Figure 5

Sites under selection along the evolution of the three starch biosynthesis enzymes exhibiting functional specialization, SS, BE and DBE. A: Starch synthase gene family; B: Branching enzyme gene family (following D2); C: Debranching enzyme gene family. Sites are positioned on consensus sequences built for each gene family. Posterior probability (PP) of sites detected under positive selection in branch a (above the sequence) or b (beneath the sequence) are indicated: * for PP > 0.95, ** for PP > 0.99. Sites highlighted in dark grey in the be enzyme gene correspond to the catalytic domain described by Burton and collaborators [31].