論文 - 詳細
| RRC ID | 33532 |
|---|---|
| 著者 | Yan J, Aboshi T, Teraishi M, Strickler SR, Spindel JE, Tung CW, Takata R, Matsumoto F, Maesaka Y, McCouch SR, Okumoto Y, Mori N, Jander G. |
| タイトル | The Tyrosine Aminomutase TAM1 Is Required for β-Tyrosine Biosynthesis in Rice. |
| ジャーナル | Plant Cell |
| Abstract |
Non-protein amino acids, often isomers of the standard 20 protein amino acids, have defense-related functions in many plant species. A targeted search for jasmonate-induced metabolites in cultivated rice (Oryza sativa) identified (R)-β-tyrosine, an isomer of the common amino acid (S)-α-tyrosine in the seeds, leaves, roots, and root exudates of the Nipponbare cultivar. Assays with 119 diverse cultivars showed a distinct presence/absence polymorphism, with β-tyrosine being most prevalent in temperate japonica cultivars. Genetic mapping identified a candidate gene on chromosome 12, which was confirmed to encode a tyrosine aminomutase (TAM1) by transient expression in Nicotiana benthamiana and in vitro enzyme assays. A point mutation in TAM1 eliminated β-tyrosine production in Nipponbare. Rice cultivars that do not produce β-tyrosine have a chromosome 12 deletion that encompasses TAM1. Although β-tyrosine accumulation was induced by the plant defense signaling molecule jasmonic acid, bioassays with hemipteran and lepidopteran herbivores showed no negative effects at physiologically relevant β-tyrosine concentrations. In contrast, root growth of Arabidopsis thaliana and other tested dicot plants was inhibited by concentrations as low as 1 μM. As β-tyrosine is exuded into hydroponic medium at higher concentrations, it may contribute to the allelopathic potential of rice. |
| 巻・号 | 27(4) |
| ページ | 1265-78 |
| 公開日 | 2015-4-1 |
| DOI | 10.1105/tpc.15.00058 |
| PII | tpc.15.00058 |
| PMID | 25901084 |
| PMC | PMC4558700 |
| MeSH | Gene Expression Regulation, Plant Oryza / enzymology* Oryza / metabolism* Plant Proteins / genetics Plant Proteins / metabolism* Tyrosine / biosynthesis* |
| IF | 9.618 |
| 引用数 | 19 |
| WOS 分野 | PLANT SCIENCES BIOCHEMISTRY & MOLECULAR BIOLOGY CELL 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 | X(Twitter) |
| 各媒体での言及数の合計 | 4 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 1.0 |
| リソース情報 | |
| イネ | Induced Mutation Lines |