JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Dezheng Guo,Zhongyu Li,Yiwen Zhang,Wei Zhang,Chen Wang,Da-xia Zhang,Feng Liu,Zheng Gao,Baohua Xu,Ningxin Wang
Emerging nanopesticides are gradually gaining widespread application in agriculture due to their excellent properties, but their potential risks to pollinating insects are not fully understood. In this study, lambda-cyhalothrin nanocapsules (LC-NCs) were constructed by electrostatic self-assembly method with iron mineralization optimization, and their effects on bee gut microbial communities and host immune-related factors were investigated. Microbiome sequencing revealed that LC-NCs increase the diversity of gut microbial communities and reduce the complexity of network features, disrupting the overall structure of the microbial communities. In addition, LC-NCs also had systemic effects on the immune response of bees, including increased activity of SOD and CAT enzymes and expression of their genes, as well as downregulation of Defensin1 . Furthermore, we noticed that the immune system of the host was activated simultaneously with a rise in the abundance of beneficial bacteria in the gut. Our research emphasizes the importance of both the host and gut microbiota of holobiont in revealing the potential risks of LC-NCs to environmental indicators of honey bees, and provides references for exploring the interactions between host-microbiota systems under exogenous stress. At the same time, we hope that more research can focus on the potential impacts of nanopesticides on the ecological environment.
研究领域:
生态学
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微生物学
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昆虫学
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DOI
PubMed
高影响因子
LANGMUIR
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2025
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IF 3.9
Rong Zhao,Wei Jia,Youfa Jiang,Xiaoju Wu,Xuefeng Jiang,Saijie Song,Jun Zhang,He Shen,Jian Shen
Lambda-Cyhalothrin (LC) is a high-efficiency and broad-spectrum insecticide. However, due to its poor water dispersion stability and unstable efficacy, it has many problems in practical applications. Therefore, there is an urgent need to develop new formulations with stability, low toxicity, and environmental friendliness to overcome the drawbacks of traditional pesticide formulations. This study designed an iron-based metal–organic framework (MIL-101(Fe)) as a nanocarrier for the loading of LC and then surface modified it with polydopamine (PDA) to form the nanopesticide PDA-LC-MIL. The results showed that PDA-LC-MIL has good stability and can achieve controlled release of pesticide by adjusting the pH value. In addition, it also has a good leaf affinity and can effectively adhere on crop leaves, improving the utilization rate of pesticides. The insecticidal experimental results indicate that PDA-LC-MIL has significantly improved sustained insecticidal activity. PDA-LC-MIL also has good biocompatibility and shows no significant inhibitory effect on seed germination and seedling growth of Vigna radiata (L.) Wilczek and maize. Therefore, we firmly believe that MIL-based nanopesticides will have broad application prospects in the field of green pesticides and modern agriculture.
研究领域:
农业科学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Xueping Huang,Aiping Wang,Jian Luo,Yue Gao,Lei Guan,Peng Zhang,Feng Liu,Wei Mu,Beixing Li
Recently, size-controlled pesticide microcapsule (MC) delivery systems have played an important role in precision farming development; however, the potential environmental hazards of MCs with different particle sizes have not been fully characterized. In this study, we prepared a series of lambda-cyhalothrin (LC)-MCs with nano and micron-scale capsule sizes (average diameters of 209.4 nm, MC-N; 2.41 µm, MC-S; 4.87 µm, MC-M; and 12.41 µm, MC-L). The assessment results showed that the release and sedimentation behavior of LC-MCs in water and toxicity to zebrafish at three life stages were all particle size-dependent. As the diameter distribution of approximately 100 nm extended to the micron scale (~27 µm), the capsules released more slowly and sunk more quickly in water. In addition, micron-sized LC-MC exposure resulted in significantly less fish mortality and malformations of larvae and embryos compared with nanosized LC-MC exposure. The highest accumulation of MC-N in the gill and the severest toxicity to larvae suggested that the smaller size and stronger permeability of nanocapsules would pose unpredictable consequences for nontargeted organisms. The obvious toxicological differences of LC-MCs toward aquatic organisms implies that regulating MC production in an appropriate size range is an important prerequisite for achieving efficient but safe pesticide applications .
研究领域:
环境科学
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毒理学
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农业科学
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水生生物学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Yuli Wang,Saijie Song,Xiaohong Chu,Wenli Feng,Jie Li,Xinrong Huang,Ninglin Zhou,Jian Shen
In recent years, stimuli-responsive controlled-release pesticide formulations have drawn extensive as they show huge potential in the practical application of agriculture. Herein, a multifunctional composite nanocarrier was prepared by our group, Poly(N-isopropylacrylamide) modified graphene oxide (PNIPAm-GO), this is a temperature-responsive release pesticide formulation that can regulate pesticide release based on the temperature change. Lambda-cyhalothrin (LC) was loaded on PNIPAm-GO nanocomposite carrier via a simple physisorption process and LC@PNIPAm-GO exhibited temperature-responsive controlled release performance leading to release of LC at a specified temperature and extended its persisted release time. In addition, the LC@PNIPAm-GO controlled-release pesticide formulations showed both good water solubility and dispersion stability while its anti-UV property. Furthermore, we also assessed the biological safety of LC@PNIPAm-GO and proved that PNIPAm-GO is non-toxic. The study of this temperature-responsive pesticide formulation has promoted the development of intelligent pesticide formulations to great extent.
研究领域:
农业科学
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材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）