Fig. 1. (A) Phylogenetic analysis of 48 CsPME protein sequences from the sweet orange genome. Amino acid sequences were aligned using ClustalW and the phylogenetic tree was drawn using MEGA7 with the Neighbor-Joining method. The bootstrap values indicated on the tree were calculated for 1,000 replicates. (B) The exon-intron structure of 48 CsPME genes. Orange boxes indicate exons. Blue and black lines indicate 5’-/3’-untranslated regions and introns, respectively