These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Genetic control of dihydroflavonol 4-reductase gene expression in Petunia hybrida.
    Author: Huits HS, Gerats AG, Kreike MM, Mol JN, Koes RE.
    Journal: Plant J; 1994 Sep; 6(3):295-310. PubMed ID: 7920718.
    Abstract:
    The functions of four loci (An1, An2, An4, and An6) which control pigmentation in flowers of Petunia hybrida have been characterized. Linkage-analysis and molecular complementation experiments showed that the An6 locus contains the structural dfrA gene, encoding the enzyme dihydroflavonol 4-reductase (DFR). Analysis of gus gene expression driven by the dfrA promoter in transgenic plants showed that the dfrA promoter is highly active in the flower corolla, the anthers and seeds and, at a lower level, in ovules and the flower stem. These data are discussed in relation to the expression of other pigmentation genes and the accumulation pattern of anthocyanins. The expression of the drfA-gus transgene was dependent on the genes an1 (in every tissue), an2 (in the flower limb only) and an4(in anthers), demonstrating that these genes encode regulatory factors that control drfA promoter activity.
    [Abstract] [Full Text] [Related] [New Search]