Figure 9.

Comparison of transcripts of ROS-relating genes, H₂O₂ contents, and ROS-scavenging enzymatic activity between WT and phyB mutant. Analyses of transcripts of phyB, APX2, APX3, APX4, APX5, APX8, and CAT3 (A), H₂O₂ contents (B) and enzymatic activity of APX and CAT (C) in roots of WT and phyB (HO) mutant under before drought (control), after drought and recovery. The expression levels were normalized to that of Ubi5 using real-time polymerase chain reaction (A). As the biological replicates, we used different three samples. The error bars of the each sample means ± SD (n = 9) (B,C). WT, wild-type segregants of T-DNA insertional line in PhyB; HO, homozygote; C, control; D, drought treatment for 3 d; R, recovery for 7 d after drought treatment. ^*P < 0.05; ^**P < 0.01; ^***P < 0.001.