Author/Authors :
گنجي، شاهين نويسنده Young Researchers Club, Khorasgan Branch, Islamic Azad University, Khorasgan, Isfahan, Iran. Gavanji, Shahin , شمس، مجيد نويسنده shams, majid , شفق، نوشين نويسنده Isfahan Center for Research of Agricultural Science and Natural Resources. Shafagh, Noushin , جلالي زند، عليرضا نويسنده 1- Department of Plant Protection, Khorasgan Branch, Islamic Azad University, Isfahan, Iran jalalizand, alireza , لاركي، بهروز نويسنده Department of Plant protection, Khorasgan (Isfahan) Branch , Islamic Azad University, Isfahan , Iran . Larki, Behrouz , دوست محمدي، محسن نويسنده , , طارقيان، اميرحسين نويسنده Department of Plant protection, Khorasgan (Isfahan) Branch , Islamic Azad University, Isfahan , Iran . Taraghian, Amir Hosein , نيك نژاد، سيد وحيد نويسنده Chemical Engineering-Biotechnology, Department of Biotechnology, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran. niknezhad, Seyyed vahid
Abstract :
Trichoderma spp. serves as biocontrol and growth promoting agents for many crop plants due to their antagonistic properties against plant pathogens. Nanoparticles have become of an interest relatively recently, mostly because of their possible use in diverse technologies. In this research we have investigated the role of silver nanoparticles on growth rate of two biocontrol agent species of Trichoderma viride and T. harzianum by measuring the diameter of colonies of fungi on potato dextrose agar and the dry weight of mycelia culture medium. In this test in order to determine the minimum inhibitory concentration, 25, 50, 100 and 150 ppm of silver nanoparticles were used. General Regression Analysis was used to determine both the time and concentration variable and the possible interactions. The results showed that silver nanoparticles caused inhibited the growth of the two species of fungi. In this paper we suggest that silver nanoparticles, because of the harmful effects on environment, should be used less.
