論文 - 詳細
| RRC ID | 50494 |
|---|---|
| 著者 | Ube N, Nishizaka M, Ichiyanagi T, Ueno K, Taketa S, Ishihara A. |
| タイトル | Evolutionary changes in defensive specialized metabolism in the genus Hordeum. |
| ジャーナル | Phytochemistry |
| Abstract |
Plants have developed defensive specialized metabolites over the course of evolution. In the genus Hordeum, which includes the important cereal crop barley, specialized metabolites such as hordatines, benzoxazinones, and gramine have been identified. Hordeum species are classified into four clades, H, Xu, Xa, and I. The presence or absence of defensive specialized metabolites was analyzed in representative Hordeum species that included all of the four clades. In the H clade, Hordeum vulgare accumulated hordatines but not benzoxazinones, whereas H. bulbosum accumulated neither compound. Some accessions in the H clade accumulated gramine. Species in the clades I and Xa accumulated benzoxazinones without hordatines. In H. murinum, a Xu clade species, neither hordatines nor benzoxazinones were detected. Two hitherto undescribed compounds were found to commonly accumulate in H. bulbosum in the H clade and H. murinum in the Xu clade. On the basis of spectroscopic analyses, they were identified as dehydrodimers of feruloylagmatine and were designated murinamides A and B. Radical coupling reactions with feruloylagmatine as a substrate by peroxidase afforded murinamides A and B. These compounds showed antifungal activities against Bipolaris sorokiniana and Fusarium asiaticum, indicating their defensive roles. Because hordatines are also dehydrodimers of hydroxycinnamic acid amides (HCAAs) of agmatine, both the H and Xu clade species are considered to accumulate the same class of compounds. Thus, when the H/Xu clades split from the I/Xa clades during evolution, the defensive metabolites shifted from benzoxazinones to dehydrodimers of agmatine HCAAs plus gramine in the H/Xu clades. |
| 巻・号 | 141 |
| ページ | 1-10 |
| 公開日 | 2017-9-1 |
| DOI | 10.1016/j.phytochem.2017.05.004 |
| PII | S0031-9422(17)30196-6 |
| PMID | 28535420 |
| MeSH | Alkaloids / genetics Alkaloids / metabolism Benzoxazines / metabolism Coumaric Acids / metabolism Evolution, Molecular* Hordeum / genetics Hordeum / metabolism* Indole Alkaloids Phytochemicals / genetics Phytochemicals / metabolism* |
| IF | 3.044 |
| 引用数 | 3 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
|
| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 1 |
| 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 | |
| オオムギ | オオムギ |