| Budget Amount *help |
¥208,910,000 (Direct Cost: ¥160,700,000、Indirect Cost: ¥48,210,000)
Fiscal Year 2013: ¥37,440,000 (Direct Cost: ¥28,800,000、Indirect Cost: ¥8,640,000)
Fiscal Year 2012: ¥37,440,000 (Direct Cost: ¥28,800,000、Indirect Cost: ¥8,640,000)
Fiscal Year 2011: ¥37,440,000 (Direct Cost: ¥28,800,000、Indirect Cost: ¥8,640,000)
Fiscal Year 2010: ¥37,440,000 (Direct Cost: ¥28,800,000、Indirect Cost: ¥8,640,000)
Fiscal Year 2009: ¥59,150,000 (Direct Cost: ¥45,500,000、Indirect Cost: ¥13,650,000)
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| Research Abstract |
This project on the mineral nutrient homeostasis in plants includes several different aspects for the understanding of mechanisms of homeostasis. For the nutrients with relatively limited understanding, we isolated novel Arabidopsis mutants defective in acclimation to low nutrient conditions, identified responsible genes and characterized the functions of the gene products. Novel genes were found for Ca, Mg, Mn, Cu and Mo. In-depth analyses of the homeostasis mechanism of boron were also conducted. Before the initiation of the project, we identified several boron transporters for uptake and translocation. In this project we revealed novel aspects of regulation including boron sensing by ribosome-RNA complexes. We also constructed mathematical model to comprehensively understand the overall regulation mechanisms. Based on the model we predicted boron accumulation pattern in the root of Arabidopsis and the prediction was confirmed by experimental examination.
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