yiqiang;Jing, Changliang

作者机构：

关键词： controllable pesticide release;plant disease;anti-fungal;P. nicotianae inhibition;fungicidal mechanism

期刊名称： ACS APPLIED MATERIALS & INTERFACES

ISSN： 1944-8244

年卷期： 2024 年 16 卷 12 期

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Realizing controllable input of botanical pesticides is conducive to improving pesticide utilization, reducing pesticide residues, and avoiding environmental pollution but is extremely challenging. Herein, we constructed a smart pesticide-controlled release platform (namely, SCRP) for enhanced treatment of tobacco black shank based on encapsulating honokiol (HON) with mesoporous hollow structured silica nanospheres covered with pectin and chitosan oligosaccharide (COS). The SCRP has a loading capacity of 12.64% for HON and could effectively protect HON from photolysis. Owing to the pH- and pectinase-sensitive property of the pectin, the SCRP could smartly release HON in response to a low pH or a rich pectinase environment in the black shank-affected area. Consequently, the SCRP effectively inhibits the infection of P. nicotianae on tobacco with a controlled rate for tobacco black shank of up to 87.50%, which is mainly due to the SCRP's capability in accumulating ROS, changing cell membrane permeability, and affecting energy metabolism. In addition, SCRP is biocompatible, and the COS layer enables SCRP to show a significant growth-promoting effect on tobacco. These results indicate that the development of a stimuli-responsive controlled pesticide release system for plant disease control is of great potential and value for practical agriculture production.

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