Different Regulatory Regions Are Required for the Vernalization-Induced Repression of FLOWERING LOCUS C and for the Epigenetic Maintenance of Repression
| Autor: | Elizabeth S. Dennis, W. James Peacock, Candice C. Sheldon, Anna B. Conn |
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| Rok vydání: | 2002 |
| Předmět: |
Cell division
Arabidopsis Down-Regulation Mitosis Repressor MADS Domain Proteins Flowers Plant Science Regulatory Sequences Nucleic Acid Biology Gene Expression Regulation Plant Genes Reporter hemic and lymphatic diseases Flowering Locus C Epigenetics Promoter Regions Genetic Gene Psychological repression Glucuronidase Genetics Leucine Zippers Binding Sites Arabidopsis Proteins fungi Temperature food and beverages Cell Biology Vernalization Plants Genetically Modified Introns Regulatory sequence Mutation Research Article |
| Zdroj: | The Plant Cell. 14:2527-2537 |
| ISSN: | 1532-298X 1040-4651 |
| DOI: | 10.1105/tpc.004564 |
| Popis: | Vernalization, the promotion of flowering by a prolonged period of low temperature, results in repression of the floral repressor FLOWERING LOCUS C (FLC) and in early flowering. This repression bears the hallmark of an epigenetic event: the low expression state is maintained over many cell division cycles, but expression is derepressed in progeny. We show that the two stages of the response of FLC to vernalization, the repression of FLC and the maintenance of the repression during growth at normal temperatures after vernalization, are mediated through different regions of the FLC gene. Both promoter and intragenic regions are required for the responses. We also identify a 75-bp region in the FLC promoter that, in addition to intragenic sequences, is required for expression in nonvernalized plants. |
| Databáze: | OpenAIRE |
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