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| 文献 | ||
|---|---|---|
| 著者 | Yamaguchi,T., Nagasawa,N., Kawasaki,S., Matsuoka,M., Nagato,Y. and Hirano,H.Y. | |
| タイトル | The YABBY Gene DROOPING LEAF Regulates Carpel Specification and Midrib Development in Oryza sativa. | |
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Abstract: In this article, we report that carpel specification in the Oryza sativa (rice) flower is regulated by the floral homeotic gene DROOPING LEAF (DL) that is distinct from the well-known ABC genes. Severe loss-of-function mutations of DL cause complete homeotic transformation of carpels into stamens. Molecular cloning reveals that DL is a member of the YABBY gene family and is closely related to the CRABS CLAW (CRC) gene of Arabidopsis thaliana. DL is expressed in the presumptive region (carpel anlagen), where carpel primordia would initiate, and in carpel primordia. These results suggest that carpel specification is regulated by DL in rice flower development. Whereas CRC plays only a partial role in carpel identity, DL may have been recruited to have the more essential function of specifying carpels during the evolution of rice. We also show that DL interacts antagonistically with class B genes and controls floral meristem determinacy. In addition, severe and weak dl alleles fail to form a midrib in the leaf. The phenotypic analysis of dl mutants, together with analyses of the spatial expression patterns and ectopic expression of DL, demonstrate that DL regulates midrib formation by promoting cell proliferation in the central region of the rice leaf. |
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| 掲載誌 | Plant Cell | |
| Country | Japan | |
| 刊数 | 16(2) | |
| ページ | 500-509 | |
| 発刊年 | 2004 | |
| PubMed ID | 14729915 | |
| PubMed Central ID | - | |
| DOI | 10.1105/tpc.018044 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | DL | |
| INSD | AB106553 AB106554 | |
| 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 | - | |
