Fig. 3

Phylogenetic relationships, gene structure analysis, and motif distributions of S. italica bHLH genes. A Phylogenetic tree constructed using the neighbour-joining method with 1000 replicates for each node. B Exons and introns are indicated by yellow rectangles and grey lines, respectively. C Amino acid motifs in the SibHLH proteins (1–10) are represented by coloured boxes. The black lines indicate relative protein lengths