Strong antagonism of an endophyte of towards the ash dieback pathogen, , is mediated by the antifungal secondary metabolite PF1140.

Ash dieback, caused by the fungal pathogen (Helotiales, Ascomycota) is threatening the existence of the European ash, . During our search for biological control agents for this devastating disease, endophytic fungi were isolated from healthy plant tissues and co-cultivated with to assess their antagonistic potential. Among the strains screened, cf.