植物抗病分子机制研究进展

Progress in the Research of the Molecular Mechanisms of Plant Resistance

植物抗病机制是目前研究的热点。在长期的进化过程中,植物形成了一系列复杂有效的防御机制来抵御、破坏病原物的侵染。植物抗病基因在植物抗性反应中起着重要的作用,植物一旦监测到病原物马上起始防御反应,并伴随着植物体内一系列细胞和生理生化的变化。近年来,基因沉默作为一个重要的细胞内防御外源核酸的机制,越来越受到科学家重视。综述了植物抗病基因和基因沉默机制在植物抗病反应中的重要作用,并对研究植物抗病机制的前景做了展望。

Plants have not been passive in the face of plant-pathogenic viruses,assaults,but have developed elaborate and effective defence mechanisms to prevent,or limit,damage owing to viral infection. Plant resistance genes confer resistance to various pathogens,including viruses.The defence response that is initiated after detection of a specific virus is stereotypical,and the cellular and physiological features associated with it have been well characterized. Recently, RNA silencing has gained prominence as an important cellular pathway for defence against foreign nucleic acids,including viruses. These pathways function in concert to result in effective protection against virus infection in plants.