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| 著者 | Umehara M., Hanada A., Yoshida S., Akiyama K., Arite T., Noriko Takeda-Kamiya, Magome H., Kamiya Y., Shirasu K., Yoneyama K., KYOZUKA J., Yamaguchi S. | |
| タイトル | Inhibition of shoot branching by new terpenoid plant hormones. | |
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Abstract: shoot branching is a major determinant of plant architecture and is highly regulated by endogenous and environmental cues. Two classes of hormones, auxin and cytokinin, have long been known to have an important involvement in controlling shoot branching. Previous studies using a series of mutants with enhanced shoot branching suggested the existence of a third class of hormone(s) that is derived from carotenoids, but its chemical identity has been unknown. Here we show that levels of strigolactones, a group of terpenoid lactones, are significantly reduced in some of the branching mutants. Furthermore, application of strigolactones inhibits shoot branching in these mutants. Strigolactones were previously found in root exudates acting as communication chemicals with parasitic weeds and symbiotic arbuscular mycorrhizal fungi. Thus, we propose that strigolactones act as a new hormone class-or their biosynthetic precursors-in regulating above-ground plant architecture, and also have a function in underground communication with other neighbouring organisms. |
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| 掲載誌 | Nature | |
| Country | Japan | |
| 刊数 | 455(7210) | |
| ページ | 195-200 | |
| 発刊年 | 2008 | |
| PubMed ID | 18690207 | |
| PubMed Central ID | - | |
| DOI | 10.1038/nature07272 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | D10 D17 D3 | |
| INSD | - | |
| 系統 |
野生イネ コアコレクション |
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| 突然変異系統(遺伝研 Collection) | - | |
| 種子不稔系統 | - | |
| 致死変異体系統 | - | |
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組織別発生段階 - 突然変異系統(遺伝子) |
- | |
| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
