Molecular basis of the hierarchical recognition of viruses by the alleles of tobamovirus resistance gene from Capsicum plants

植物通过识别病原菌来抵抗病原菌感染，但有些病原菌通过突变逃避了对病原菌的识别。利用辣椒抗病基因的几个等位基因，研究了植物对辣椒病毒的识别机制。识别不同组病毒的抗性基因之间的重组揭示了决定识别特异性的区域。此外，还从一种野生烟草中分离到一种类似的病毒抗性基因。

Plants recognize pathogens to resist pathogen infection, but some pathogens escape the recognition by mutation. In this study, the mechanism for virus recognition by plants was studied using several alleles of virus resistance gene from Capsicum plants. Recombination between resistance genes recognizing different sets of viruses revealed the region determining the recognition specificity. In addition, an similar virus resistance gene was isolated from a wild tobacco species.