中空介孔二氧化硅纳米粒子负载的鱼藤酮纳米颗粒在黄瓜植株中的吸收和传导特性  

Uptake and translocation properties of rotenone nanopesticide mediated by hollow mesoporous silica nanoparticles in cucumber plant

作　　者：郭亚军 沈殿晶 赵明[2] 范添乐 王智超 陈小军[2] GUO Yajun;SHEN Dianjing;ZHAO Ming;FAN Tianle;WANG Zhichao;CHEN Xiaojun(Agricultural Technology Comprehensive Service Center of Jiangdu District Yangzhou City,Yangzhou 225200,China;School of Horticulture and Plant Protection/Joint International Research Laboratory of Agriculture&Agri-Product Safety,Yangzhou University,Yangzhou,225009,China)

机构地区：[1]扬州市江都区农业技术综合服务中心,江苏扬州225200 [2]扬州大学园艺与植物保护学院/农业与农产品安全国际合作联合实验室,江苏扬州225009

出　　处：《华南农业大学学报》2022年第1期85-93,共9页Journal of South China Agricultural University

基　　金：江苏省重点研发计划(BE2019340);扬州市市校合作项目(YZ 2020178)。

摘　　要：【目的】以纳米载体作为农药载体,提高农药利用率。【方法】采用自模板合成法,在合成实心介孔二氧化硅纳米粒子(Mesoporous silica nanoparticles,MSNs)的基础上,以水为刻蚀剂制备中空介孔二氧化硅纳米粒子(Hollow mesoporous silica nanoparticles,HMSNs)。通过溶剂挥发法将植物源农药鱼藤酮(Rot)负载到HMSNs的孔道中,制备得到Rot@HMSNs。测定Rot@HMSNs的缓释性能和杀虫活性。HPLC检测Rot@HMSNs中鱼藤酮在黄瓜植株中的系统分布。【结果】所制备的HMSNs粒径约250 nm,比表面积达999.4 m^(2)/g。Rot@HMSNs粒径均一,载药率达46.7%,具有良好的释放特性,释放模型符合Ritger-Peppas释放模型。HMSNs显著提高了鱼藤酮在黄瓜植株中的吸收和传导能力。【结论】通过纳米载体HMSNs可以提高鱼藤酮的利用率,此研究对于减少农药使用量、降低环境污染具有重要意义。【Objective】Nanocarrier was used as pesticide carrier to improve the utilization ratio of pesticide.【Method】Hollow mesoporous silica nanoparticles(HMSNs)were synthesized by self-template method using water as etchant on the basis of solid mesoporous silica nanoparticles(MSNs).Botanical pesticide rotenone was loaded into HMSNs(Rot@HMSNs)by solvent evaporation method.The sustained-release property and insecticidal activity of Rot@HMSNs were determined.Distribution of rotenone in Rot@HMSNs of cucumber was obtained by HPLC.【Result】The particle size of HMSNs was about 250 nm and the specific surface area was 999.4 m^(2)/g.The prepared Rot@HMSNs had uniform particle size and a considerable loading rate of rotenone(46.7%).The Rot@HMSNs had good releasing performance and the release model was in accordance with the Ritger-Peppas model.HMSNs significantly improved the uptake and translocation abilities of rotenone in cucumber plants.【Conclusion】The utilization rate of rotenone can be improved by nanocarrier HMSNs.The study is of great significance for reducing pesticide use and environmental pollution.

关 键 词：中空介孔二氧化硅 鱼藤酮 纳米颗粒 缓释性能 吸收传导能力 

分 类 号：S482[农业科学—农药学]