The molecular mechanism of devernalization in relation to FLC gene expression in Japanese radish
| Project/Area Number |
24658026
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Kyoto University |
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Principal Investigator |
DOI Motoaki 京都大学, (連合)農学研究科(研究院), 教授 (40164090)
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| Co-Investigator(Kenkyū-buntansha) |
HOSOKAWA Munetaka 京都大学, 大学院農学研究科, 准教授 (40301246)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 園芸学 / ダイコン / 春化 / 脱春化 / 分子機構 / RsFLC / RsFT / RsSOC1 / 園芸科学 / FLC / FT / 構成的花成促進経路 / 抗春化 |
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| Outline of Final Research Achievements |
Japanese radish (Raphanus sativus L.) is a seed-vernalization-type plant requiring chilling for flowering．It is also known that exposure of seeds to high temperature has a devernalization effect. The purpose of this study is to clarify the molecular aspects of vernalization and devernalization of Japanese radish by investigating the expressions of some flowering-related genes. In 'Hayabutori-syogoinn', the expression level of RsFLC decresesed with increased duration of chilling and thereafter the expression levels of RsFT and RsSOC1 increased prior to flowering. Exposure of vernalized seeds with 9 days' chilling to high temperature caused devernalization and the RsFLC level was restored a little. Close relations between vernalized or devernalized status and the expression level of RsFLC were observed in 'Hayabutori-syogoinn' and 'Wakayama', but in 'Tokinashi' the low expression levels of RsFLC after exposure to 18 days' chilling did not result in flowering.
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Report
(4 results)
Research Products
(1 results)
