Cloning and expression of UDP-glucose: flavonoid 3-O-glucosyltransferase gene in peach flowers

To elucidate the connection between flower coloration and the expression of genes associated with anthocyanin biosynthesis, a gene encoding UDP-glucose: flavonoid 3-O-glucosyltransferase (UFGT) was isolated, and the expression of the last four genes in the anthocyanin biosynthetic pathway during pea...

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Bibliographic Details
Published in:Genetics and molecular research 2014-12, Vol.13 (4), p.10067-10075
Main Authors: Wen, X C, Han, J, Leng, X P, Ma, R J, Jiang, W B, Fang, J G
Format: Article
Language:English
Subjects:
Anthocyanins - biosynthesis
Biosynthetic Pathways - genetics
Cloning, Molecular
Flowers - enzymology
Flowers - genetics
Gene Expression Regulation, Enzymologic
Gene Expression Regulation, Plant
Genes, Plant
Glucosyltransferases - genetics
Pigmentation - genetics
Prunus
Prunus - enzymology
Prunus - genetics
Transcription, Genetic
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Summary:To elucidate the connection between flower coloration and the expression of genes associated with anthocyanin biosynthesis, a gene encoding UDP-glucose: flavonoid 3-O-glucosyltransferase (UFGT) was isolated, and the expression of the last four genes in the anthocyanin biosynthetic pathway during peach flower development was determined. The nucleotide sequence of the peach UFGT (GenBank accession No. JX149550) is highly similar to its homologs in other plants. Total anthocyanin content initially increased during peach flower development, and then decreased over time. Expression of the four anthocyanin biosynthesis genes increased until the full-bloom stage, and then decreased during late florescence. Expression of F3H, DFR, and UFGT increased dramatically at the full-bloom stage, coinciding with an increase in anthocyanin concentration. The UFGT gene may not be the only gene of the anthocyanin pathway to be differentially controlled in red peach flower tissues. Further studies are needed to genetically and physiologically characterize these genes and enzymes in peach flowers and to gain a better understanding of their functions and relationships with flower coloration.
ISSN:1676-5680
1676-5680
DOI:10.4238/2014.December.4.1