In this study, we combine ocs activator elements with mas promoter, then fuse the chimeric promoters on GUS gene to construct plant expression vectors. We also demonstrate by comprison to the 35S promoter.

• 融合启动子与GUS报告基因融合构建相应的植物表达载体，并以含CaMV35S启动子的表达载体pBI121作对照转化烟草NC89，利用荧光分光光度计法定量测定各转基因烟草植株的GUS基因表达活性。