Floral asymmetry involves an interplay between TCP and MYB transcription factors in Antirrhinum
| Autor: | Rosemary Carpenter, Lucy Copsey, Susie B. Corley, Enrico Coen |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
DNA
Plant media_common.quotation_subject Molecular Sequence Data Flowers Genes Plant Models Biological Asymmetry Proto-Oncogene Proteins c-myb Gene Expression Regulation Plant Antirrhinum Floral symmetry MYB Amino Acid Sequence RNA Messenger Cloning Molecular Gene Transcription factor In Situ Hybridization Body Patterning Plant Proteins media_common Genetics Multidisciplinary Base Sequence Sequence Homology Amino Acid biology fungi food and beverages Gene Expression Regulation Developmental Biological Sciences Meristem biology.organism_classification Biological Evolution eye diseases RNA Plant Mutation Developmental biology Transcription Factors |
| Zdroj: | Proceedings of the National Academy of Sciences. 102:5068-5073 |
| ISSN: | 1091-6490 0027-8424 |
| Popis: | To understand how genes control floral asymmetry, we have isolated and analyzed the role of the RADIALIS ( RAD ) gene in Antirrhinum . We show that the RAD gene encodes a small MYB-like protein that is specifically expressed in the dorsal region of developing flowers. RAD has a single MYB-like domain that is closely related to one of the two MYB-like domains of DIV, a protein that has an antagonistic effect to RAD on floral development. Interactions between RAD and other genes indicate that floral asymmetry depends on the interplay between two pairs of transcription factors. First, a pair of TCP proteins is expressed in dorsal regions of the floral meristem, leading to the activation of RAD in the dorsal domain. The RAD MYB-like protein then antagonizes the related DIV MYB-like protein, preventing DIV activity in dorsal regions. In addition to its role in dorsal regions, RAD acts nonautonomously on lateral regions either directly, through RAD protein movement, or indirectly, through a signaling molecule. |
| Databáze: | OpenAIRE |
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