Part of the phylogenetic relationships and subgroup designations of MYB proteins from Chinese cabbage and
. (A) Maximum-Likelihood tree representing the relationships among 274 MYB proteins from Chinese cabbage and 132 from Arabidopsis, including seven and 17 3R- and atypical MYBs from Arabidopsis and Chinese cabbage, respectively. The proteins are clustered into 45 subgroups, each designated with a subgroup number (e.g., C1). The numbers beside the branches represent bootstrap support values (>50%) from 1000 replications. Five proteins did not fit well into clusters. (B) Architecture of conserved protein motifs in the 45 subfamilies. The motifs on the right were analyzed using MEME and are represented as boxes. (C) Expression patterns of MYB genes in Chinese cabbage in different tissues (root, leaf and stem). The Illumina RNA-seq data were reanalyzed, and the RPKM values were log 2 transformed and a heat map was generated using the Cluster 3.0 software. The bar on the left represents log 2 transformed values from low to high expression. NA represents no available data.