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五十多年前Mckinney等观察到用某些病毒的弱毒株系预先接种植物,随后再接种相关的强毒株时常常不表现强毒株系症状。以后,Salaman最先证实了可利用植物病毒防治病毒病害。这种现象称为“交互保护”。普遍观察到的强毒株系不能表现出症
Mckinney et al. Observed more than fifty years ago that pre-inoculation of plants with attenuated strains of certain viruses followed by subsequent inoculation of the virulent strain of interest did not often present symptoms of virulent strains. Later, Salaman first confirmed that the plant virus can be used to control the virus disease. This phenomenon is called “interactive protection.” The commonly observed virulent strain can not show disease