Phylogenetic relationships of PALM1 homologs. A neighbor joining phylogenetic tree was reconstructed using PAUP4.0 with 1,000 bootstrap repeats. MtPALM1, Palmate-like pentafoliata1 from Medicago truncatula; Ms, M. sativa; Gm, Glycine max; Lj, Lotus japonicus; At, Arabidopsis thaliana; Al, A. lyrata; Vv, Vitis vinifera; Cs, Cucumis sativus; Me, Manihot esculenta; Mg, Mimulus guttatus; Pt, Populus trichocarpa; Rc, Ricinus comunis; and Cp, Carica papaya.