ORIGINAL RESEARCH
Investigation of the Impact of Myco-Synthesized
Silver Nanoparticles Against Soil Borne Fusarium
oxysporum: Ultrastructure Appraisal
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1
The Regional Center for Mycology and Biotechnology, Al-Azhar University, 11787, Nasr City, Cairo, Egypt
2
Animal Production Department, Food and Agriculture Sciences College, King Saud University, Riyadh, Saudi Arabia
3
Department of Animal and Veterinary Sciences, Clemson University, 29630, Clemson, South Carolina,
United States of America
Submission date: 2024-10-11
Final revision date: 2024-11-21
Acceptance date: 2025-03-05
Online publication date: 2025-05-23
Corresponding author
Mohammed Yosri
The Regional Center for Mycology and Biotechnology- Al azahr University, Cairo, Egypt, Egypt
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ABSTRACT
Fungal biogenic production of silver nanoparticles (AgNPs) is a promising trend due to their facile
handling and high metal tolerance. Moreover, they release a lot of extracellular molecules, which help
to keep the nanoparticles in a steady form. Fusarium oxysporum (F. oxysporum) has a prolonged life
span in the soil. It is one of the main causes of agricultural plants wilting in several commercially
significant crops. In this investigation, a fungus was isolated from Minyat Al Nasr in Egypt, identified
by traditional and molecular procedures as Penicillium expansum (P. expansum), and deposited
in the gene bank with a code of PQ084992. P. expansum produced silver nanoparticles, which could be
seen by a change in color. It has a notable peak at 420 nm through testing by UV spectrophotometry.
Nanoparticles have been examined by electron microscopy, revealing their size range as 40-80 nm.
The characterization has been completed using XRD, EDX, and FTTR. The myco-synthesized
silver nanoparticles had anti-F. oxysporum with an inhibition zone of 23.1±1.2 mm, and its MIC was
15.6±0.6 μg/mL. This anti-F. oxysporum is produced by altering the ultrastructure of F. oxysporum
when using the produced wilt disease in plants. Nanoparticles in relation to amphotericin B. Silver
nanoparticles were tested on Vero cells and showed minimal cytotoxicity with IC50 = 165.0±2.6 μg/mL.
These results suggest the potential of applying myco-synthesized silver nanoparticles against fungal
pathogens.