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A pH-responsive double network hydrogel for control of tomato bacterial wilt
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A pH-responsive double network hydrogel for control of tomato bacterial wilt
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Journal Article
A pH-responsive double network hydrogel for control of tomato bacterial wilt
2026
Overview
Ralstonia solanacearum
is a major plant pathogen causing bacterial wilt, whose unpredictable onset hinders timely detection and effective control. Here, we report the design, preparation and field use of a dual pH-responsive multifunctional double network (DN) hydrogel for the efficient and sustainable control of bacterial wilt. The primary network of carboxylated agarose chelates Zn
2+
and loosens under acidic conditions (pH ≤ 5) to release a pesticide (zhongshengmycin) and Zn
2+
, while the secondary L-phenylalanine (Phe)/ Zn
2+
network disassembles to provide additional bioactive components (Phe and Zn
2+
). This dual-triggered release achieves a combined antibacterial effect, enhances plant growth, and activates plant disease resistance pathways. A simple root application protects plants for up to 14 days, and field experiments demonstrate disease control for up to 30 days, significantly preserving tomato yield. Here, we present a sustainable, effective system for managing bacterial wilt and highlight the potential of smart hydrogels in crop protection.
Bacterial wilts unpredictable onset makes control difficult. Here, the authors report on a dual pH-responsive hydrogel system which releases antimicrobial agents and plant immune elicitors, L-phenylalanine and zinc, in acidic soils to enable control of bacterial wilt.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 14/34
/ 140/131
/ 147/135
/ 147/143
/ 38/23
/ 38/39
/ 38/91
/ 45/77
/ Anti-Bacterial Agents - chemistry
/ Anti-Bacterial Agents - pharmacology
/ Antiinfectives and antibacterials
/ Bacteria
/ Chelates
/ Disease Resistance - drug effects
/ Humanities and Social Sciences
/ Plant Diseases - microbiology
/ Plant Diseases - prevention & control
/ Ralstonia solanacearum - drug effects
/ Ralstonia solanacearum - pathogenicity
/ Science
/ Solanum lycopersicum - drug effects
/ Solanum lycopersicum - growth & development
/ Solanum lycopersicum - microbiology
/ Tomatoes
/ Wilt
/ Zinc
