The coat protein gene of GPV, a Chinese serotype isolate of BYDV, was used to construct three plant expression vectors, pPPI 2, pPPI 3 and pPPI 5, which contain Act promoter or Emu promoter respectively.

• 以我国特有的大麦黄矮病毒 GPV株系的外壳蛋白 ( CP)基因为材料 ,设计合成了分别含有 Act启动子或 Emu启动子的植物表达载体 p PPI2、p PPI3和 p PPI5。