Studies on a blue-light sensing system of fern Adiantum PHY3 photoreceptor
Project/Area Number |
23570061
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Plant molecular biology/Plant physiology
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Research Institution | Tokyo Metropolitan University |
Principal Investigator |
KANEGAE Takeshi 首都大学東京, 理工学研究科, 准教授 (70264588)
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Project Period (FY) |
2011 – 2013
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Project Status |
Completed (Fiscal Year 2013)
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Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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Keywords | 光受容体 / フィトクロム / フォトトロピン / ホウライシダ / 光屈性 |
Research Abstract |
Adiantum photoreceptor PHY3 acts as both a phytochrome and a phototropin. PHY3 includes "Photosensory Core Module" (PCM) of phytochromes and PHY3 PCM could perceive not only red- but also blue-light signals. To study blue-light sensing molecular mechanisms of PHY3 PCM, I substituted PHY3 PCM to Arabidopsis phytochrome PCMs. These chimeric photoreceptors can induce blue-light dependent hypocotyl phototropic response, however, no significant red-light induced hypocotyl bending toward the light source was observed. Hence, PHY3 PCM could not be interchangeable to a corresponding region of either phyA or phyB of Arabidopsis. I compared PHY3 PCM amino acid sequence to other phytochrome PCMs and found the PHY3 specific gaps in PCM region. These results suggest that such a PHY3 characteristic gaps in PCM could confer blue-light sensing ability to PHY3 PCM region.
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Report
(4 results)
Research Products
(8 results)
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[Journal Article] Blue-light regulation of ZmPHOT1 and ZmPHOT2 gene expression and the possible involvement of Zmphot1 in phototropism in maize coleoptiles2014
Author(s)
Suzuki, H., Okamoto, A., Kojima, A., Nishimura, T., Takano, M., Kagawa, T., Kadota, A., Kanegae, T., Koshiba, T.
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Journal Title
Planta
Volume: (in press)
Issue: 2
Pages: 251-261
DOI
Related Report
Peer Reviewed
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