Genomic variability as a driver of plant-pathogen coevolution?
Genomic variability as a driver of plant-pathogen coevolution?
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DOI：
10.1016/j.pbi.2013.12.003
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发表时间：
2014-04
影响因子：
9.5
通讯作者：
Bergelson J
中科院分区：
文献类型：
--
作者：
Karasov TL;Horton MW;Bergelson J
病原菌是植物种群中最强的选择压力之一。因此，了解植物与病原体的共同进化是至少60年来的主要研究重点。最近的比较基因组研究表明，参与植物防御和病原体毒力的基因在各自的基因组中是最具多态性的。这种多样性的哪一部分影响宿主-病原体相互作用？共同进化动力是否维持变异？在这里，我们回顾了最近关于形成这种变异的进化和分子过程的文献，主要关注基因对基因的相互作用。在总结自然植物和病原体种群中形成这种变化的过程的理论和实证研究时，我们发现涉及宿主及其无数微生物的生态相互作用的复杂性与描述它们的模型之间存在脱节。
Pathogens apply one of the strongest selective pressures in plant populations. Understanding plant–pathogen coevolution has therefore been a major research focus for at least sixty years. Recent comparative genomic studies have revealed that the genes involved in plant defense and pathogen virulence are among the most polymorphic in the respective genomes. Which fraction of this diversity influences the host–pathogen interaction? Do coevolutionary dynamics maintain variation? Here we review recent literature on the evolutionary and molecular processes that shape this variation, focusing primarily on gene-for-gene interactions. In summarizing theoretical and empirical studies of the processes that shape this variation in natural plant and pathogen populations, we find a disconnect between the complexity of ecological interactions involving hosts and their myriad microbes, and the models that describe them.