Dual stimuli-responsive fungicide carrier based on hollow mesoporous silica/hydroxypropyl cellulose hybrid nanoparticles
文献类型： 外文期刊
作者： Gao, Yunhao 1 ; Liu, Yu 1 ; Qin, Xueyin 1 ; Guo, Ziping 3 ; Li, Donglin 1 ; Li, Chenggang 4 ; Wan, Hu 1 ; Zhu, Fuxing 1 ; Li 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Insect Resources Utilizat & Sustainable Pes, Wuhan 430070, Peoples R China
2.China Agr Univ, Coll Plant Protect, Beijing 100193, Peoples R China
3.Hubei Prov Plant Protect Gen Stn, Wuhan 430070, Peoples R China
4.Hunan Acad Agr Sci, Hunan Plant Protect Inst, Changsha 410125, Peoples R China
关键词： Controlled release; Dual stimuli-responsive; Pyraclostrobin; Hollow mesoporous silica; Hydroxypropyl cellulose
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）
ISSN： 0304-3894
年卷期： 2021 年 414 卷
页码：
收录情况： SCI
摘要： The controlled release of pesticides based on nanoparticle platforms has emerged as a new technology for increasing the efficiency of pesticides and for reducing environmental pollution because of their size-dependent and target-modifying properties. In the present study, pH/cellulase dual stimuli-responsive controlled-release formulations (PYR-HMS-HPC) were designed by grafting hydroxypropyl cellulose onto pyraclostrobin-loaded hollow mesoporous silica nanoparticles via an ester linkage. The PYR-HMS-HPC formulations were characterized by Fourier transform infrared spectroscopy, thermogravimetric analyzer, transmission electron microscope and scanning electron microscope. The results demonstrated that PYR-HMS-HPC with a loading capacity of 12.1 wt% showed excellent pyraclostrobin release behaviors in response to acidic environments and the introduction of cellulase, could effectively prevented pyraclostrobin from photolysis. Compared with commercial pyraclostrobin formulations, the PYR-HMS-HPC formulations showed much stronger and statistically significant fungicidal activity against Magnaporthe oryzae from 7 to 21 days. Furthermore, the Allium cepa chromosome aberration assay demonstrated that the PYR-HMS-HPC formulations reduced the genotoxicity of pyraclostrobin. These pH/ cellulase dual stimuli-responsive controlled-release formulations are of great interest for sustainable on-demand crop disease protection.
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