Figure 2

Gene family evolution in lichen-forming fungi and their relatives. Estimation of gene family expansion and contraction in lichen-forming fungi using the CAFE computational tool (P > 0.01). Red arrows indicate branch points where lichen-forming fungi diverged from non-lichenized ancestors. + and – indicate the numbers of expanded and contracted gene families, respectively. Only 16 species belonging to the Lecanoromyces, Eurotiomyces, and Dotidomyces closely related to lichen-forming fungi were shown, and the analysis results for all 56 species were placed in the Supplementary Figure S2. Species abbreviations: EpusR, Endocarpon pusillum R61883; EpusZ, E. pusillum Z07020; Gfla, Gyalolechia flavorubescens; Umue, Umbilicaria muehlenbergii; Cmet, Cladonia metacorallifera; Cmac, Cladonia macilenta. Abbreviations of other species names are provided in Supplementary Dataset S1.