論文 - 詳細
| RRC ID | 51237 |
|---|---|
| 著者 | Ohkubo Y, Tanaka M, Tabata R, Ogawa-Ohnishi M, Matsubayashi Y. |
| タイトル | Shoot-to-root mobile polypeptides involved in systemic regulation of nitrogen acquisition. |
| ジャーナル | Nat Plants |
| Abstract |
Plants uptake nitrogen (N) from the soil mainly in the form of nitrate. However, nitrate is often distributed heterogeneously in natural soil. Plants, therefore, have a systemic long-distance signalling mechanism by which N starvation on one side of the root leads to a compensatory N uptake on the other N-rich side1,2. This systemic N acquisition response is triggered by a root-to-shoot mobile peptide hormone, C-TERMINALLY ENCODED PEPTIDE (CEP), originating from the N-starved roots3,4, but the molecular nature of the descending shoot-to-root signal remains elusive. Here, we show that phloem-specific polypeptides that are induced in leaves upon perception of root-derived CEP act as descending long-distance mobile signals translocated to each root. These shoot-derived polypeptides, which we named CEP DOWNSTREAM 1 (CEPD1) and CEPD2, upregulate the expression of the nitrate transporter gene NRT2.1 in roots specifically when nitrate is present in the rhizosphere. Arabidopsis plants deficient in this pathway show impaired systemic N acquisition response accompanied with N-deficiency symptoms. These fundamental mechanistic insights should provide a conceptual framework for understanding systemic nutrient acquisition responses in plants. |
| 巻・号 | 3 |
| ページ | 17029 |
| 公開日 | 2017-3-20 |
| DOI | 10.1038/nplants.2017.29 |
| PII | nplants201729 |
| PMID | 28319056 |
| MeSH | Anion Transport Proteins / metabolism* Arabidopsis / genetics* Arabidopsis / metabolism Arabidopsis Proteins / genetics* Arabidopsis Proteins / metabolism Gene Expression Regulation, Plant* Glutaredoxins / genetics* Glutaredoxins / metabolism Nitrogen / metabolism* Plant Roots / metabolism* Plant Shoots / metabolism* Up-Regulation |
| IF | 13.256 |
| 引用数 | 104 |
| 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 | X(Twitter) |
| 各媒体での言及数の合計 | 40 |
| 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 | pst11057 pst18898 |