FIGURE 4.

Copy number of GAMT and its duplication in Brassicaceae. (a) Distribution of copy numbers of GAMT genes among 69 GAMT‐containing flowering plants. (b) Phylogenetic tree of GAMTs in Brassicales. The two clades (clade I and clade II) in blue and in yellow, respectively, depict two clades that resulted from a whole gene duplication event occurred in the ancestor of Brassicaceae known as At‐α. The three smaller blocks (Brassica 1, Brassica 2, and Brassica 3) for Brassica GAMTs indicate a possible outcome of whole genome triplication event