| Project/Area Number |
16K14751
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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 |
Plant molecular biology/Plant physiology
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
Ozeki Yoshihiro 東京農工大学, 工学(系)研究科(研究院), 教授 (50185592)
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| Research Collaborator |
MOMOSE Tadayuki 元都立国立高校, 教諭
HAMASAKI Sadahiro 奈良県農業研究開発センター, 総括研究員
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 紅葉 / クロモゲン / アントシアニン / カキ / オオカナダモ / クロロフィル / 落葉 / 老化 / モミジ |
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| Outline of Final Research Achievements |
It has been proposed for over a hundred years that autumn coloration is caused by increase of sucrose content in cells of plant leaves at lower temperature in fall. The other possible mechanism to induce autumn coloration has been assumed that the hypothetical substances, named to chromogens, may be synthesized in leaves at lower temperature in fall and may induce chlorophyll degradation and anthocyanin synthesis in leaves at lower temperature. Two putative chromogens were identified in aquatic plant, Egeria densa, to induce autumn coloration to detached leaves of E. densa. Two or more substances in the extract prepared from autumn leaves of persimmon can induce autumn coloration to the detached leaves of E. densa, indicating that chromogens may exist in autumn leaves of land tree plants to be able to induce autumn coloration in leaves.
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