A Small Family ofMYB-Regulatory Genes Controls Floral Pigmentation Intensity and Patterning in the GenusAntirrhinum
Top Cited Papers
Open Access
- 10 March 2006
- journal article
- Published by Oxford University Press (OUP) in Plant Cell
- Vol. 18 (4) , 831-851
- https://doi.org/10.1105/tpc.105.039255
Abstract
The Rosea1, Rosea2, and Venosa genes encode MYB-related transcription factors active in the flowers of Antirrhinum majus. Analysis of mutant phenotypes shows that these genes control the intensity and pattern of magenta anthocyanin pigmentation in flowers. Despite the structural similarity of these regulatory proteins, they influence the expression of target genes encoding the enzymes of anthocyanin biosynthesis with different specificities. Consequently, they are not equivalent biochemically in their activities. Different species of the genus Antirrhinum, native to Spain and Portugal, show striking differences in their patterns and intensities of floral pigmentation. Differences in anthocyanin pigmentation between at least six species are attributable to variations in the activity of the Rosea and Venosa loci. Set in the context of our understanding of the regulation of anthocyanin production in other genera, the activity of MYB-related genes is probably a primary cause of natural variation in anthocyanin pigmentation in plants.Keywords
This publication has 82 references indexed in Scilit:
- Molecular evidence for naturalness of genera in the tribe Antirrhineae (Scrophulariaceae) and three independent evolutionary lineages from the New World and the OldÖsterreichische botanische Zeitschrift, 2004
- Mutations in thepale aleurone color1Regulatory Gene of theZea maysAnthocyanin Pathway Have Distinct Phenotypes Relative to the Functionally SimilarTRANSPARENT TESTA GLABRA1Gene inArabidopsis thaliana [W]Plant Cell, 2004
- Candidate gene analysis of anthocyanin pigmentation loci in the SolanaceaeTheoretical and Applied Genetics, 2003
- anthocyanin1 of Petunia Encodes a Basic Helix-Loop-Helix Protein That Directly Activates Transcription of Structural Anthocyanin GenesPlant Cell, 2000
- Maize anthocyanin regulatory gene pl is a duplicate of c1 that functions in the plant.Plant Cell, 1993
- Control of Pigment Biosynthesis Genes during Petal DevelopmentPlant Cell, 1993
- Molecular homology among members of the R gene family in maizeThe Plant Journal, 1993
- Allelic interactions at the nivea locus of Antirrhinum.Plant Cell, 1991
- Control of anthocyanin biosynthesis in flowers of Antirrhinum majusThe Plant Journal, 1991
- A Revised Medium for Rapid Growth and Bio Assays with Tobacco Tissue CulturesPhysiologia Plantarum, 1962