Antifungal activity of silver nanoparticles against phytopathogenic fungi in vitro

Abstract

In this study, the antifungal activity of silver nano solution against some phytopathogenic fungi, which were isolated from ginger (P. zingerberis, F. oxysporum), chili (Colletotrichum spp.), and wheat, barley (Alternaria spp., H. teres) was carried out in vitro by using PDA medium. The results showed that silver nanoparticles (AgNPs) had different antifungal effects at different concentrations for each fungus. AgNPs at a concentration of 60 ppm inhibited 39.5% and 48.5% growth of P. zingerberis and F. oxysporum, respectively. The inhibition level of AgNPs at 40 ppm concentration against Colletotrichum spp. was 59.4%. The antifungal activity of AgNPs against H. teres at concentrations 50 and 100 ppm reached 53.3%, against Alternaria spp. 27.8% and 33.3%, respectively. Thus, the silver nano solution could be recommended to effectively prevent and treat some fungal diseases of plants.