Abstract
Arabidopsis VRN genes mediate vernalization, the process by which a long period of cold induces a mitotically stable state that leads to accelerated flowering during later development. VRN1 encodes a protein that binds DNA in vitro in a non-sequence-specific manner and functions in stable repression of the major target of the vernalization pathway, the floral repressor FLC. Overexpression of VRN1 reveals a vernalization-independent function for VRN1, mediated predominantly through the floral pathway integrator FT, and demonstrates that VRN1 requires vernalization-specific factors to target FLC.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Amino Acid Sequence
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Arabidopsis / anatomy & histology
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Arabidopsis / genetics*
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Arabidopsis / growth & development
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Arabidopsis / physiology*
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Arabidopsis Proteins / chemistry
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Arabidopsis Proteins / genetics*
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Arabidopsis Proteins / metabolism
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Arabidopsis Proteins / physiology*
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Base Sequence
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Cloning, Molecular
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DNA, Plant / genetics
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DNA, Plant / metabolism
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DNA-Binding Proteins / chemistry
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DNA-Binding Proteins / genetics*
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DNA-Binding Proteins / physiology*
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Down-Regulation
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Gene Expression Regulation, Plant
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Genes, Plant
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MADS Domain Proteins / genetics
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MADS Domain Proteins / metabolism
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Molecular Sequence Data
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Mutation
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Photoperiod
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Plant Proteins / genetics
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Plant Proteins / metabolism
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Plant Structures / anatomy & histology
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Plant Structures / physiology
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Plants, Genetically Modified
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Protein Binding
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Recombinant Fusion Proteins / metabolism
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Repressor Proteins*
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Temperature
Substances
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AGL20 protein, Arabidopsis
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Arabidopsis Proteins
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DNA, Plant
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DNA-Binding Proteins
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At5g10140 protein, Arabidopsis
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FT protein, Arabidopsis
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MADS Domain Proteins
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Plant Proteins
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Recombinant Fusion Proteins
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Repressor Proteins
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VRN1 protein, Arabidopsis