The efficacy of Nanoparticles Containing Talaromyces Flavus in Inhibiting the Growth of Verticillium Dahliae, The Causal Agent of Cotton Wilt Disease

In Iran, during conducting significant research, the importance of Talaromyces flavus antagonistic fungus has been known to inhibit the growth of some of the important soilborne plant pathogens such as Rhizoctonia solani, Verticillium dahliae and Fusarium oxysporum. Also, according to the results of previous studies, preparation abovementioned fungal bio formulation was possible with substrates in the form of various plant residues such as rice bran, wheat straw and corn wood using them in the greenhouse and field, in addition to reducing. The occurrence of diseases such as the seedling death, Verticillium and Fusarium wilt in cotton, sugar beet, potato, and greenhouse tomato and cucumber, increased yield also observed. According to the results obtained to this stage of the research, the commercialization of the bio-formulation of this fungus is very importance. Since the marketing is considered as one of the important factors for the continuation of commercialization, consideration of the type of bio formulation with easy applications can greatly affect the attraction of relevant consumers and a successful marketing. Therefore, in light of the recent advances in the application of nanotechnology in various sciences, it seems necessary in the further research to prepare different nano formulations of the biological agent with an emphasis on the ease of use, and study their efficacy in biological control of the plant diseases. In this study, we prepared nano-bio-formulations including two types of nanocapsules (F1 and F3), a type of nano emulsion (F2), and a powder type nano formulation (F4) form T. flavus fungus. Three and six months after the production, laboratory tests of nanoformulations were performed in a completely randomized design in terms of the efficiency in inhibiting the colony growth of Verticillium dahliae. The results showed that nanopowder was more effective than other nanoformulations in term of inhibiting the colony growth of the pathogen.