Figure 8.

Role of NO and H₂O₂ in the drought response of transgenic barley lines. Phenotype (a, b) and biomass (d, e) of the wild barley, XZ5, subjected to drought stress after silencing of HvAKT2 and HvHAK1 after addition of exogenous SNP (NO donor) and DMTO (H₂O₂ scavenger) Phenotype (c) and biomass (f) of the wild barley, XZ5, subjected to drought stress after addition of c‐PTIO (NO scavenger) and exogenous H₂O₂. NO (g, h) and H₂O₂ (i, j) content in leaves of silenced and overexpressed plants. Seedlings were grown in BNS for 10 days, followed by PEG‐induced drought for 5 days. Data are mean ± SD (n = 6), and different letters indicate significant differences (P < 0.05). Control, basic nutrition solution (BNS); Drought, BNS + 20% PEG‐induced drought.