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AB performed all the experiments and co-drafted the manuscript. AD supervised the study and co-drafted the manuscript. Both authors read and approved the final manuscript.”
“Background In order to generate effective mechanisms for the 4��8C control of plant diseases, it is crucial to gain insights into the diversity and population dynamics of plant pathogens [1, 2]. Pathogens showing a high genotypic diversity are regarded as being harder to control, because plant resistance can be overcome by more suitable pathotypes [3]. Hence, the development of durable resistance becomes more challenging with this kind of pathogens. Factors such as the genetic flow between pathogen populations and processes that increase the genetic changes of these populations may contribute to break the resistance in monocultures [3–5]. Xanthomonas axonopodis pv.