A multidimensional optimization strategy of pyraclostrobin-loaded microcapsules to improve the selectivity between toxicological risk in zebrafish and efficacy in controlling rice blast
文献类型： 外文期刊
作者： Huang, Xueping 1 ; Luo, Jian 2 ; Cao, Haichao 2 ; Zhou, Fengyan 1 ; Liu, Feng 2 ; Li, Beixing 2 ; Mu, Wei 2 ; Zhang, Yong 1 ;
作者机构： 1.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230001, Anhui, Peoples R China
2.Shandong Agr Univ, Coll Plant Protect, Tai An 271018, Shandong, Peoples R China
关键词： Pyraclostrobin; Microcapsules; Ecotoxicological risk; Fungicidal activity; Environmental behavior
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2023 年 904 卷
页码：
收录情况： SCI
摘要： Developing microcapsules (MCs) delivery systems can effectively mitigate toxicological risk of highly active/ toxic pesticides; whereas the controlled release functions also limiting their practical effectiveness. Therefore, designing a precise regulating strategy to balance the toxicity and bioactivity of MCs is urgently needed. Here, we prepared a series of pyraclostrobin-loaded MCs with different wall materials, particle sizes, core density and shell compactness using interfacial polymerization. The results showed that the MCs released more slowly in water with increasing particle sizes and capsule compactness, and they sunk more quickly with the increasing particle sizes and core density. Additionally, MCs with slower release speed was always accompanied with lower acute toxicity levels to zebrafish. When the release dynamics slowed down to the threshold dose on demand for disease control, facilitating settlement of MCs can further reduce toxicity within spatial and temporal dimensions. The poor accumulation of MCs with larger particle sizes or dense shell in gills was closely related to their efficient detoxification. Importantly, seven of the MCs samples possessed superior selectivity between bio-performance in controlling rice blast and toxicological hazard to fish compared to commercial formulations. The results provide a comprehensive guidance for developing an efficient and safe pesticide delivery system.
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