“…A reduction in the mycelial growth of different pathogens infested with mycoviruses has been reported to be related to hypovirulence in fungi in several studies (Bottacin et al, 1994;Ahn & Lee, 2001;Castro et al, 2003;Robin et al, 2010;Rodríguez-García et al, 2014;Zheng et al, 2014;Yu et al, 2015). Nevertheless, the effect on mycelial growth may also be determined by the species (Vainio et al, 2012;Hyder et al, 2013), isolate (Hunst et al, 1986;Rodríguez-García et al, 2014;Yu et al, 2015) temperature (Vainio et al, 2010;Bryner & Rigling, 2011;Romeralo et al, 2012;Zamora et al, 2016) or the type of mycovirus (Cryphonectria parasitica CHV1, mycovirus hypovirulences). These factors, among others, may explain the inconsistencies in the findings of different studies.…”