These data indicate that activation of NADPH oxidase and genera-tion of H2O2 are essential signalling events mediating defence responses induced by the endogenouselicitor(s) present in CDW.

• 上述结果表明CDW激发质膜NADPH氧化酶的活化与H2O2的产生在介导CDW诱导人参细胞抗性反应中,包括PAL活性的提高与人参皂甙的积累,起了重要的信号转导作用。