Abstract
The tropospheric ozone (O3), which is the major component of photochemical oxidants, is considered as the most phytotoxic air pollutant. High concentration of O3 causes significant damage in plant growth and induces oxidative stress that activates programmed cell death. Analysis of transcriptome has provided important information on understanding ozone stress response and mechanism. However, mechanisms of the ozone stress response in plants remain to be clarified. In this study, we screened our CRES-T transgenic plants, in which the chimeric repressor against various transcription factor is expressed, to identify transcription factors involved in ozone stress response. CRES-T is a gene silencing technology, which could efficiently suppress functions of both target and functionally-redundant transcription factors. We describe the trascription factors that are responsible for O3-sensitive or insensitive phenotypes of CRES-T transgenic plants.
