Fig 3. Phylogenetic relationships, gene structure and motif compositions of BdNAC genes.

(A). The unrooted phylogenetic tree was created in MEGA5 software with the neighbor-joining method with 1,000 bootstrap iterations based on 101 full-length amino acids of BdNAC TFs. Thirteen major phylogenetic groups designated as I to XIII were marked with different color backgrounds. (B). Exon/intron structures of BdNAC genes. Exons and introns were represented by green boxes and black lines, respectively. Sizes of exons and introns could be estimated using the scale at bottom. (C). Schematic representation of the conserved motifs in the BdNAC TFs elucidated by MEME. Each motif was represented by a colored box numbered at the bottom. The black lines represented the non conserved sequences. The length of protein could be estimated using the scale at the bottom. The details of individual motif were shown in S5 Fig.