Genome sequence of the ornamental plant Aquilegia vulgaris reveals the flavonoid biosynthesis gene repertoire
Friedhoff, R.; Wolff, K.; Pucker, B.
Show abstract
Aquilegia vulgaris is a widespread ornamental plant. The species is well known for its extensive variation of different flower colors and can even be considered as a model species for the evolution of flower morphology. Anthocyanins are a major pigment group responsible for pigmentation of flowers in A. vulgaris and many plant species. Here, we report a highly continuous genome sequence of an European Aquilegia vulgaris plant displaying purple flowers and a genome sequence of a plant displaying white flowers. The corresponding annotation facilitates research on flower color and morphology evolution. Long-read alignments revealed different structural variants in an anthocyanidin synthase (ANS) gene, crucial for pigment biosynthesis, that could explain the white flower phenotype. Candidate genes for all steps in the core anthocyanidin biosynthesis were identified. The identification of a flavonoid 3,5 hydroxylase (F35H), a gene essential for the biosynthesis of bluish delphinidin derivatives, corroborates previous reports about metabolites and transcripts in A. vulgaris.
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