Journal article
Lycopene-ε-cyclase (e-LCY3A) is functionally associated with quantitative trait loci for flour b* colour on chromosome 3A in wheat (Triticum aestivum L.)
Molecular Breeding, Vol.31(3), pp.737-741
2013
Abstract
Flour b* colour is an important grain quality parameter for specific wheat end-products. The genetic control of b* colour in Australian wheat accessions is controlled by quantitative trait loci (QTL) on chromosomes 3A, 3B, 7A and 7B accumulating lutein, a compound of the carotenoid biosynthetic pathway. The relationship between lutein accumulation and flour b* colour provides an opportunity to identify sequence variants of genes encoding enzymes from the biosynthetic pathway that may control trait variation. This study identified a single nucleotide polymorphism (SNP) in the gene encoding lycopene-ε-cylcase on chromosome 3A (e-LYC3A) between two wheat accessions Ajana and WAWHT2074, identifying two alleles, e-LYC3Aa and e-LYC3Ab, respectively. e-LCY3Ab was present in 62. 5 % of the wheat accessions analysed. A highly significant (P < 0. 01) association with QTL on chromosome 3A in two mapping populations indicated that e-LYC3A is functionally associated with b* colour variation in some Australian wheat accessions. The SNP induced a serine/glycine substitution at amino acid residue 123 and a subtle change in protein folding at amino acid residue 119. The e-LYC3A SNP may be considered along with other alleles and genes on homoeologous group 3 and 7 chromosomes for selecting desirable flour b* colour variation in marker-assisted breeding.
Details
- Title
- Lycopene-ε-cyclase (e-LCY3A) is functionally associated with quantitative trait loci for flour b* colour on chromosome 3A in wheat (Triticum aestivum L.)
- Authors/Creators
- A.C. Crawford (Author/Creator) - Murdoch UniversityM.G. Francki (Author/Creator) - Department of Agriculture and Food Western Australia
- Publication Details
- Molecular Breeding, Vol.31(3), pp.737-741
- Publisher
- Kluwer Academic Publishers
- Identifiers
- 991005544115407891
- Copyright
- © 2012 Springer Science+Business Media Dordrecht
- Murdoch Affiliation
- State Agricultural Biotechnology Centre
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
- Web Of Science research areas
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Plant & Animal Science