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Fig. 3 | BMC Plant Biology

Fig. 3

From: The evolutionary history of the sucrose synthase gene family in higher plants

Fig. 3

Proposed intron/exon structures of three ancestral SUS genes in angiosperms. Based on the intron/exon structures and the exon length of the 96 angiosperm SUS genes (Additional file 2: Figure S2; Additional file 6: Table S1), we reconstructed the intron/exon schematic structures of the three ancestral SUS genes in angiosperm. Blue boxes denote exons within coding regions, and the gray lines connecting them represent introns. We used the intron/exon structure of the Sobic.010G072300.1, AmTr_v1.0_scaffold00106.5, and AmTr_v1.0_scaffold00044.21 to represent the intron/exon schematic structure of angiosperm ancestral SUS I, II and III gene, respectively. Purple numbers under the blue boxes represent the sizes (bp) of corresponding conserved exons. Red numbers on the upper left of the gray lines represent the intron phase of corresponding introns. The length of the gray lines does not represent the actual sizes of the introns

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