(A) is a bootstrapped maximum-likelihood phylogenetic tree of 18 A. thaliana and A. lyrata chloroplast genomes. (B) presents a bootstrapped maximum-likelihood phylogenetic tree of concatenated common GATA genes across 19 A. thaliana ecotypes and A. lyrata. Numbers on branches in both phylogenetic trees indicate supporting values of maximum-likelihood, neighbor-joining, and Bayesian inference tree, respectively. The scale bars of both trees indicate estimated DNA substitutions per site. Gray, purple, blue, and red circles are corresponding to Types 1, 2, 3, and 4 mentioned in Fig 8 and Table 4, respectively. The dotted straight and curved lines connect the same ecotype in both trees.