The molecular mechanism underlying nitrogen homeostasis in plants
Project/Area Number |
17K07705
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Plant nutrition/Soil science
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Research Institution | Nagoya University (2018-2019) Institute of Physical and Chemical Research (2017) |
Principal Investigator |
Kiba Takatoshi 名古屋大学, 生命農学研究科, 准教授 (20532097)
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Project Period (FY) |
2017-04-01 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 窒素栄養 / 恒常性 / 窒素欠乏 / 転写制御 / 窒素栄養恒常性 / NIGT1 / リン欠乏 / 欠乏応答 / 転写因子 / 窒素飢餓 / 窒素恒常性 / 窒素不足 / 植物栄養 |
Outline of Final Research Achievements |
Nitrogen homeostasis is crucial for plants to survive under fluctuating nutrient environments. It is maintained through the coordination of nitrogen-starvation and nitrogen-sufficiency responses. In this study, we identified a group of transcription factors, named NIGT1s, as a balancing factor between nitrogen-starvation and nitrogen-sufficiency responses. In addition, we revealed that NIGT1s act as a hub for integrating nitrogen and phosphorus signals to optimize nitrogen-phosphorus nutritional balance.
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Academic Significance and Societal Importance of the Research Achievements |
本研究では、古くから研究されてきた植物の窒素栄養応答の仕組みについて新たな分子メカニズムを明らかにした。また植物が複数の栄養応答を統御するメカニズムも解明しており、学術的意義は大きいと考える。 近年窒素やリン肥料の過剰な使用が、コスト高を招いているだけでなく深刻な環境問題をも引き起こしており、世界的に低インプット型持続的農業への移行が求められている。本研究成果は、野生種植物の高効率栄養獲得と利用のメカニズムの一端を明らかにしたものであり、低インプット型持続的農業に適した優良栽培作物創出につながると期待される。
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Report
(4 results)
Research Products
(31 results)
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[Journal Article] Harnessing symbiotic plant-fungus interactions to unleash hidden forces from extreme plant ecosystems2020
Author(s)
Perez-Alonso M.M., Guerrero-Galan, C., Scholz, S.S., Kiba, T., Sakakibara, H., Ludwig-Muller, J., Krapp, A., Oelmuller, R., Vicente-Carbajosa, J., Pollmann, S.
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Journal Title
Journal of Experimental Botany
Volume: 54
Issue: 13
Pages: 137-142
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Repression of nitrogen-starvation responses by members of the Arabidopsis GARP-type transcription factor NIGT1/HRS1 subfamily.2018
Author(s)
Kiba, T., Inaba, J., Kudo, T., Ueda, N., Konishi, M., Mitsuda, N, Takiguchi, Y., Kondou, Y., Yoshizumi, T., Ohme-Takagi, M., Matsui, M., Yano, K., Yanagisawa, S., and Sakakibara, H.
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Journal Title
Plant Cell
Volume: 30
Issue: 4
Pages: 925-945
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] SUPERMAN regulates floral whorl boundaries through control of auxin biosynthesis.2018
Author(s)
Xu, Y., Prunet, N., Gan, E-S., Wang, Y., Stewart, D., Wellmer, F., Huang, J., Yamaguchi, N., Tatsumi, Y., Kojima, M., Kiba, T., Sakakibara, H., Jack, T.P., Meyerowitz, E.M., Ito, T.
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Journal Title
EMBO Journal
Volume: -
Issue: 11
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Chromatin-mediated feed-forward auxin biosynthesis in floral meristem determinacy.2018
Author(s)
Yamaguchi, N., Huang, J., Tatsumi, Y., Abe, M., Sugano, S. S., Kojima, M., Takebayashi, Y., Kiba, T., Yokoyama, R., Nishitani, K., Sakakibara, H., and Ito, T.
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Journal Title
Nature Commun.
Volume: 9
Issue: 1
Pages: 5290-5290
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Inter-species hormonal control of host root morphology by parasitic plants.2017
Author(s)
Spallek, T., Melnyk, C.W., Wakatake, T., Zhang, J., Sakamoto, Y., Kiba, T., Yoshida, S., Matsunaga, S., Sakakibara, H., *Shirasu, K.
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Journal Title
Proc. Natl. Acad. Sci. USA.
Volume: 印刷中
Issue: 20
Pages: 5283-5288
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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