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| 文献 | ||
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| 著者 | Yang C., Liu X., Li D., Zhu X., Wei Z., Feng Z., Zhang L., He J., Mou C., Jiang L., Wan J. | |
| タイトル | OsLUGL is involved in the regulating auxin level and OsARFs expression in rice (Oryza sativa L.). | |
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Abstract: Specification of floral organ identity is critical for floral morphology and inflorescence architecture. Floral organ identity in plants is controlled by floral homeotic A/B/C/D/E-class genes. Although multiple genes regulate floral organogenesis, our understanding of the regulatory network remains fragmentary. Here, we characterized a rice floral organ gene KAIKOUXIAO (KKX), mutation of which produces an uncharacteristic open hull, abnormal seed and semi-sterility. KKX encodes a putative LEUNIG-like (LUGL) transcriptional regulator OsLUGL. OsLUGL is preferentially expressed in young panicles and its protein can interact with OsSEU, which functions were reported as an adaptor for LEUNIG. OsLUGL-OsSEU functions together as a transcriptional co-regulatory complex to control organ identity. SEP3 (such as OsMADS8) and AP1 (such as OsMADS18) serve as the DNA-binding partner of OsLUGL-OsSEU complex. Further studies indicated that OsMADS8 and OsMADS18 could bind to the promoter of OsGH3-8. The altered expression of OsGH3-8 might cause the increased auxin level and the decreased expression of OsARFs. Overall, our results demonstrate a possible pathway whereby OsLUGL-OsSEU-OsAP1-OsSEP3 complex as a transcriptional co-regulator by targeting the promoter of OsGH3-8, then affecting auxin level, OsARFs expression and thereby influencing floral development. These findings provide a valuable insight into the molecular functions of OsLUGL in rice floral development. |
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| 掲載誌 | Plant Sci. | |
| Country | China | |
| 刊数 | 288 | |
| ページ | 110239 | |
| 発刊年 | 2019 | |
| PubMed ID | 31521225 | |
| PubMed Central ID | - | |
| DOI | 10.1016/j.plantsci.2019.110239 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | GH3-8 MADS18 MADS24 RAP1A RAP1B YUCCA1 _ | |
| INSD | - | |
| 系統 |
野生イネ コアコレクション |
- |
| 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 | - | |
