Fig. 2

Phylogenetic tree that represents the relationships among 37 expansin genes of Tartary buckwheat and 34 expansin genes of A. thaliana. The phylogenetic tree of the expansin protein sequences of Tartary buckwheat and A. thaliana was constructed with Mega 7.0 by the maximum likelihood method and was visualized by the online tool Interactive Tree Of Life (iTOL) (http://itol2.embl.de/). The genes in Tartary buckwheat are marked in red diamond, while those in A. thaliana are marked in green circle