assessment of the antifungal effect of silver nanoparticles produced by pseudomonas sp1 on screened fungus in meymand historic village

today, rocky monuments are being exposed to different physical, chemical and biological factors and therefore going to be ruined. one of physical destructive factors is growing of fungus and lichens on the rocks. this research aims to make use of silver nano-particles produced through microbial method in order to prevent growth and progression of fungus detached from rocky surfaces in meymand historic village. in the first step, some parts of destructed rocky surfaces and grown lichens on rocky monuments in the village were taken as samples and transferred to lab. after isolation of the fungus from the samples, identification of all samples were done to the genus level by means of conventional mycological methods, morphology on ygc medium and study of microscopic by means of slide culture. then the effect of silver nano-particles produced by pseudomonas sp1 on the fungal isolations was studied. based on what observed, it was proved that nanoparticles produced by pseudomonas sp1 affected about 68.42% on fungal isolations screened from meymand rocky and historic village and hindered their growth; therefore growth of fungus on historic rocky surfaces can be prevented by means of such particles in order to protect cultural heritages of the society.