| Project/Area Number |
24580050
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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 | 一般 |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Kyoto Prefectural University |
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Principal Investigator |
SATOH Shigeru 京都府立大学, 生命環境科学研究科(系), 教授 (40108428)
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| Co-Investigator(Kenkyū-buntansha) |
MORITA Shigeto 京都府立大学, 大学院生命環境科学研究科, 講師 (20205637)
森田 重人 京都府立大学, 生命環境科学研究科(系), 講師 (20295637)
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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 |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | カーネーション / アブシシン酸 / ピリジンジカルボン酸 / 蕾の開花 / 花の老化 / 観賞期間 / エチレン / 花の開花と老化 / エチレン生成 / キシログルカンオリゴ糖 / パラチノース / 2,4-ピリジンジカルボン酸 / 雌ずい / ABA含量 / ABA生合成 / ABA受容体 |
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| Outline of Final Research Achievements |
At the onset of senescence of cut carnation flowers, the gynoecium produces a small amount of ethylene, which acts as a starter ethylene for the production of a large amount of ethylene from petals. We examined changes in the content of abscisic acid (ABA) and in the expression of genes for ABA biosynthesis and action in the flower tissues, mainly gynoecium and petals, with three carnation cultivars, which have marked differences in their senescence characteristics. We demonstrated that abscisic acid is the key factor which induces ethylene production in the gynoecium of carnation flowers undergoing senescence. Moreover, we found that pyridinedicarboxylic acid (PDCA) has a remarkable activity on carnation flower opening and senescence; that is, PDCA accelerated the opening of flower buds, promoted the gross flower opening, and retarded senescence, resulting in a remarkable extension of vase life of cut carnation flowers.
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