| Project/Area Number |
24620008
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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 |
宇宙生命学
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
UEDA Junichi 大阪府立大学, 理学(系)研究科, 教授 (40109872)
HASEGAWA Koji 筑波大学, 生命環境科学研究科(系), 名誉教授 (70094167)
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 重力形態形成 / 植物生理活性物質 / オーキシン / オーキシン極性移動 / 重力屈性 / 頂芽優勢 / フック形成 / 疑似微小重力 / 過重力 / 植物の成長・発達 / 天然生理活性物質 / 宇宙生命科学 |
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| Outline of Final Research Achievements |
Gravitational force on Earth is one of the major environmental factors affecting plant growth. A 3-dimensional (3D) clinostat as simulator of microgravity conditions in space or weightlessness has been available to clarify the effects of gravistimulation on Earth. Studies on regulatory mechanisms of growth by gravistimulation using 3D clinostat from the aspect of growth physiology and plant growth regulators revealed important roles of gravity in controlling hook development, apical dominance and tropism in pea seedlings, a possible involvement of changes in tissue tension in gravistimulated side of pea epicotyls in controlling gravitropism, and a possible involvement of growth inhibitor in opposite side of gravistimulation in pea epicotyls in relation to gravitropism. Furthermore, for chemical regulation of graviresponse several auxin polar transport inhibitors including a novel one from Arthemisia absinthium named artabolide were isolated and identified.
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