Saif saad allah Hassan) 1*(and Abdullah Abdul krim Hassan)1(
- plant protection, Faculty of Agriculture, Tikrit University,Salah Al-Din, Iraq.
(*Corresponding author: Eng. Saif Hassan. E-Mail: saifnassrei@gmail.com).
Received: 11/06/2021 Accepted: 11/11/2021
Abstract:
A laboratory and field study were conducted during the 2018/2019 season in the laboratories of the Department of Plant Protection and Fields of the College of Agriculture / Tikrit University. The study evaluated the efficiency of biosynthetic silver nanoparticles from the food fungus Pleurotusostreatus A2019 in controlwheat root rot disease caused by PythumaphanidermatumThe laboratory results showed the efficiency of all concentrations of the prepared silver nanoparticles to inhibit the pathogenic fungus P. aphanidermatum compared to the control, and the highest percentage of inhibition at the concentration was 1.5 mM in the filter of the fungus P. ostreatus A2019, which amounted to 0.68% compared to the control in which no inhibition rate was recorded. While all concentrations and types of prepared silver nanoparticles showed the highest activity of nitrate reduction enzyme compared to the control, and the highest activity was at a concentration of 1.5 mM in the filter of the fungus P.ostreatus A2019 It was 0.68 units/ml compared to the control, which amounted to 0.068 units/ml. on the other handthe field results for estimating the concentration of the mineral glutathione in the plant, where the control treatment showed the lowest concentration of glutathione, which amounted to 0.6 mg.ml-1, which did not make any significant difference with the treatment of silver nanoparticles, which amounted to 0.63 mg.ml-1 .
Key words: silver nanoparticles, Pleurotusspp, Pythium aphanidermatum, glutathione
Full paper in Arabic: PDF