2016 Fiscal Year Final Research Report
Molecular mechanism of the floral initiation by florigen and its application to breeding
| Project/Area Number |
26520307
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 特設分野 |
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| Research Field |
Food Cycle Research
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| Research Institution | Kyoto University |
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Principal Investigator |
Ohki Izuru 京都大学, 工学研究科, 特定研究員 (80418574)
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| Project Period (FY) |
2014-07-18 – 2017-03-31
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| Keywords | X線結晶解析 / 植物 / 植物ホルモン / 花成 |
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| Outline of Final Research Achievements |
In higher plants, florigen is a mobile hormone that determines the flowering time, but its regulatory mechanism of flowering remains unclear. In this study, we focused on an anti-florigen, which suppresses floral induction antagonizing with florigen, to clarify the role in flowering regulation. From structural and biochemical analysis, anti-florigen was found to form a stable complex with florigen receptor on target promoters and inhibited a formation of florigen-receptor complex. The bindings of florigen and anti-florigen to the receptor were exchangeable, suggesting that the balance of the two proteins is important for determining the timing of floral transition.
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| Free Research Field |
構造生物学
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