Fig. 2From: Genome-wide analysis of the NAC transcription factor family in broomcorn millet (Panicum miliaceum L.) and expression analysis under drought stressPhylogenetic relationships, gene structure, and architecture of conserved protein motifs in NAC genes from broomcorn millet. a A phylogenetic tree was constructed by MEGA-X using the NJ method. b Structures of the 180 putative broomcorn millet NAC genes. Light green boxes indicate exons and black lines indicate introns. c Motif distribution of NAC proteins. Different motifs are indicated by different colours for motifs 1–20. The sequence information for each motif is provided in Additional file 1: Table S3Back to article page