Phylogenetic tree of the YABBY proteins from Arabidopsis, rice, and eight cucurbit species. Red star, red star filled with pink color, yellow star, green star filled with light purple color, black star filled with dark purple color, bluish grey star, red star filled with blue color, black star, black triangle filled with red color and black circle filled with green color represent the YABBYs from cucumber, melon, watermelon, wax gourd, pumpkin, zucchini, silver-seed gourd, bottle gourd, Arabidopsis, and rice, respectively. Cs, cucumber (C. sativus L.); MELO, melon (C. melo L.); Cla, watermelon (C. lanatus); Bhi, wax gourd (B. hispida); Cma, pumpkin (C. maxima); Cp, zucchini (C. pepo L.); Carg, silver-seed gourd (C. argyrosperma); Lsi, bottle gourd (L. siceraria); AT, Arabidopsis (Arabidopsis thaliana); Os, rice (Oryza sativa L.).