Fig. 2.

Phylogenetic relationships, gene structure and motif composition of NAC genes in common bean. a The phylogenetic tree of NAC genes from common bean was constructed in MEGA4.0 using the Neighbor-Joining (NJ) method with 1,000 bootstrap replicates. b The conserved motifs of common bean NAC genes were elucidated by MEME. The conserved motifs are represented by the different colored boxes. The black lines represent the non-conserved sequences. c Exon/intron structures of NAC genes from common bean. Exons and introns are represented by green boxes and black lines, respectively. The sizes of exons and introns can be estimated using the scale below