2013 Fiscal Year Final Research Report
Homeostasis of Plant Mineral Nutrients and Growth- Modeling of Overall Regulation
| Project/Area Number |
21228002
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
FUJIWARA Toru 東京大学, 農学生命科学研究科, 教授 (80242163)
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| Project Period (FY) |
2009-05-11 – 2014-03-31
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| Keywords | シロイヌナズナ / 栄養感知 / 数理モデル / 予測 / 実証 / 低栄養適応 / トランスポーター局在 / 輸送制御 |
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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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[Journal Article] VvBOR1, the Grapevine Ortholog of AtBOR1, Encodes and Efflux Boron Transporter That is Differencially Expressed Throughout Reproductive Development of Vitis vinifera L2012
Author(s)
Perez-Castro, R., Kasai, K., Gainza-Cortes, F., Ruiz-Lara, S., Casaretto, J., Pena-Cortes, H., Tapia, J. and Fujiwara, T. Gonzalez E.
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Journal Title
Plant Cell Physiol
Volume: 53
Pages: 485-494
DOI
Peer Reviewed
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[Journal Article] Expression of the Arabidopsis Borate Efflux Transporter Gene, AtBOR4, in Rice Affects the Xylem Loading of Boron and Tolerance to Excess Boron2011
Author(s)
Kajikawa, M., Fujibe, T., Uraguchi, S., Miwa, K. Fujiwara, T.
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Journal Title
Biosci. Biotechnol. Biochem.
Volume: 75
Pages: 2421-2423
DOI
Peer Reviewed
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[Journal Article] Condensin II alleviates DNA damage and is essential for tolerance of B overload stress in Arabidopsis thaliana2011
Author(s)
Sakamoto, T., Tsujimoto-Inui, Y., Uraguchi, S., Yoshizumi, T., Matsunaga, S., Matsui, M., Umeda, M., Fukui, K. Fujiwara, T.
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Journal Title
Plant Cell
Volume: 23
Pages: 3533-46
DOI
Peer Reviewed
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[Journal Article] Boron-Dependent Degradation of NIP5 ; 1 mRNA for Acclimation to Excess Boron Conditions in Arabidopsis2011
Author(s)
Tanaka, M., Takano, J., Chiba, Y., Lombardo, F., Ogasawara, Y., Onouchi, H., Naito, S. and Fujiwara, T.
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Journal Title
Plant Cell
Volume: 23(9)
Pages: 3547-59
DOI
Peer Reviewed
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[Journal Article] Arabidopsis thaliana 26S Proteasome Subunits RPT2a and RPT5a Are Crucial for Zinc Deficiency-Tolerance2011
Author(s)
Sakamoto, T., Kamiya, T., Sako, K., Yamaguchi, J., Yamagami, M. and Fujiwara, T
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Journal Title
Biosci. Biotech. Biochem
Volume: 75
Pages: 561-567
DOI
Peer Reviewed
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