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Immobilization of Bacillus thuringiensis Cry1Ac in metal-organic frameworks through biomimetic mineralization for sustainable pest management

文献类型： 外文期刊

作者： Sui, Li 1 ; Dai, Chunyan 3 ; Zheng, Wenjing 4 ; Zhao, Yu 1 ; Li, Quanshun 2 ; Liang, Xiao 2 ; Li, Qiyun 1 ; Zhang, Zhengkun 1 ;

作者机构： 1.Jilin Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Crops Northeast, Jilin Key Lab Agr Microbiol,Minist Agr & Rural Are, Gongzhuling 136100, Peoples R China

2.Jilin Univ, Sch Life Sci, Key Lab Mol Enzymol & Engn, Minist Educ, Changchun 130012, Peoples R China

3.First Hosp Jilin Univ, Inst Virol & AIDS Res, Changchun 130000, Peoples R China

4.Jilin Agr Univ, Coll Plant Protect, Changchun 130118, Peoples R China

5.Jilin Agr Sci & Technol Univ, Jilin 132109, Peoples R China

关键词： Nanopesticides; Cry1Ac; Metal-organic frameworks; Pest management; Stability; Durability

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：7.7； 五年影响因子：7.7 ）

ISSN： 0141-8130

年卷期： 2024 年 274 卷

页码：

收录情况： SCI

摘要： Traditional chemical pesticide dosage forms and crude application methods have resulted in low pesticide utilization, increased environmental pollution, and the development of resistance. Compared to traditional pesticides, nanopesticides enhance the efficiency of pesticide utilization and reduce the quantity required, thereby decreasing environmental pollution. Herein, Cry1Ac insecticidal crystal protein from Bacillus thuringiensis Subsp. Kurstaki HD-73 was encapsulated in a metal-organic framework (zeolite imidazolate framework-8, ZIF-8) through biomimetic mineralization to obtain Cry1Ac@ZIF-8 nanopesticides. The Cry1Ac@ZIF-8 nanopesticides exhibited a dodecahedral porous structure, and the introduction of Cry1Ac did not affect the intrinsic crystal structure of ZIF-8. The indoor toxicity analysis revealed that the toxicity of Cry1Ac towards Ostrinia furnacalis (Guenee), Helicoverpa armigera Hubner, and Spodoptera litura Fabricius was not affected by ZIF-8 encapsulation. Surprisingly, Cry1Ac@ZIF-8 still exhibited excellent pest management efficacy even after exposure to heat, UV irradiation, and long-term storage. More importantly, the encapsulation of ZIF-8 significantly enhanced the internal absorption performance of Cry1Ac in maize leaves and extended its persistence period. Thus, ZIF-8 could potentially serve as a promising carrier for the preparation of nanopesticides with enhanced applicability, stability, and persistence period, providing a powerful strategy to improve the application of Cry1Ac in future agricultural pest management.

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