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| 著者 | Song X., Lu Z., Yu H., Shao G., Xiong J., Meng X., Jing Y., Liu G., Xiong G., Duan J., Yao X.F., Liu C.M., Li H., Wang Y., Li J. | |
| タイトル | IPA1 functions as a downstream transcription factor repressed by D53 in strigolactone signaling in rice. | |
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Abstract: Strigolactones (SLs), a group of carotenoid derived terpenoid lactones, are root-to-shoot phytohormones suppressing shoot branching by inhibiting the outgrowth of axillary buds. DWARF 53 (D53), the key repressor of the SL signaling pathway, is speculated to regulate the downstream transcriptional network of the SL response. However, no downstream transcription factor targeted by D53 has yet been reported. Here we report that Ideal Plant Architecture 1 (IPA1), a key regulator of the plant architecture in rice, functions as a direct downstream component of D53 in regulating tiller number and SL-induced gene expression. We showed that D53 interacts with IPA1 in vivo and in vitro and suppresses the transcriptional activation activity of IPA1. We further showed that IPA1 could directly bind to the D53 promoter and plays a critical role in the feedback regulation of SL-induced D53 expression. These findings reveal that IPA1 is likely one of the long-speculated transcription factors that act with D53 to mediate the SL-regulated tiller development in rice. |
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| 掲載誌 | Cell Res. | |
| Country | China | |
| 刊数 | 27(9) | |
| ページ | 1128-1141 | |
| 発刊年 | 2017 | |
| PubMed ID | 28809396 | |
| PubMed Central ID | - | |
| DOI | 10.1038/cr.2017.102 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | D53 WFP | |
| 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 | - | |
