Jones David A, Takemoto Daigo
Research School of Biological Sciences, Australian National University, ACT 2601 Canberra, Australia.
Curr Opin Immunol. 2004 Feb;16(1):48-62. doi: 10.1016/j.coi.2003.11.016.
Plants have the capacity to recognise and reject pathogens at various stages of their attempted colonisation of the plant. Non-specific rejection often arises as a consequence of the potential pathogen's attempt to breach the first lines of plant defence. Pathogens able to penetrate beyond this barrier of non-host resistance may seek a subtle and persuasive relationship with the plant. For some, this may be limited to molecular signals released outside the plant cell wall, but for others it includes penetration of the cell wall and the delivery of signal molecules to the plant cytosol. Direct or indirect recognition of these signals triggers host-specific resistance. Our understanding of host-specific resistance and its possible links to non-host-specific resistance has advanced significantly as more is discovered about the nature and function of the molecules underpinning both kinds of resistance.
植物有能力在病原体试图定殖于植物的各个阶段识别并抵御它们。非特异性抵御通常是潜在病原体试图突破植物第一道防线的结果。能够突破非寄主抗性这一屏障的病原体可能会寻求与植物建立一种微妙且有说服力的关系。对于一些病原体来说，这可能仅限于在植物细胞壁外释放分子信号，但对于另一些病原体而言，这包括穿透细胞壁并将信号分子传递到植物细胞质中。对这些信号的直接或间接识别会触发寄主特异性抗性。随着我们对支撑这两种抗性的分子的性质和功能有了更多了解，我们对寄主特异性抗性及其与非寄主特异性抗性可能存在的联系的认识有了显著进展。
