Fig. 3 in Melatonin and calcium modulate the production of rosmarinic acid, luteolin, and apigenin in Dracocephalum kotschyi under salinity stress

Fig. 3. The effects of root pretreatment with Mel (100 μM) and CaCl2 (5 mM) individually or combined to 5 mM EGTA, 5 mM LaCl3 (La), 200 μM TFP and 100 μM p-CPA for 24 h on PAL (A) and TAL (B) activities in the leaves of D. kotschyi seedling under salt stress (75 mM NaCl). Bars represent the mean ± standard error (n = 3). Means accompanied by the same letter are not significantly different according to LSD at P ≤ 0.05.