The aim of this study was to investigate the antifungal effects and molecular changes caused by Usnea longissima Ach. extracts against Fusarium greaminearum. In agar well diffusion assay, zone inhibition increased as concentration in both methanol acetone (1, 10, 20 50 mg/ml). terms bioactivities, 1 mg/ml active, while other concentrations were very active. At level, extract analyzed qPCR with ...