論文 - 詳細
| RRC ID | 6279 |
|---|---|
| 著者 | Tsutsui T, Kato W, Asada Y, Sako K, Sato T, Sonoda Y, Kidokoro S, Yamaguchi-Shinozaki K, Tamaoki M, Arakawa K, Ichikawa T, Nakazawa M, Seki M, Shinozaki K, Matsui M, Ikeda A, Yamaguchi J. |
| タイトル | DEAR1, a transcriptional repressor of DREB protein that mediates plant defense and freezing stress responses in Arabidopsis. |
| ジャーナル | J Plant Res |
| Abstract |
Plants have evolved intricate mechanisms to respond and adapt to a wide variety of biotic and abiotic stresses in their environment. The Arabidopsis DEAR1 (DREB and EAR motif protein 1; At3g50260) gene encodes a protein containing significant homology to the DREB1/CBF (dehydration-responsive element binding protein 1/C-repeat binding factor) domain and the EAR (ethylene response factor-associated amphiphilic repression) motif. We show here that DEAR1 mRNA accumulates in response to both pathogen infection and cold treatment. Transgenic Arabidopsis overexpressing DEAR1 (DEAR1ox) showed a dwarf phenotype and lesion-like cell death, together with constitutive expression of PR genes and accumulation of salicylic acid. DEAR1ox also showed more limited P. syringae pathogen growth compared to wild-type, consistent with an activated defense phenotype. In addition, transient expression experiments revealed that the DEAR1 protein represses DRE/CRT (dehydration-responsive element/C-repeat)-dependent transcription, which is regulated by low temperature. Furthermore, the induction of DREB1/CBF family genes by cold treatment was suppressed in DEAR1ox, leading to a reduction in freezing tolerance. These results suggest that DEAR1 has an upstream regulatory role in mediating crosstalk between signaling pathways for biotic and abiotic stress responses. |
| 巻・号 | 122(6) |
| ページ | 633-43 |
| 公開日 | 2009-11-1 |
| DOI | 10.1007/s10265-009-0252-6 |
| PMID | 19618250 |
| MeSH | Amino Acid Sequence Arabidopsis / genetics Arabidopsis / metabolism Arabidopsis / physiology* Arabidopsis Proteins / genetics* Cloning, Molecular Freezing* Gene Expression Profiling Molecular Sequence Data Repressor Proteins / chemistry Repressor Proteins / physiology* Sequence Homology, Amino Acid Stress, Physiological* Transcription Factors / genetics* Transcription, Genetic / physiology* |
| IF | 2.185 |
| 引用数 | 92 |
| WOS 分野 | PLANT SCIENCES |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | Patent(IFI CLAIMS) |
| 各媒体での言及数の合計 | 2 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| シロイヌナズナ / 植物培養細胞・遺伝子 | pda02617 |