| Project/Area Number |
25514004
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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 | Yokohama City University |
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Principal Investigator |
Yamazaki Chiaki 横浜市立大学, 木原生物学研究所, 客員研究員 (30636189)
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| Co-Investigator(Kenkyū-buntansha) |
嶋田 幸久 横浜市立大学, 木原生物学研究所, 教授 (30300875)
中村 郁子 横浜市立大学, 木原生物学研究所, 助教 (40585858)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 重力応答 / シロイヌナズナ / ブラシノステロイド / 抗重力形態形成 / 植物ホルモン / 宇宙生物科学 |
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| Outline of Final Research Achievements |
Gravitropism is a plant's gravity response, which enables plants to orient their photosynthetic organs upward and to the sunlight. The mechanisms in the gravitropism have been studied extensively, and revealed to be regulated by polar transport of auxin. On the other hand, mechanical resistance is another gravity response distinct from gravitropism. Under hypergravity stimuli, plants increase the rigidity against the gravitational force. We reported that brassinosteroid determines stem rigidity and length of elongation zone that have capability to respond to gravistimulation. In this study, we revealed that brassinosteroid-dependent cell wall regulation is important for mechanical resistance of Arabidopsis inflorescence stems.
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