FIGURE 3 Effects of exogenous melatonin on the activities of
enzymes in the AsA-GSH cycle and nitrogen metabolism and enzyme gene
expression in seedlings under NaCl stress. Data are presented for (a):
AsA, GSH, AAO, and DHAR, (b): GR, GPX, nitrate nitrogen content,
ammonium nitrogen content, (c): NR and GS, GOGAT and OsGR3 , (d):OsGPX1 , OsNR2 , OsGS1 , and OsGOGAT1 .
Different lowercase letters indicate significant difference
(p<0.05 ).