Genomic variability as a driver of plant-pathogen coevolution?

Talia L. Karasov, Matthew W. Horton, Joy Bergelson

Research output: Contribution to journalReview articlepeer-review


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 [. 1]. 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.

Original languageEnglish (US)
Pages (from-to)24-30
Number of pages7
JournalCurrent Opinion in Plant Biology
Issue number1
StatePublished - Apr 2014

ASJC Scopus subject areas

  • Plant Science


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