FIGURE 3.

Sites under positive selection in α-gliadin. Amino acids under selection were detected by estimating the ratio of non-synonymous (dN) to synonymous substitutions (dS) in each codon in the α-gliadin alignment for each subgenome. The panels show the Bayesian posterior probability of an amino acid site being under positive selection for the gliadin genes of each subgenome separately and the alignment of all three together (ABD). Highlighted in blue are the sites with a posterior probability > 95%. The different conserved domains (from Noma et al., 2016) are marked at the top of the panels. Sites that were difficult to align in the polyglutamine domains are excluded.