Ecofriendly fabrication of silver nanoparticles using quince petal extract and its antibacterial properties against fire blight disease

Saeed Tarighi, Meysam Soltani Nejad
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引用次数: 3

Abstract

Fire blight of pear trees is a devastating disease which is caused by the bacterium namely as Erwinia amylovora (Burrill 1882). Current chemical control methods employed for fire blight disease are periodic applications of copper compounds and streptomycin, especially when environmental conditions are favorable for the infection. Silver nanoparticles (SNPs) are nanoparticles of silver with 1–100 nm size, which are synthesized via different chemical and biological methods. They have been shown to have antibacterial activity against many human and animal pathogens. In this study, silver nanoparticles (SNPs) with an average size of about 25 nm were determined using quince petal aqueous extract. The physicochemical properties of the resulting SNPs were characterized using UV–Vis spectroscopy, X-ray diffraction technique (XRD), transmission electron microscope (TEM), energy dispersive X-ray (EDAX) spectroscopy, Fourier transform infrared spectroscopy (FTIR) and dynamic light scattering (DLS). The SNPs inhibited the growth of E. amylovora in culture media and in-planta. The disease severity was reduced by 80 % and 74 % in pear blossoms and immature fruits treated with 100 μg/mL SNP solution, respectively. This work demonstrates that Cydonia oblonga petal extract is a feasible medium for the synthesis of silver nanoparticles which can be used for the control of fire blight disease.

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用榅桲花瓣提取物制备纳米银颗粒及其对火疫病的抗菌性能
梨树火疫病是一种毁灭性的疾病,由淀粉性欧文氏菌引起(Burrill 1882)。目前用于火疫病的化学控制方法是定期应用铜化合物和链霉素,特别是在环境条件有利于感染的情况下。银纳米粒子(SNPs)是通过不同的化学和生物方法合成的尺寸为1–100 nm的银纳米粒子。它们已被证明对许多人类和动物病原体具有抗菌活性。在这项研究中,使用木瓜花瓣水提取物测定了平均尺寸约为25nm的银纳米颗粒(SNPs)。使用紫外-可见光谱、X射线衍射技术(XRD)、透射电子显微镜(TEM)、能量色散X射线(EDAX)光谱、傅里叶变换红外光谱(FTIR)和动态光散射(DLS)对所得SNPs的物理化学性质进行了表征。SNPs抑制了E.amylovora在培养基和植物中的生长。用100μg/mL SNP溶液处理的梨花和未成熟果实的病害严重程度分别降低了80%和74%。这项工作表明,白头翁花瓣提取物是合成银纳米颗粒的可行介质,可用于控制火疫病。
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