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Utilization of nanotechnology to improve the stability and insecticidal activity of spider venom protein Hv1a

文献类型： 外文期刊

作者： Zhang, Jun-ming 1 ; Luo, Yu-jie 1 ; Xu, Zhi-yi 2 ; Chen, Shan-shan 3 ; Kai, Zhen-peng 1 ;

作者机构： 1.Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China

2.Univ Oxford, Dept Chem, Oxford OX1 3QR, England

3.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, Shanghai 201403, Peoples R China

关键词： omega-HXTX-Hv1a; Nanocapsules; Biopesticides; Insect control; Chitosan nanocapsules

期刊名称：CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE （ 影响因子：5.2； 五年影响因子：6.1 ）

ISSN：

年卷期： 2025 年 12 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundWith the advancement of nanotechnology, nano biopesticides have gained considerable attention. This study presents a novel method for enhancing the stability and efficacy of the spider venom protein omega-HXTX-Hv1a, an insecticide neurotoxin. The approach involves encapsulating this protein within chitosan cross-linked sodium tripolyphosphate nanocapsules. Such encapsulation is designed to improve the adhesion of Hv1a to leaf surfaces while protecting it from degradation induced by ultraviolet light.ResultsEncapsulation of Hv1a in nanocapsules yielded significant advantages. Specifically, the insecticidal activity of nano-Hv1a was maintained at 37.19 +/- 1.23%, in stark contrast to merely 1.60 +/- 0.63% for Hv1a after 24 h under conditions conducive to photodegradation. Additionally, the encapsulated form demonstrated a prolonged retention time within insects, resulting in enhanced insecticidal efficacy compared to non-encapsulated Hv1a alone. The study further explored the effects of nano-Hv1a on insect growth patterns, revealing marked weight loss and sustained insecticidal activity beyond that observed with plain Hv1a.ConclusionThe findings underscore the potential of nano-Hv1a as an efficient and environmentally sustainable alternative for pest control strategies in agriculture. By improving both stability and effectiveness through advanced encapsulation techniques, this research proposes a viable complement to conventional pesticide practices.

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