Copy number of seven types of GID1s in various plant species. Phylogenetic relationships among angiosperms are based on Angiosperm Phylogeny Group (APG) IV (39). We classified GID1s into seven different types: that is, A and B of eudicots, M of monocots, BA of basal angiosperms, G of gymnosperms, F of ferns, and L of lycophytes, based on the phylogenetic analysis. Detailed information is presented in Datasets S2 and S3 (list of 169 GID1s from 66 plant species and alignment) and SI Appendix, Fig. S15 (phylogenetic tree).