論文 - 詳細
| RRC ID | 613 |
|---|---|
| 著者 | Dezar CA, Gago GM, Gonzalez DH, Chan RL. |
| タイトル | Hahb-4, a sunflower homeobox-leucine zipper gene, is a developmental regulator and confers drought tolerance to Arabidopsis thaliana plants. |
| ジャーナル | Transgenic Res |
| Abstract |
Homeodomain-leucine zipper proteins constitute a family of transcription factors found only in plants. Hahb-4 is a member of Helianthus annuus (sunflower) subfamily I. It is regulated at the transcriptional level by water availability and abscisic acid. In order to establish if this gene plays a functional role in drought responses, transgenic Arabidopsis thaliana plants that overexpress Hahb-4 under the control of the 35S Cauliflower Mosaic Virus promoter were obtained. Transformed plants show a specific phenotype: they develop shorter stems and internodes, rounder leaves and more compact inflorescences than their non-transformed counterparts. Shorter stems and internodes are due to a lower rate in cell elongation rather than to a stop in cell division. Transgenic plants were more tolerant to water stress conditions, showing improved development, a healthier appearance and higher survival rates than wild-type plants. Indeed, either under normal or drought conditions, they produce approximately the same seed weight per plant as wild-type plants under normal growth conditions. Plants transformed with a construct that bears the Hahb-4 promoter fused to gusA show reporter gene expression in defined cell-types and developmental stages and are induced by drought and abscisic acid. Since Hahb-4 is a transcription factor, we propose that it may participate in the regulation of the expression of genes involved in developmental responses of plants to desiccation. |
| 巻・号 | 14(4) |
| ページ | 429-40 |
| 公開日 | 2005-8-1 |
| DOI | 10.1007/s11248-005-5076-0 |
| PMID | 16201409 |
| MeSH | Arabidopsis / genetics* Arabidopsis / physiology Arabidopsis Proteins / genetics Arabidopsis Proteins / metabolism Crops, Agricultural / genetics Crops, Agricultural / physiology DNA, Plant / isolation & purification Disasters Gene Expression Regulation, Plant Genes, Homeobox / physiology* Genes, Plant Helianthus / genetics Homeodomain Proteins Leucine Zippers / genetics* Phenotype Plant Growth Regulators / genetics* Plants, Genetically Modified / genetics Promoter Regions, Genetic RNA, Plant / isolation & purification RNA, Plant / metabolism Transcription Factors |
| IF | 1.856 |
| 引用数 | 90 |
| WOS 分野 | BIOCHEMICAL RESEARCH METHODS BIOTECHNOLOGY & APPLIED MICROBIOLOGY BIOCHEMISTRY & MOLECULAR BIOLOGY |
| 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 | 13 |
| 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 | pda01352 pda07022 |