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拟南芥是研究植物与病原物相互作用的模式植物。植物感病和抗病取决于病原物无毒基因产物和寄主抗病基因产物的识别,以及随后的相关防卫反应的激活。在拟南芥的抗病过程中,水杨酸、茉莉酸、乙烯等信号分子都不同程度地参与着抗病过程中的不同环节,起着非常重要的作用。由于这些信号分子在对不同病原菌的抗性中的作用存在差异,因而将抗病信号传导分为依赖于水杨酸和依赖于茉莉酸/乙烯的途径。本文将着重讨论这些信号分子在植物系统获得抗性以及诱导系统抗性中的作用。
Arabidopsis is a model plant that studies the interaction of plants with pathogens. Plant susceptibility and disease resistance depend on the identification of pathogenic non-toxic gene products and host resistance gene products, as well as the subsequent activation of relevant defense responses. During the disease resistance of Arabidopsis thaliana, signal molecules such as salicylic acid, jasmonic acid and ethylene all play different roles in different stages of disease resistance. Due to differences in the roles of these signaling molecules in resistance to different pathogens, resistance signaling is divided into a salicylate-dependent and jasmonic acid / ethylene-dependent pathway. This article will focus on the role of these signaling molecules in gaining resistance and inducing systemic resistance in plant systems.