The Arabidopsis thaliana vernalization response requires a polycomb-like protein complex that also includes VERNALIZATION INSENSITIVE 3
| Autor: | Craig C. Wood, Chris A. Helliwell, Elizabeth S. Dennis, Masumi Robertson, Greg Tanner, W. James Peacock |
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| Rok vydání: | 2006 |
| Předmět: |
Recombinant Fusion Proteins
Molecular Sequence Data Arabidopsis Polycomb-Group Proteins MADS Domain Proteins Biology Gene Expression Regulation Plant hemic and lymphatic diseases Flowering Locus C Polycomb-group proteins Arabidopsis thaliana Amino Acid Sequence RNA Messenger MADS-box Homeodomain Proteins Genetics Multidisciplinary Arabidopsis Proteins fungi Genetic Complementation Test food and beverages Nuclear Proteins Vernalization Biological Sciences biology.organism_classification eye diseases Cold Temperature DNA-Binding Proteins Molecular Weight Repressor Proteins Phenotype Vernalization response Multiprotein Complexes Epigenetic Repression Mutation Chromatography Gel sense organs Carrier Proteins Transcription Factors |
| Zdroj: | Proceedings of the National Academy of Sciences. 103:14631-14636 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.0606385103 |
| Popis: | In Arabidopsis thaliana , the promotion of flowering by cold temperatures, vernalization, is regulated via a floral-repressive MADS box transcription factor, FLOWERING LOCUS C (FLC). Vernalization leads to the epigenetic repression of FLC expression, a process that requires the polycomb group (PcG) protein VERNALIZATION 2 (VRN2) and the plant homeodomain protein VERNALIZATION INSENSITIVE 3 (VIN3). We demonstrate that the repression of FLC by vernalization requires homologues of other Polycomb Repressive Complex 2 proteins and VRN2. We show in planta that VRN2 and VIN3 are part of a large protein complex that can include the PcG proteins FERTILIZATION INDEPENDENT ENDOSPERM, CURLY LEAF, and SWINGER. These findings suggest a single protein complex is responsible for histone deacetylation at FLC and histone methylation at FLC in vernalized plants. The abundance of the complex increases during vernalization and declines after plants are returned to higher temperatures, consistent with the complex having a role in establishing FLC repression. |
| Databáze: | OpenAIRE |
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