The regulation of anthocyanin synthesis in the wheat pericarp

Bread wheat producing grain in which the pericarp is purple is considered to be a useful source of dietary anthocyanins. The trait is under the control of the Pp-1 homoealleles (mapping to each of the group 7 chromosomes) and Pp3 (on chromosome 2A). Here, TaMyc1 was identified as a likely candidate...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2014-12, Vol.19 (12), p.20266-20279
Main Authors: Shoeva, Olesya Y, Gordeeva, Elena I, Khlestkina, Elena K
Format: Article
Language:English
Subjects:
Alleles
Amino Acid Sequence
Anthocyanins - biosynthesis
candidate gene
Chromosome Mapping
Chromosomes
Gene Dosage
Gene Order
Genes
Genes, myc
Genes, Plant
Genetic Loci
Genotype
Molecular Sequence Data
nucleotide sequence
Phenotype
Phylogeny
purple grain pericarp
Quantitative Trait, Heritable
Regulation
regulatory gene
Sequence Alignment
transcription
Transcription, Genetic
Triticum - genetics
Triticum - metabolism
Triticum aestivum
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Summary:Bread wheat producing grain in which the pericarp is purple is considered to be a useful source of dietary anthocyanins. The trait is under the control of the Pp-1 homoealleles (mapping to each of the group 7 chromosomes) and Pp3 (on chromosome 2A). Here, TaMyc1 was identified as a likely candidate for Pp3. The gene encodes a MYC-like transcription factor. In genotypes carrying the dominant Pp3 allele, TaMyc1 was strongly transcribed in the pericarp and, although at a lower level, also in the coleoptile, culm and leaf. The gene was located to chromosome 2A. Three further copies were identified, one mapping to the same chromosome arm as TaMyc1 and the other two mapping to the two other group 2 chromosomes; however none of these extra copies were transcribed in the pericarp. Analysis of the effect of the presence of combinations of Pp3 and Pp-1 genotype on the transcription behavior of TaMyc1 showed that the dominant allele Pp-D1 suppressed the transcription of TaMyc1.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules191220266