Molecular Characterization of AREB1 Involved in Dehydration and Salt Responses in Arabidopsis thaliana
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- Fujita Yasunari
- Biol. Resources, JIRCAS DRF,JSPS
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- Fujita Miki
- GSC, RIKEN
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- Seki Motoaki
- GSC, RIKEN Plant Mol. Biol., RIKEN
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- Shinozaki Kazuo
- GSC, RIKEN Plant Mol. Biol., RIKEN
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- Shinozaki Kazuko
- Biol. Resources, JIRCAS
Bibliographic Information
- Other Title
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- シロイヌナズナの乾燥・塩ストレス応答性転写因子AREB1の機能解析
Abstract
To elucidate the signal transduction pathways between the initial drought / high-salinity-stress signal and gene expressions in Arabidopsis, we have analyzed the regulation of gene expression of rd29B in vegetative tissue. We have shown that ABA Responsive Elements (ABRE) play a crucial role in the dehydration-responsive induction of rd29B as regulatory cis-elements, and that bZIP transcription factors, ABA Responsive Element Binding Proteins (AREB), function as transcriptional activators in the ABA-inducible expression of rd29B. <br> In this study, to identify domains of the AREB1 protein involved in ABA-inducible transcriptional activation of rd29B, we analyzed trans-activation activity of AREB1 using a transient assay of Arabidopsis protoplasts. The analysis of mutants in this assay revealed that the N-terminal region can function as a transcriptional activation domain. Furthermore, the results of collective analyses suggested that conformational change in AREB1 via ABA-induced modification is required for the gene expression of rd29B.
Journal
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- Plant and Cell Physiology Supplement
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Plant and Cell Physiology Supplement 2003 (0), 392-392, 2003
The Japanese Society of Plant Physiologists
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Details 詳細情報について
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- CRID
- 1390282680606422016
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- NII Article ID
- 130006990173
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed