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| 文献 | ||
|---|---|---|
| 著者 | Itoh, J.-I., Kitano, H., Matsuoka, M. and Nagato, Y. | |
| タイトル | SHOOT ORGANIZATION genes regulate shoot apical meristem organization and the pattern of leaf primordium initiation in rice. | |
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Abstract: The mechanism regulating the pattern of leaf initiation was analyzed by using shoot organization (sho) mutants derived from three loci (SHO1, SHO2, and SHO3). In the early vegetative phase, sho mutants show an increased rate of leaf production with random phyllotaxy. The resulting leaves are malformed, threadlike, or short and narrow. Their shoot apical meristems are relatively low and wide, that is, flat shaped, although their shape and size are highly variable among plants of the same genotype. Statistical analysis reveals that the shape of the shoot meristem rather than its size is closely correlated with the variations of plastochron and phyllotaxy. Rapid and random leaf production in sho mutants is correlated with the frequent and disorganized cell divisions in the shoot meristem and with a reduction of expression domain of a rice homeobox gene, OSH1. These changes in the organization and behavior of the shoot apical meristems suggest that sho mutants have fewer indeterminate cells and more determinate cells than wild type, with many cells acting as leaf founder cells. Thus, the SHO genes have an important role in maintaining the proper organization of the shoot apical meristem, which is essential for the normal initiation pattern of leaf primordia. |
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| 掲載誌 | Plant Cell | |
| Country | Japan | |
| 刊数 | 12 | |
| ページ | 2161-2174 | |
| 発刊年 | 2000 | |
| PubMed ID | 11090216 | |
| PubMed Central ID | - | |
| DOI | 10.1105/tpc.12.11.2161 | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | SHO1 SHO2 SHO3 | |
| INSD | - | |
| 系統 |
野生イネ コアコレクション |
- |
| 突然変異系統(遺伝研 Collection) | - | |
| 種子不稔系統 | - | |
| 致死変異体系統 | lem１ | |
|
組織別発生段階 - 突然変異系統(遺伝子) |
sho2 sho1 | |
| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
