The expression patterns of dlo-miR408 and the target gene, DlNUDT23, in the treatment of differential concentration of riboflavin and DPI. A) The relative expression of dlo-miR408-3p, dlo-miR408-5p1, DlNUDT23, DlFlavokinase, and pre-miR408 in different concentrations of riboflavin treated on different days (8, 11, and 14 d). CK means control check, 0.5, 1, 2, and 4 mean different concentrations of riboflavin treatment, and the unit is mM. B) The relative expression of dlo-miR408-3p and DlNUDT23 in different concentrations of DPI treated on different days (8, 11, and 14 d), CK means control check, 0.625, 1.25, and 2.5 mean different concentrations of DPI treatment, and the unit is μM. Error bars indicate means ± SDs, n = 3 (Duncan’s post hoc test, *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001).