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| 著者 | Olga N Danilevskaya, Hermon P., Hantke S., Michael G Muszynski, Kollipara K., Evgueni V Ananiev | |
| タイトル | Duplicated fie genes in maize: expression pattern and imprinting suggest distinct functions. | |
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Abstract: Two maize genes with predicted translational similarity to the Arabidopsis FIE (Fertilization-Independent Endosperm) protein, a repressor of endosperm development in the absence of fertilization, were cloned and analyzed. Genomic sequences of fie1 and fie2 show significant homology within coding regions but none within introns or 5' upstream. The fie1 gene is expressed exclusively in the endosperm of developing kernels starting at approximately 6 days after pollination. fie1 is an imprinted gene showing no detectable expression of the paternally derived fie1 allele during kernel development. Conversely, fie2 is expressed in the embryo sac before pollination. After pollination, its expression persists, predominantly in the embryo and at lower levels in the endosperm. The paternal fie2 allele is not expressed early in kernel development, but its transcription is activated at 5 days after pollination. fie2 is likely to be a functional ortholog of the Arabidopsis FIE gene, whereas fie1 has evolved a distinct function. The maize FIE2 and sorghum FIE proteins form a monophyletic group, sharing a closer relationship to each other than to the FIE1 protein, suggesting that maize fie genes originated from two different ancestral genomes. |
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| 掲載誌 | Plant Cell | |
| Country | USA | |
| 刊数 | 15(2) | |
| ページ | 425-38 | |
| 発刊年 | 2003 | |
| PubMed ID | 12566582 | |
| PubMed Central ID | 141211 | |
| DOI | - | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | FIE2 | |
| 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 | - | |
