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| 著者 | Utsunomiya Y. , Samejima C. , Takayanagi Y. , Izawa Y. , Yoshida T. , Sawada Y. , Fujisawa Y. , Kato H. , Iwasaki Y. | |
| タイトル | Suppression of the rice heterotrimeric G?protein beta-subunit gene, RGB1, causes dwarfism and browning of internodes and lamina joint regions. | |
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Abstract: In the present study, we investigated the function of the heterotrimeric G protein β-subunit (Gβ) gene (RGB1) in rice. RGB1 knock-down lines were generated in the wild type and d1-5, a mutant deficient for the heterotrimeric G protein α-subunit (Gα) gene (RGA1). Both transgenic lines showed browning of the lamina joint regions and nodes that could be attributed to a reduction of RGB1 function, as the abnormality was not observed in d1-5. The RGB1 knock-down lines generated in d1-5 were shorter, suggesting RGB1 to be a positive regulator of cellular proliferation, in addition to RGA1. The number of sterile seeds also increased in both RGB1 knock-down lines. These results suggest that Gβﾎｳ and Gα cooperatively function in cellular proliferation and seed fertility. We discuss the potential predominant role of RGB1 in G protein signaling in rice. |
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| 掲載誌 | Plant J. | |
| Country | Japan | |
| 刊数 | 67(5)) | |
| ページ | 907-16 | |
| 発刊年 | 2011 | |
| PubMed ID | 21585570 | |
| PubMed Central ID | - | |
| DOI | - | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | D1 RGB1 | |
| 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 | - | |
