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| 著者 | Zhuang H., Hong-Lei Wang, Zhang T., Xiao-Qin Zeng, Chen H., Zhong-Wei Wang, Zhang J., Zheng H., Tang J., Ying-Hua Ling, Zheng-Lin Yang, Guang-Hua He, Yun-Feng Li | |
| タイトル | <i>NONSTOP GLUMES1</i> Encodes a C2H2 Zinc Finger Protein That Regulates Spikelet Development in Rice. | |
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Abstract: The spikelet is an inflorescence structure unique to grasses. The molecular mechanisms underlying spikelet development and evolution are unclear. In this study, we characterized three allelic recessive mutants in rice (<i>Oryza sativa</i>): <i>nonstop glumes 1-1</i> (<i>nsg1-1</i>), <i>nsg1-2</i>, and <i>nsg1-3</i> In these mutants, organs such as the rudimentary glume, sterile lemma, palea, lodicule, and filament were elongated and/or widened, or transformed into lemma- and/or marginal region of the palea-like organs. <i>NSG1</i> encoded a member of the C2H2 zinc finger protein family and was expressed mainly in the organ primordia of the spikelet. In the <i>nsg1-1</i> mutant spikelet, <i>LHS1 DL</i>, and <i>MFO1</i> were ectopically expressed in two or more organs, including the rudimentary glume, sterile lemma, palea, lodicule, and stamen, whereas <i>G1</i> was downregulated in the rudimentary glume and sterile lemma. Furthermore, the NSG1 protein was able to bind to regulatory regions of <i>LHS1</i> and then recruit the corepressor TOPLESS-RELATED PROTEIN to repress expression by downregulating histone acetylation levels of the chromatin. The results suggest that <i>NSG1</i> plays a pivotal role in maintaining organ identities in the spikelet by repressing the expression of <i>LHS1</i>, <i>DL</i>, and <i>MFO1.</i> |
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| 掲載誌 | Plant Cell | |
| Country | China | |
| 刊数 | 32(2) | |
| ページ | 392-413 | |
| 発刊年 | 2020 | |
| PubMed ID | 31806675 | |
| PubMed Central ID | 7008478 | |
| DOI | 10.1105/tpc.19.00682 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | ASP1 DL G1 LHS1 MFO1 NSG1 WD40-12 WD40-66 | |
| 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 | - | |
