論文 - 詳細
| RRC ID | 36463 |
|---|---|
| 著者 | Nagasawa N, Miyoshi M, Sano Y, Satoh H, Hirano H, Sakai H, Nagato Y. |
| タイトル | SUPERWOMAN1 and DROOPING LEAF genes control floral organ identity in rice. |
| ジャーナル | Development |
| Abstract |
We analyzed recessive mutants of two homeotic genes in rice, SUPERWOMAN1 (SPW1) and DROOPING LEAF (DL). The homeotic mutation spw1 transforms stamens and lodicules into carpels and palea-like organs, respectively. Two spw1 alleles, spw1-1 and spw1-2, show the same floral phenotype and did not affect vegetative development. We show that SPW1 is a rice APETALA3 homolog, OsMADS16. In contrast, two strong alleles of the dl locus, drooping leaf-superman1 (dl-sup1) and drooping leaf-superman2 (dl-sup2), cause the complete transformation of the gynoecium into stamens. In these strong mutants, many ectopic stamens are formed in the region where the gynoecium is produced in the wild-type flower and they are arranged in a non-whorled, alternate pattern. The intermediate allele dl-1 (T65), results in an increase in the number of stamens and stigmas, and carpels occasionally show staminoid characteristics. In the weakest mutant, dl-2, most of the flowers are normal. All four dl alleles cause midrib-less drooping leaves. The flower of the double mutant, spw1 dl-sup, produces incompletely differentiated organs indefinitely after palea-like organs are produced in the position where lodicules are formed in the wild-type flower. These incompletely differentiated organs are neither stamens nor carpels, but have partial floral identity. Based on genetic and molecular results, we postulate a model of stamen and carpel specification in rice, with DL as a novel gene controlling carpel identity and acting mutually and antagonistically to the class B gene, SPW1. |
| 巻・号 | 130(4) |
| ページ | 705-18 |
| 公開日 | 2003-2-1 |
| DOI | 10.1242/dev.00294 |
| PMID | 12506001 |
| MeSH | Amino Acid Sequence Base Sequence Flowering Tops / physiology* Flowers / genetics Flowers / growth & development Gene Expression Regulation, Plant Homeodomain Proteins / genetics* Homeodomain Proteins / metabolism Molecular Sequence Data Mutation Oryza / genetics* Plant Proteins / genetics* Plant Proteins / metabolism |
| IF | 5.611 |
| 引用数 | 267 |
| WOS 分野 | DEVELOPMENTAL BIOLOGY |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | Patent(IFI CLAIMS) |
| 各媒体での言及数の合計 | 9 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| イネ | Induced mutation lines |