Schematic representation of the evolutionary relationship of the 126 Arabidopsis R2R3-MYB family proteins and the petunia ODO1, EOBI, and EOBII proteins. Arabidopsis proteins relevant to this research are marked in blue, while petunia proteins are marked red. Protein sequences were aligned using the MUSCLE algorithm, and then the unconserved regions in N and C termini were removed in an unbiased manner. The tree was inferred using the maximum-likelihood method and 1,000 bootstraps using MEGA 7. The MYB99 subclade, MYB21/MYB24, and EOBI/EOBII are highlighted. Bootstrap values are presented as percentages, and the scale bar indicates 0.2 amino acid substitutions per position.