Improved resistance to basal rot disease and promotion of onion plant growth by Aspergillus terreus-mediated silver nanoparticles

文献类型： 外文期刊

第一作者： Hegazy, Mohamed G. A.

作者： Hegazy, Mohamed G. A.;Gad, Mahmoud;Lamlom, Sobhi F.;Teiba, Islam I.;Al-Bedak, Osama A. M.;Al-Bedak, Osama A. M.;Ali, Muhammad Moaaz;Ali, Muhammad Moaaz;Alhomaidi, Eman;Al Tami, Mona Saleh;Yousef, Ahmed F.;Ali, Waleed M.;Yousef, Ahmed F.

作者机构：

关键词： Allium cepa; Antifungal activity; Antioxidant activity; Aspergillus terreus-mediated; Disease management; Ecofriendly fungicides; Greenhouse; Nanotechnology; Onion plant growth promotion; Rot disease resistance; Silver nanoparticles

期刊名称：ELECTRONIC JOURNAL OF BIOTECHNOLOGY （ 影响因子：2.5； 五年影响因子：2.7 ）

ISSN： 0717-3458

年卷期： 2025 年 77 卷

页码：

收录情况： SCI

摘要： Background: Onions, a vital agricultural crop rich in carbohydrates and essential minerals, face severe threats from Fusarium oxysporum, the causative agent of basal rot disease. This study assessed the effectiveness of extracellular, green-synthesized silver nanoparticles (AgNPs), produced by Aspergillus terreus AUMC 15760, in managing basal rot disease caused by F. oxysporum AUMC 15798. Results: AgNPs ranging from 12.1 to 28.7 nm were incorporated into PDA media at concentrations of 50, 100, 150, and 200 ppm, achieving fungal growth inhibition rates of 24.88%, 40.77%, 54.44%, and 69.33%, respectively. A greenhouse experiment was carried out using onion seedlings, with a randomized complete block design (RCBD) to compare eight different treatments: 100 ppm AgNPs (spray), 50 ppm AgNPs (spray), 100 ppm AgNPs (soil application), 50 ppm AgNPs (soil application), Dovex spray (50%), Dovex soil application (50%), a negative control, and a positive control. Greenhouse results showed a significant reduction in disease severity, with Dovex lowering it to 20%. AgNPs at 50 ppm reduced severity to 57.77% (soil) and 35.55% (spray), while 100 ppm further decreased it to 31.1% (soil) and 22.2% (spray). The application of 100 ppm AgNPs improved plant growth parameters. It also enhanced chlorophyll a, chlorophyll b, and carotenoid levels. The greatest reductions in phenolic (0.34 mg/g) and anthocyanin contents (0.48 mg/g), as well as peroxidase (0.44 lmol/min) and catalase activities (0.19 lmol/min), were recorded in plants treated with 100 ppm AgNPs (spray). Conclusions: AgNPs effectively control basal rot disease, boost plant growth, and regulate antioxidant activity. How to cite: Hegazy MG, Gad M, Lamlom SF, et al. Improved resistance to basal rot disease and promotion of onion plant growth by Aspergillus terreus-mediated silver nanoparticles. Electron J Biotechnol 2025;77. https://doi.org/10.1016/j.ejbt.2025.05.003. (c) 2025 The Author(s). Published by Elsevier Inc. on behalf of Pontificia Universidad Cat oe lica de Valpara & Uacute;so. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序