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. 2019 Aug 8;18(2):479–490. doi: 10.1111/pbi.13213

Figure 7.

Figure 7

Evolution of the RLL2 gene. (a) Distance tree of the RLL2 homologs from different Lactuca species. A neighbour‐joining (NJ) tree was constructed for RLL2 using DNA sequences containing part of exon II, part of exon III and all of intron II. The three genes from S1 are marked by red triangles, and RLL2B_Y37 is indicated by a circle. Bootstrap values are percentages from 1000 replicates. Values lower than 65 are not shown. The RLL2 homologs amplified from an accession are named with the accession number followed by the species name. (b) The evolution of the RLL2 locus in Lactuca. I, II and III refer to the three clades in (a). The mutation at the promoter of the gene (in red) in clade II in some cultivars led to its accelerated expression. Represented genotypes are listed on the left.