論文 - 詳細
| RRC ID | 60874 |
|---|---|
| 著者 | Higuchi Y, Hisamatsu T. |
| タイトル | CsTFL1, a constitutive local repressor of flowering, modulates floral initiation by antagonising florigen complex activity in chrysanthemum. |
| ジャーナル | Plant Sci |
| Abstract |
Chrysanthemums require repeated cycles of short-day (SD) photoperiod for successful anthesis, but their vegetative state is strictly maintained under long-day (LD) or night-break (NB) conditions. We have previously demonstrated that photoperiodic flowering of a wild diploid chrysanthemum (Chrysanthemum seticuspe f. boreale) is controlled by a pair of systemic floral regulators, florigen (CsFTL3) and anti-florigen (CsAFT), produced in the leaves. Here, we report the functional characterisation of a local floral regulator, CsTFL1, a chrysanthemum orthologue of TERMINAL FLOWER 1 gene in Arabidopsis. Constitutive expression of CsTFL1 in C. seticuspe (CsTFL1-ox) resulted in extremely late flowering under SD and prevented up-regulation of floral meristem identity genes in shoot tips and leaves. Bimolecular fluorescence complementation assay showed that both CsTFL1 and CsFTL3 interacted with CsFDL1, a bZIP transcription factor FD homologue, in the nucleus. The transient gene expression assay indicated that CsTFL1 suppresses flowering by directly antagonising the flower inductive activity of the CsFTL3-CsFDL1 complex. Our results suggest that strict maintenance of vegetative state under non-inductive photoperiod is achieved by the coordinated action of both the systemic floral inhibitor and local floral inhibitor CsTFL1, which is constitutively expressed in shoot tips. |
| 巻・号 | 237 |
| ページ | 1-7 |
| 公開日 | 2015-8-1 |
| DOI | 10.1016/j.plantsci.2015.04.011 |
| PII | S0168-9452(15)00111-9 |
| PMID | 26089146 |
| MeSH | Chrysanthemum / genetics* Chrysanthemum / growth & development Chrysanthemum / radiation effects Florigen / antagonists & inhibitors* Flowers / genetics* Flowers / growth & development Flowers / radiation effects Gene Expression Regulation, Developmental Gene Expression Regulation, Plant* Light Meristem / genetics Meristem / growth & development Meristem / radiation effects Photoperiod Plant Growth Regulators / antagonists & inhibitors* Plant Leaves / genetics Plant Leaves / radiation effects Plant Proteins / genetics Plant Proteins / metabolism Plant Shoots / genetics Plant Shoots / growth & development Plant Shoots / radiation effects Plants, Genetically Modified Repressor Proteins / genetics* Repressor Proteins / metabolism Up-Regulation |
| IF | 3.785 |
| 引用数 | 12 |
| 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 | X(Twitter) |
| 各媒体での言及数の合計 | 1 |
| 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 | |
| 広義キク属 | NIFS-3 |