Lemon-Fruit-Based Green Synthesis of Zinc Oxide Nanoparticles and Titanium Dioxide Nanoparticles against Soft Rot Bacterial Pathogen Dickeya dadantii
文献类型： 外文期刊
作者： Hossain, Afsana 1 ; Abdallah, Yasmine 1 ; Ali, Md Arshad 1 ; Masum, Md Mahidul Islam 1 ; Li, Bin 1 ; Sun, Guochang; 1 ;
作者机构： 1.Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol,Zhejiang Prov Key Lab Bio, Minist Agr,Key Lab Mol Biol Crop Pathogens & Inse, Hangzhou 310058, Peoples R China
2.Sylhet Agr Univ, Dept Plant Pathol & Seed Sci, Sylhet 3100, Bangladesh
3.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Qual & Safety Agroprod, Hangzhou 310021, Peoples R China
4.Gen Stn Plant Protect & Quarantine Zhejiang Prov, Hangzhou 310020, Peoples R China
5.Bangabandhu Sheikh Mujibur Rahman Agr Univ, Dept Plant Pathol, Gazipur, Bangladesh
关键词： plant-based green synthesis; nanomaterials; soft rot; Citrus limon; Ipomoea batatas
期刊名称：BIOMOLECULES （ 影响因子：4.879； 五年影响因子：5.362 ）
ISSN：
年卷期： 2019 年 9 卷 12 期
页码：
收录情况： SCI
摘要： Edible plant fruits are safe raw materials free of toxicants and rich in biomolecules for reducing metal ions and stabilizing nanoparticles. Zinc oxide nanoparticles (ZnONPs) and titanium dioxide nanoparticles (TiO(2)NPs) are the most produced consumer nanomaterials and have known antibacterial activities but have rarely been used against phytopathogenic bacteria. Here, we synthesized ZnONPs and TiO(2)NPs simply by mixing ZnO or TiO2 solution with a lemon fruit extract at room temperature and showed their antibacterial activities against Dickeya dadantii, which causes sweet potato stem and root rot disease occurring in major sweet potato planting areas in China. Ultraviolet-visible spectrometry and energy dispersive spectroscopy determined their physiochemical characteristics. Transmission electron microscopy, scanning electron microscopy, and X-ray diffraction spectroscopy revealed the nanoscale size and polymorphic crystalline structures of the ZnONPs and TiO(2)NPs. Fourier-transform infrared spectroscopy revealed their surface stabilization groups from the lemon fruit extract. In contrast to ZnO and TiO2, which had no antibacterial activity against D. dadantii, ZnONPs and TiO(2)NPs showed inhibitions on D. dadantii growth, swimming motility, biofilm formation, and maceration of sweet potato tuber slices. ZnONPs and TiO(2)NPs showed similar extents of antibacterial activities, which increased with the increase of nanoparticle concentrations, and inhibited about 60% of D. dadantii activities at the concentration of 50 mu g.mL(-1). The green synthetic ZnONPs and TiO(2)NPs can be used to control the sweet potato soft rot disease by control of pathogen contamination of seed tubers.
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