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| 文献 | ||
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| 著者 | Yang Y., Fu D., Zhu C., He Y., Zhang H., Liu T., Li X., Wu C. | |
| タイトル | The RING-Finger Ubiquitin Ligase HAF1 Mediates heading date 1 Degradation during Photoperiodic Flowering in Rice. | |
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Abstract: The photoperiodic response is one of the most important factors determining heading date in rice (Oryza sativa). Although rhythmic expression patterns of flowering time genes have been reported to fine-tune the photoperiodic response, posttranslational regulation of key flowering regulators has seldom been elucidated in rice. heading date 1 (Hd1) encodes a zinc finger transcription factor that plays a crucial role in the photoperiodic response, which determines rice regional adaptability. However, little is known about the molecular mechanisms of Hd1 accumulation during the photoperiod response. Here, we identify a C3HC4 RING domain-containing E3 Ubiquitin ligase, heading date Associated Factor 1 (HAF1), which physically interacts with Hd1. HAF1 mediates ubiquitination and targets Hd1 for degradation via the 26S proteasome-dependent pathway. The HAF1 mutant exhibits a later flowering heading date under both short-day and long-day conditions. In addition, the HAF1 Hd1 double mutant headed as late as Hd1 plants under short-day conditions but exhibited a heading date similar to HAF1 under long-day conditions, thus indicating that HAF1 may determine heading date mainly through Hd1 under short-day conditions. Moreover, high levels of Hd1 accumulate in HAF1. Our results suggest that HAF1 is essential to precise modulation of the timing of Hd1 accumulation during the photoperiod response in rice. |
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| 掲載誌 | Plant Cell | |
| Country | China | |
| 刊数 | ||
| ページ | ||
| 発刊年 | 2015 | |
| PubMed ID | 26296966 | |
| PubMed Central ID | - | |
| DOI | 10.1105/tpc.15.00320 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | EF1 HD3A HIP1 RFT1 SE1 | |
| 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 | - | |
