FIGURE 10.

Effect of tAPX silencing on expression of ROS-responsive genes under HL. Seventeen-day-old IS-GUS-2-17 and IS-tAPX-19-23 plants were sprayed with a 100 μm estrogen and kept under NL. At 48 h after treatment with estrogen, IS-GUS-2-17 and IS-tAPX-19-23 plants were exposed to HL (1000 μmol photons m⁻² s⁻¹). The transcript levels of ROS-responsive genes (HsfA2, APX2, and HSP18.1-C1) were measured by q-PCR. Error bars indicate S.D. (n = 3). Significant differences: *, p < 0.05 versus the value for IS-GUS-2-17 plants.