Redox regulation of ethylene signal transduction pathway involved in the regulation of seed germination in rice
| Project/Area Number |
15K07400
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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 |
Applied biochemistry
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| Research Institution | Kyoto Prefectural University |
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Principal Investigator |
Morita Shigeto 京都府立大学, 生命環境科学研究科, 准教授 (20295637)
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| Project Period (FY) |
2015-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 種子 / 発芽 / 休眠 / エチレン / イネ / レドックス制御 |
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| Outline of Final Research Achievements |
Glutaredoxins (GRXs) function in the regulation of various cellular processes through redox regulation of proteins. In a previous study, I have found that a rice GRX isoform, OsGRXC2;2, is involved in the regulation of seed germination in rice. In this study, I examined the regulatory role of OsGRXC2;2 in germination using its overexpressing and knock-down lines. The results suggest that OsGRXC2;2 regulates seed dormancy and germination through phytohormones, ethylene and abscisic acid.
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| Academic Significance and Societal Importance of the Research Achievements |
植物の種子休眠と発芽は、作物の斉一な発芽や初期生長や、穀類種子の穂発芽に関わることから農業上重要な問題である。主要穀物であるイネは、コムギ、オオムギ等のイネ科主要穀物のモデルでもある。本研究の成果は、イネにおいてOsGRXC2;2による新規な発芽調節機構を明らかにし、穀類の種子生理の理解に貢献するものである。また一部の酒米品種やコムギ、オオムギにおいては穂発芽が問題となっていることから、本研究の成果はそれらの休眠性・穂発芽耐性の向上に寄与すると期待される。
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Report
(6 results)
Research Products
(13 results)
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[Journal Article] Expression of a rice glutaredoxin in aleurone layers of developing and mature seeds: subcellular localization and possible functions in antioxidant defense2015
Author(s)
Shigeto Morita, Yuki Yamashita, Masayoshi Fujiki, Rie Todaka, Yuri Nishikawa, Ayaka Hosoki, Chisato Yabe, Jun’ichi Nakamura, Kazuyoshi Kawamura, I Nengah Suwastika, Masa H. Sato, Takehiro Masumura, Yasunari Ogihara, Kunisuke Tanaka, Shigeru Satoh
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Journal Title
Planta
Volume: 242
Issue: 5
Pages: 1195-1206
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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