2015 Fiscal Year Final Research Report
Studies on the mechanism of graviresponses in plants from the aspect of plant growth regulators and growth physiology
| 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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| 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 |
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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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| Free Research Field |
宇宙植物科学
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