Figure 6. AOP genomic structure.

The genomic structure and causality of the major AOP2/AOP3 haplotypes are illustrated. Pink arrows show the AOP2 gene while yellow arrows represent AOP3. The black arrows represent the direction of transcription from the AOP2 promoter as defined in the Col-0 reference genome. Its position does not change in any of the regions. A-F represent the different structures. The black lines in C and F represent theoretical positions of independent variants creating premature stop codons. The GSL chemotype for each haplotype is listed to the right with the number of the accessions in brackets. The maps show the geographic distribution of the accessions from each structure.

Figure 6—figure supplement 1. AOP phylogeny.

Separate phylogenies of AOP2 (A) and AOP3 (B) across Arabidopsis thaliana accessions. The trees are rooted by the matching gene in Arabidopsis lyrata, which is not shown because of distance. Tree tips are colored based on accessions’ chemotype. The first column of each heatmap represents the dominant chemotype’s identity. The second column of each heatmap represents the AOP functionality: pink for alkenyl (AOP2 dominant), orange for hydroxy (AOP3 dominant) and green for MSO (null). The third column represents the accessions’ geographic location: dark green for the north and dark pink for the south. The named accessions represent the haplotypes described in Figure 6.