Fig. 2

Phylogenetic relationships, gene structure and architecture of the conserved protein motifs in 18 genes from S. italica. a The phylogenetic tree was constructed based on the full-length sequences of SiSPL proteins. b Exon–intron structure of SiSPL genes. Lines represent introns, boxes represent exons, and domains are color-coded. Number indicates the phase of the corresponding intron. c Amino acid motifs in the SiSPL proteins (1–10) are represented by colored boxes. Black lines indicate relative protein lengths. Sequence information for each motif is provided in Additional file Table S2