3.2.10 Effects of Salinity on Ascorbate and Glutathione Contents
The total ascorbate concentration no significantly changed in the shoots treated with 150 mM NaCl. However, the 300 mM NaCl and further salt concentrations (450 and 600 mM) significantly increased the total ascorbate content in comparison with 0 mM NaCl treatment. As compared to the 0 mM NaCl treatment, there were 2.2-fold and 8-fold increases in ASC content of the shoots treated with 300 mM and 600 mM NaCl, respectively (Figure 4A).
Total glutathione content gradually enhanced while salt concentration was increasing in S. hieraciifolia . There were 3.4-fold and 10-fold increases in GSH content of the shoots treated with 300 mM and 600 mM NaCl in comparison with the 0 mM NaCl treatment respectively (Figure 4B).