PLOS Pathogens: A Population Genomics Perspective on the Emergence and Adaptation of New Plant Pathogens in Agro-Ecosystems | Viruses and Bioinformatics from |

Plants and pathogens evolve in response to each other. This co-evolutionary arms race is fueled by genetic variation underlying the recognition of pathogen proteins by the host and the defeat of host defenses by the pathogen. Together with new mutations, genetic diversity in populations of both the host and pathogen represent a pool of possible variants to maintain adaptation via natural selection.