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| 著者 | Luo M,Platten D,Chaudhury A,Peacock WJ,Dennis ES | |
| タイトル | Expression, imprinting, and evolution of rice homologs of the polycomb group genes. | |
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Abstract: Polycomb group proteins (PcG) play important roles in epigenetic regulation of gene expression. Some core PcG proteins, such as Enhancer of Zeste (E(z)), Suppressor of Zeste (12) (Su(z)12), and Extra Sex Combs (ESC), are conserved in plants. The rice genome contains two E(z)-like genes, OsiEZ1 and OsCLF, two homologs of Su(z)12, OsEMF2a and OsEMF2b, and two ESC-like genes, OsFIE1 and OsFIE2. OsFIE1 is expressed only in endosperm; the maternal copy is expressed while the paternal copy is not active. Other rice PcG genes are expressed in a wide range of tissues and are not imprinted in the endosperm. The two E(z)-like genes appear to have duplicated before the separation of the dicots and monocots; the two homologs of Su(z)12 possibly duplicated during the evolution of the Gramineae and the two ESC-like genes are likely to have duplicated in the ancestor of the grasses. No homologs of the Arabidopsis seed-expressed PcG genes MEA and FIS2 were identified in the rice genome. We have isolated T-DNA insertion lines in the rice homologs of three PcG genes. There is no autonomous endosperm development in these T-DNA insertion lines. One line with a T-DNA insertion in OsEMF2b displays pleiotropic phenotypes including altered flowering time and abnormal flower organs, suggesting important roles in rice development for this gene. |
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| 掲載誌 | Mol Plant | |
| Country | Australia | |
| 刊数 | 2(4) | |
| ページ | 711-23 | |
| 発刊年 | 2009 | |
| PubMed ID | 19825651 | |
| PubMed Central ID | - | |
| DOI | 10.1093/mp/ssp036 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | CLF EMF2A EMF2B FIE1 FIE2 IEZ1 | |
| 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 | - | |
