Authors’ contributions
BJ, HH, HA, JBM, EF, XE and DT collected samples. SA, TD, PG, HA, IM, JM, SCA, BJ, DT, JBM and EF contributed to isolation of the pathogen and phenotyping experiments. SA, SCA, HA and JM conducted the molecular work. SA, PG, SR and EF conducted population genetics and genomic analyses of the data. TD contributed to microsatellite genotyping. FC and AL contributed to analyses of mating type in the genomic data. SA, FB, IM and EF conducted the image analyses and statistical analyses of phenotypic data. SA, PG, HH, JBM and EF wrote the manuscript. All authors contributed to the revision of the manuscript. SA, PG, HH, JBM and EF designed the study. DT, JBM and EF provided resources for the study.