Genetic polymorphisms are the basis of the natural diversity seen in all life on earth, also in plant-pathogen interactions. Initially, studies on plant-pathogen interaction focused on reporting phenotypic variation in resistance properties and on the identification of underlying major genes. Nowadays, the field of plant-pathogen interactions is moving from focusing on families of single dominant genes involved in gene-for-gene interactions to an understanding of the plant immune system in the context of a much more complex signaling network and quantitative resistance. Simultaneously, studies on pathosystems from the wild and genome analyses advanced, revealing tremendous variation in natural plant populations. It is now imperative to place studies on genetic diversity and evolution of plant-pathogen interactions in the appropriate molecular biological, as well as evolutionary, context.

中文翻译：

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植物中的多态性可限制病原体的损失：从基因家族扩展到复杂的网络进化。

遗传多态性是地球上所有生命以及植物与病原体相互作用中所见自然多样性的基础。最初，有关植物与病原体相互作用的研究集中在报告抗性的表型变异以及对潜在主要基因的鉴定上。如今，植物-病原体相互作用的领域已从专注于基因对基因相互作用的单个显性基因家族转移到在更为复杂的信号网络和定量抗性的背景下对植物免疫系统的理解。同时，有关野生病原体和基因组分析的研究也在不断发展，揭示了天然植物种群的巨大差异。