Green-Synthesization of Silver Nanoparticles Using Endophytic Bacteria Isolated from Garlic and Its Antifungal Activity against Wheat Fusarium Head Blight Pathogen Fusarium graminearum
文献类型： 外文期刊
作者： Ibrahim, Ezzeldin 1 ; Zhang, Muchen 1 ; Zhang, Yang 1 ; Hossain, Afsana 1 ; Qiu, Wen 1 ; Chen, Yun 1 ; Wang, Yanli 5 ; Wu 1 ;
作者机构： 1.Zhejiang Univ, Inst Biotechnol, State Key Lab Rice Biol, Hangzhou 310058, Peoples R China
2.Zhejiang Univ, Inst Biotechnol, Minist Agr, Key Lab Mol Biol Crop Pathogens & Insects, Hangzhou 310058, Peoples R China
3.Agr Res Ctr, Plant Pathol Res Inst, Dept Vegetable Dis Res, Giza 12916, Egypt
4.Sylhet Agr Univ, Dept Plant Pathol & Seed Sci, Sylhet 3100, Bangladesh
5.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Qual & Safety Agroprod, Hangzhou 310021, Peoples R China
6.Anhui Acad Agr Sci, Rice Res Inst, Hefei 230001, Peoples R China
关键词： F. graminearum; nanoparticles; SEM; FTIR; antifungal activity; mycotoxins
期刊名称：NANOMATERIALS （ 影响因子：5.076； 五年影响因子：5.346 ）
ISSN：
年卷期： 2020 年 10 卷 2 期
页码：
收录情况： SCI
摘要： Nanoparticles are expected to play a vital role in the management of future plant diseases, and they are expected to provide an environmentally friendly alternative to traditional synthetic fungicides. In the present study, silver nanoparticles (AgNPs) were green synthesized through the mediation by using the endophytic bacterium Pseudomonas poae strain CO, which was isolated from garlic plants (Allium sativum). Following a confirmation analysis that used UV-Vis, we examined the in vitro antifungal activity of the biosynthesized AgNPs with the size of 19.8-44.9 nm, which showed strong inhibition in the mycelium growth, spore germination, the length of the germ tubes, and the mycotoxin production of the wheat Fusarium head blight pathogen Fusarium graminearum. Furthermore, the microscopic examination showed that the morphological of mycelia had deformities and collapsed when treated with AgNPs, causing DNA and proteins to leak outside cells. The biosynthesized AgNPs with strong antifungal activity were further characterized based on analyses of X-ray diffraction, transmission electron microscopy, scanning electron microscopy, EDS profiles, and Fourier transform infrared spectroscopy. Overall, the results from this study clearly indicate that the biosynthesized AgNPs may have a great potential in protecting wheat from fungal infection.
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