Evolutionary relationships among S. bayanus hybrid strains and their parental species S. uvarum and S. eubayanus. (A) The phylogenetic tree on the left shows the evolutionary relationships among S. bayanus strains with strains of parental species S. uvarum. The right phylogenetic tree shows the evolutionary relationships among S. bayanus strains with representative strains of the other parental species S. eubayanus. Both phylogenetic trees were reconstructed based on shared k-mers of their raw sequencing reads using MIKE. A complete phylogenetic tree that includes all examined S. eubayanus strains was provided as Supplemental Figure S1. (B) Schematic illustration showing a complex origin of S. bayanus strains by independent hybridization events from different strains of S. uvarum and S. eubayanus.
