Fig. 5.

Phylogenetic relationships, gene structure and architecture of conserved protein motifs in R2R3-MYB genes from pineapple. a The neighbor-joining (NJ) tree on the left includes 94 R2R3-MYB proteins from pineapple and some representatives from Arabidopsis. The MYB proteins were clustered into 26 subfamilies, sequentially designated as A1 to A26. The subfamily name which was designated as previously reports of AtMYB proteins in Arabidopsis are also marked (Dubos et al., 2010). Six proteins did not fit well into clusters. b Exon/intron structures of R2R3-MYB genes from pineapple. Exon(s) and intron(s) are represented by green boxes and black lines, respectively. The MYB domain(s) are highlighted by red boxes, while untranslated region(s) are indicated by blue boxes. The number indicates the phases of corresponding introns. c Architecture of conserved protein motifs in 26 subfamilies. Each motif is represented by a number on the colored box