Fig 3. Phylogenetic relationships, motif composition, conserved domains, and gene structures of RBOH proteins and their corresponding genes from six Rosaceae species.

(A) The phylogenetic tree was drawn based on the full-length protein sequences of RBOHs using MEGA 7.0. (B) Motifs in RBOH proteins. Ten motifs are indicated by different colored boxes. (C) Conserved domains of the RBOH proteins. Six conserved domains are indicated with different colored boxes. (D) Gene structures of the RBOHs. Introns, exons and untranslated regions (UTRs) are indicated by gray lines, yellow rectangles and green rectangles, respectively.