2014 Fiscal Year Final Research Report
Analysis of high CO2 response on the metabolic network consisting of C and N metabolic pathways with wild-type and genetically modified Arabidopsis plants
| Project Area | Comprehensive studies of plant responses to high CO2 world by an innovative consortium of ecologists and molecular biologists |
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| Project/Area Number |
21114004
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Biological Sciences
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2009-04-01 – 2015-03-31
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| Keywords | 高二酸化炭素 / 窒素同化 / メタボローム解析 |
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| Outline of Final Research Achievements |
To investigate modulations in plant metabolism by the combined action of elevated atmospheric CO2 concentration and other nutritional factors, we performed targeted metabolomic analysis using Arabidopsis plants grown under 24 different conditions where the CO2 concentration, amounts and species of nitrogen source, and light intensity were modified. Our results indicate that both the biosynthesis of diverse metabolites and growth are promoted in proportion to the CO2 concentration at a wide range of CO2 level, although ammonium is a prominent factor determining metabolic status, while the CO2 concentration is not. Ammonium-induced metabolic alterations were differently modified by high concentrations of CO2, implying that increases in CO2 concentration may differently influence plant metabolism depending on the nitrogen nutrient conditions. We also performed targeted metabolomic analysis with Arabidopsis plants whose ability for nitrogen assimilation was genetically modified.
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| Free Research Field |
植物生化学
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