Fig. 4.

Phylogenetic clustering, conserved protein motifs and gene structure of CsWRKY genes. Left panel: the phylogenetic tree was constructed from the WRKY domain sequences of CsWRKY proteins. The different groups and subgroups are shown in different colors. Middle panel: the motifs are represented by different colored boxes. Details of each motif are shown in Additional file 5. Right panel: gene structure of CsWRKY transcription factors. Untranslated 5′- and 3′-regions, exons, and introns are indicated by green boxes, yellow boxes, and black lines, respectively