Dual culture assay showed that ThzID1-M3 inhibited the radial growth of Fsp. ThzID1-M3 approached Fsp until almost in contact on day 5 and their radial growth stopped immediately. ThzID1-
M3 and Fsp did not overgrow each other for the rest of the 14 day period. We did not microscopically observe mycoparasitism of Fsp by ThzID1-M3. Thus, the interaction between the ThzID1-M3 and Fsp can be categorized as interference competition