Fig. 1

Phylogenetic tree of SDG proteins from six plant species. A phylogenetic tree was constructed using FastTree based on 297 SDG proteins obtained from Arabidopsis thaliana, Oryza sativa, Gossypium hirsutum, Gossypium barbadense, Gossypium arboreum, and Gossypium raimondii. The SDG proteins of the six species are denoted by distinct symbols and colors, while the eight subfamilies are distinguished by varying background colors