Publisher Correction: QTL mapping and molecular characterization of the classical D locus controlling seed and flower color in Linum usitatissimum (flax)

Abstract

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Fine-mapping of a putative glutathione S-transferase (GST) gene responsible for yellow seed colour in flax (Linum usitatissimum)

“…Polymeric proanthocyanidins (PA, or condensed tannins) are responsible for the brown seed coat colour in many species [ 1 ], including flax. Mutations in the genes of the PA biosynthetic pathway may result in yellow seed colour in flax, Arabidopsis and other species [ 2 – 6 ]. For example, in Arabidopsis a mutated glutathione synthase (GST), tt19-1 , cannot transport the colourless anthocyanidin quercetin-3-O-rhamnoside across the tonoplast membrane and, consequently, accumulation of PA in the vacuole does not occur [ 2 , 7 ].…”

“…In flax five gene alleles ( Y , b1 , b1 vg , d and g ), each individually responsible for yellow (or mottled) seed colour, have been observed and their genetics partially elucidated [ 8 ], however, the functional and genetic identity of some of these genes has only recently been studied. The location and identity of the mutated D gene in cultivar Bolley Golden was determined to be a flavonoid 3′5′ hydroxylase on Chr2 [ 5 , 6 ], and the dominant Y gene was found to be due to insertion of a transposon upstream of chalcone synthase (unpublished data). The mutated G gene was selected for fine mapping as it is one of the remaining known yellow seed coat coloured mutants and thought to be a single gene.…”