Analysis of the mechanism to prevent the inactivation of Rubisco by oxygen oxidation
| Project/Area Number |
26450081
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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 |
Plant nutrition/Soil science
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 光合成 / ルビスコ / 炭酸固定 / BSD2 / CYO2 / 酸化還元 / Rubisco |
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| Outline of Final Research Achievements |
Ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco) is the key enzyme for atmospheric CO2 fixation. The Arabidopsis bsd2 mutant showed a significant reduction in photosynthetic capacity and was unable to grow autotrophically. BSD2 directly interacts with Rubisco, and recombinant BSD2 could reduce the oxidized form of Rubisco in vitro via disulfide reductase activity. A role for BSD2 in maintaining Rubisco activity was further supported in Arabidopsis BSD2-overexpression lines where Rubisco activation status and photosynthetic activity were higher than wild type. Our results demonstrate that BSD2 is key in the mechanisms that regulates the reactivation of oxidized Rubisco, thereby maintaining functional photosynthesis in plants.
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Report
(4 results)
Research Products
(17 results)
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[Journal Article] Allantoin, a stress-related purine metabolite, can activate jasmonate signaling in a MYC2-regulated and abscisic acid-dependent manner2016
Author(s)
Takagi, H., Ishiga Y., Watanabe W., Konishi T., Egusa M., Akiyoshi N., Matsuura T., Mori I. C., Hirayama T., Kaminaka H., Shimada H. and Sakamoto A
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Journal Title
J. Ext. Bot.
Volume: 67
Issue: 8
Pages: 2519-2532
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] The purine metabolite allantoin can activate the MYC2-modulated JA-signaling pathway in an ABA-dependent manner2015
Author(s)
Takagi H, Ishiga Y, Egusa M, Watanabe S, Konishi T, Akiyoshi K, Matsuura T, Mori, I. C, Hirayama T, Shimada H, Kaminaka H, Sakamoto A,
Organizer
Plant Biology 2015
Place of Presentation
Mineapolis, USA
Year and Date
2015-07-26
Related Report
Int'l Joint Research
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