Fpr1 is part of a gene family that has expanded in plant pathogenic Sordariomycetes. Phylogram of PR-1-like proteins in fungi. Fpr1 from F. oxysporum (FOXG_09795); Rbt4 from C. albicans (XP_718792); Pry1, Pry2, and Pry3 from S. cerevisiae (SGD_YJL078C); P14a from Solanum lycopersicum (P04284); PR1a from Nicotiana tabacum (CAA29022.1); AtPR-1 from Arabidopsis thaliana (P33154); and Sc7 from Schizophyllum commune (P35794). For the remaining proteins, gene ID numbers are given preceded by a species prefix: AF, A. fumigatus; AN, A. nidulans; AT, A. thaliana; BC, B. cinerea; CA, C. albicans; CI, C. immitis; CN, Cryptococcus neoformans; FG, F. graminearum; FO, F. oxysporum; MG, M. grisea; NC, N. crassa; RO, R. oryzae; SC, S. cerevisiae; and UM, U. maydis. Bootstrap values obtained from 1000 replicates are indicated at the nodes. Scale bar = relative length of each branch. The subfamily expanded in the pathogenic Sordariomycetes Fusarium and Magnaporthe is circled. Proteins containing a predicted GPI sequence are embedded in a gray area. Subclades corresponding to PR-1 proteins from Hemiascomycetes and plants are indicated.