Martin C et al. 1991
- Authors:
Martin C. Prescott A. Mackay S. Bartlett J. Vrijlandt E.
- Title:
Control of anthocyanin biosynthesis in flowers of Antirrhinum majus.
- Reference location:
Plant Journal. 1(1):37-49, 1991 Jul.
- Abstract:
The intensity and pattern of anthocyanin biosynthesis in Antirrhinum
flowers is controlled by several genes. We have isolated six cDNA clones
encoding enzymes in the pathway committed to flavonoid biosynthesis and
used these to assay how the regulatory genes that modify colour pattern
affect the expression of biosynthetic genes. The biosynthetic genes of the
later part of the pathway appear to be co-ordinately regulated by two
genes, Delila (Del), and Eluta (El), while the early steps (which also
lead to flavone synthesis) are controlled differently. This division of
control is not the same as control of anthocyanin biosynthesis by the
regulatory genes R (S) and C1 in maize aleurone, and may result from the
adaptive significance of different flavonoids in flowers and seeds,
reflecting their attractiveness to insects and mammals respectively. El
and del are probably involved in transcriptional control and both genes
appear to be able to repress expression of some biosynthetic genes and
activate expression of others.
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