| Budget Amount *help |
¥111,930,000 (Direct Cost: ¥86,100,000、Indirect Cost: ¥25,830,000)
Fiscal Year 2013: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2012: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2011: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2010: ¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2009: ¥30,810,000 (Direct Cost: ¥23,700,000、Indirect Cost: ¥7,110,000)
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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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