Abstract
Mycoviruses, which are commonly found in many organisms including plant pathogenic fungi, are obligate parasites that provide an alternative use in biological control. Although the majority have mycoviral dsRNA genome as biological agent, there are also those with DNA genomes. Mycoviruses are spread in fungus cells through cell fusion, cell division and sexual and asexual spore forms. In fungi infected by mycoviruses, they cause some morphological and physiological differences and have an effect on increasing and decreasing virulence. In this review, it was aimed to give information on the effects of mycoviruses against some fungi, including Rhizoctonia solani, and their use in biological control against plant diseases, based on the effect of reducing virulence.