Amylase activity analysis. The ΔdevR and OE-devR strains, as well as the control strains, were cultured in YPD and DPY liquid media at 30°C for 3 days. The α-amylase activity of the supernatants was then measured. Con, control strain; ΔdevR, AodevR disrupted strain; OE-devR, AodevR-overexpressing strain.