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| 文献 | ||
|---|---|---|
| 著者 | Wang,E., Wang,J., Zhu,X., Hao,W., Wang,L., Li,Q., Zhang,L., He,W., Lu,B., Lin,H., Ma,H., Zhang,G. and He,Z. | |
| タイトル | Control of rice grain-filling and yield by a gene with a potential signature of domestication | |
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Abstract: Grain-filling, an important trait that contributes greatly to grain weight, is regulated by quantitative trait loci and is associated with crop domestication syndrome. However, the genes and underlying molecular mechanisms controlling crop grain-filling remain elusive. Here we report the isolation and functional analysis of the rice GIF1 (GRAIN INCOMPLETE FILLING 1) gene that encodes a cell-wall invertase required for carbon partitioning during early grain-filling. The cultivated GIF1 gene shows a restricted expression pattern during grain-filling compared to the wild rice allele, probably a result of accumulated mutations in the gene's regulatory sequence through domestication. Fine mapping with introgression lines revealed that the wild rice GIF1 is responsible for grain weight reduction. Ectopic expression of the cultivated GIF1 gene with the 35S or rice Waxy promoter resulted in smaller grains, whereas overexpression of GIF1 driven by its native promoter increased grain production. These findings, together with the domestication signature that we identified by comparing nucleotide diversity of the GIF1 loci between cultivated and wild rice, strongly suggest that GIF1 is a potential domestication gene and that such a domestication-selected gene can be used for further crop improvement. |
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| 掲載誌 | Nat Genet | |
| Country | China | |
| 刊数 | 40(11) | |
| ページ | 1370-1374 | |
| 発刊年 | 2008 | |
| PubMed ID | 18820698 | |
| PubMed Central ID | - | |
| DOI | 10.1038/ng.220 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | GIF1 | |
| INSD | EU095553 EU095554 EU095555 EU095556 EU095557 EU095558 EU095559 EU095560 EU095561 EU095562 EU095563 EU095564 EU095565 EU095566 EU095567 EU095568 EU095569 EU095570 EU095571 EU095572 EU095573 EU095574 EU095575 EU095576 EU095577 EU095578 EU095579 EU095580 EU095581 EU095582 EU095583 EU095584 EU095585 EU095586 EU095587 EU095588 EU095589 EU095590 EU095591 EU095592 EU095593 EU095594 EU095595 EU095596 | |
| 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) |
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| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
