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| 著者 | Jung,K.H., Han,M.J., Lee,Y.S., Kim,Y.W., Hwang,I., Kim,M.J., Kim,Y.K., Nahm,B.H. and An,G. | |
| タイトル | Rice undeveloped tapetum1 is a major regulator of early tapetum development. | |
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Abstract: The tapetum, the innermost of four sporophytic layers in the anther wall, comes in direct contact with the developing male gametophyte and is thought to play a crucial role in the development and maturation of microspores. Here, we report the identification of rice (Oryza sativa) Undeveloped Tapetum1 (Udt1), which is required for the differentiation of secondary parietal cells to mature tapetal cells. T-DNA or retrotransposon Tos17 insertions in the Udt1 gene caused male sterility. The anther walls and meiocytes of the mutants were normal during the early premeiosis stage, but their tapeta failed to differentiate and became vacuolated during the meiotic stage. In addition, meiocytes did not develop to microspores, and middle layer degeneration was inhibited. Consequently, the anther locules contained no pollen. The UDT1:green fluorescent protein fusion protein was localized to the nucleus. This, together with its homology with other basic helix-loop-helix proteins, suggests that UDT1 is a transcription factor. DNA microarray analysis identified 958 downregulated and 267 upregulated genes in the udt1-1 anthers, suggesting that Udt1 plays a major role in maintaining tapetum development, starting in early meiosis. |
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| 掲載誌 | Plant Cell | |
| Country | South Korea | |
| 刊数 | 17(10) | |
| ページ | 2705-2722 | |
| 発刊年 | 2005 | |
| PubMed ID | 16141453 | |
| PubMed Central ID | - | |
| DOI | 10.1105/tpc.105.034090 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | UDT1 | |
| INSD | AY953870 | |
| 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 | - | |
