Fig. 6

Increased oxidative tolerance of STK overexpression plants. A Leaf phenotype of WT, STK-OE and STK-KO plants at the three-leaf stage under normal conditions or after 100 mM H₂O₂ stress for 2 d. B Total chlorophyll contents of the WT, STK-OE and STK-KO plants under normal and H₂O₂ stress conditions. FW, Fresh weight. Data are presented as mean ± SD (n = 3, **P ≤ 0.01, Tukey’s test). C DAB staining for H₂O₂ in leaves from normal and H₂O₂-stressed WT, STK-OE and STK-KO plants for 1 d