Functions of brassinosteroid in stress tolerance of rice
| Project/Area Number |
24780005
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Breeding science
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| Research Institution | Ishikawa Prefectural University |
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Principal Investigator |
SAKAMOTO Tomoaki 石川県立大学, 生物資源環境学部, 准教授 (00345183)
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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 |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | イネ / オーキシン / 突然変異体 / 発現制御 / ブラシノステロイド / ユビキチン化 / マイクロアレイ / U-box型E3リガーゼ |
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| Outline of Final Research Achievements |
The phytohormones auxin and brassinosteroid are both essential regulators of physiological and developmental processes, and it has been suggested that they act interdependently and synergistically. I showed that auxin stimulates brassinosteroid perception by regulating the amount of brassinosteroid receptors. Next, I found that genetic background influences brassinosteroid-related mutant phenotypes in rice and these phenomena are caused by a transposon insertion into the promoter of brassinosteroid receptor gene. Finally, I isolated a novel positive regulator of brassinosteroid signaling in rice. This protein encodes an U-box E3 ubiquitin ligase, and probably functions in interaction between brassinosteroid and another phytohormone.
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Report
(4 results)
Research Products
(10 results)
