Fig. 3 in The complexity of sound quantification of specialized metabolite biosynthesis: The stress related impact on the alkaloid content of Catharanthus roseus

Fig. 3. Dry weight, alkaloid concentration, and alkaloid content in leaves of Catharanthus roseus plants under salt stress. (a): Dry weight of the entire leaves; (b): Concentration of alkaloids in old leaves; (c): Concentration of alkaloids in young leaves; (d): Total alkaloids content in all aerial plant parts. Differentiation between young and old leaves is mentioned in the Materials and methods section. Different lower-case letters on top of the columns for each period of time (10 and 20 days) indicate significant differences (P ≤ 0.05) as calculated using the least significant difference (LSD) test; n = 8. Every period has 5 bars, and these bars from left to right are control, 100 mM, 200 mM, 300 mM, 400 mM NaCl solution, respectively. The bars display the standard deviation.