Publications [#230219] of Mark D. Rausher
search PubMed.Papers Published
- Zufall, RA; Rausher, MD, The genetic basis of a flower-color polymorphism in the common,
Journal of Heredity, vol. 94 no. 6
(2003),
pp. 442-448 [doi] .
(last updated on 2024/08/25)Abstract:
The common morning glory (Ipomoea purpurea) is highly polymorphic for flower color. Part of this phenotypic variation is due to allelic variation at the P locus. This locus determines whether flowers will be purple or pink, where purple is dominant to pink. We have determined that the anthocyanin biosynthetic gene flavonoid 3'-hydroxylase (f3'h) corresponds to the P locus. In the pink allele of f3'h there is a large insertion in the third exon, which results in the production of a truncated transcript. This shortened transcript produces a nonfunctional F3'H enzyme, resulting in the production of pink flowers rather than purple. In addition, we describe a polymerase chain reaction (PCR)-based assay that can be used to determine the genotype of a plant at this locus.