Extensive Intra-Kingdom Horizontal Gene Transfer Converging on a Fungal Fructose Transporter Gene
Figure 1
Phylogeny of Fsy1 transporters.
Phylogeny based on the amino acid sequence of all Fsy1 homologues identified in the Pezizomycotina and the Saccharomycotina. For species possessing multiple Fsy1 homologues, the numbers ‘1’, ‘2’ or ‘3’ are added to the species designation. Background colors refer to the supra-generic taxa to which each species belongs. White numbers before species names denote the number of introns found in each FSY1 gene. Putative HGT events discussed in the text are numbered sequentially in boxes: yellow, HGT events supported by topology tests; white, putative HGT events not supported by topology tests; grey, HGT events that cannot be tested. FSY1 genes functionally characterized in this study or in previous studies are indicated by red and white stars, respectively. The tree is rooted at the midpoint. Bootstrap support values are depicted in tree branches (>50%) as given in the key. Species names are abbreviated as given in Table S1.