植物类病变坏死突变体及其基因的研究进展

在植物中类病变坏死突变现象广泛存在,突变体植株在无病害侵染也未受逆境或损伤的条件下自发形成与病原物侵染后坏死类似的症状,它们与植物抗病及细胞程序化死亡相关,并可能增强系统抗病性。综述了几种植物的典型类病变坏死突变体及其基因的研究情况,探讨了其发生的机制并对今后的应用前景进行了展望。

The Progress on the Studies of Plant Lesion Mimic Mutants and Genes

There are extensive disease lesion mimic mutants in plant.These mutants spontaneously produce lesions that resemble disease symptoms in the absence of pathogen attack and other damage or suppressed conditions. Lesion mimic mutations have been shown to be involved in programmed cell death,which in some instances leads to enhanced disease resistance to multiple pathogens.Several plant lesion mimic genes have been cloned,and their molecular mechanisms were studied. The progress in this field will probably provide new approaches to breed crop varieties with durable resistance to pathogens. ;