Fig. 2

Phylogenetic relationships, gene structure and architecture of conserved protein motifs in NAC genes from Tartary buckwheat. a The phylogenetic tree was constructed based on the full-length sequences of Tartary buckwheat NAC proteins using Geneious R11 software. b Exon-intron structure of Tartary buckwheat NAC genes. Green boxes indicate untranslated 5′- and 3′-regions; yellow boxes indicate exons; black lines indicate introns. The NAM domains are highlighted by red boxes. The number indicates the phases of the corresponding introns. c The motif composition of Tartary buckwheat NAC proteins. The motifs, numbered 1–10, are displayed in different colored boxes. The sequence information for each motif is provided in Additional file 2. The length of the protein can be estimated using the scale at the bottom