Molecular mechanism of seed maturation, dormancy and germination using viviparous mutants
Project/Area Number |
21570054
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Plant molecular biology/Plant physiology
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Research Institution | Japan International Research Center for Agricultural Sciences |
Principal Investigator |
NAKASHIMA Kazuo 独立行政法人国際農林水産業研究センター, 生物資源・利用領域, 主任研究員 (90343772)
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Project Period (FY) |
2009 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Keywords | 穂発芽 / アブシシン酸 / タンパク質リン酸化酵素 / SnRK2 / bZIP型転写因子 |
Research Abstract |
Abscisic acid(ABA) is an important phytohormone regulating various physiological processes including seed maturation, dormancy and germination. SRK2D, SRK2E and SRK2I are redundant ABA-activated SNF1-related protein kinases 2(SnRK2s) in Arabidopsis thaliana. The triple mutant of the SnRK2 protein kinases(srk2d srk2e srk2i) showed viviparous germination. It was sensitive to desiccation and showed severe growth defects during seed development. It exhibited a loss of dormancy, strong ABA-insensitivity, and elevated seed ABA content relative to wild-type seeds. The triple mutant had greatly reduced phosphorylation activity in in-gel kinase experiments using bZIP transcription factors including ABI5.Microarray experiments indicate that SRK2D, SRK2E and SRK2I protein kinases involved in ABA signaling are essential for the control of seed development, dormancy and germination through the extensive control of gene expression.
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Report
(4 results)
Research Products
(32 results)
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[Journal Article] Molecular basis of the core regulatory network in ABA responses : sensing, signaling and transport.2010
Author(s)
Umezawa, T., Nakashima, K., Miyakawa, T., Kuromori, T., Tanokura, M., Shinozaki, K., Yamaguchi-Shinozaki, K.
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Journal Title
Plant & Cell Physiology
Volume: 51
Pages: 1821-1839
NAID
Related Report
Peer Reviewed
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[Journal Article] Three Arabidopsis SnRK2 protein kinases, SRK2D/SnRK2.2, SRK2E/SnRK2.6/OST1 and SRK2I/SnRK2.3, involved in ABA signaling are essential for the control of seed development and dormancy2009
Author(s)
Nakashima K, Fujita Y, Kanamori N, Katagiri T, Umezawa T, Kidokoro S, Maruyama K, Yoshida T, Ishiyama K, Kobayashi M, Shinozaki K, Yamaguchi-Shinozaki K.
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Journal Title
Plant Cell Physiol
Volume: 50
Issue: 7
Pages: 1345-63
DOI
NAID
Related Report
Peer Reviewed
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[Journal Article] Three SnRK2 protein kinases are the main positive regulators of abscisic acid signaling in response to water stress in Arabidopsis2009
Author(s)
Fujita Y, Nakashima K, Yoshida T, Katagiri T, Kidokoro S, Kanamori N, Umezawa T, Fujita M, Maruyama K, Ishiyama K, Kobayashi M, Nakasone S, Yamada K, Ito T, Shinozaki K, Yamaguchi-Shinozaki K
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Journal Title
Plant Cell Physiol
Volume: 50
Issue: 12
Pages: 2123-32
DOI
NAID
Related Report
Peer Reviewed
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[Presentation] Three SnRK2 protein kinases involved in ABA-signaling function for the control of seed dormancy and abiotic stress tolerance in Arabidopsis2011
Author(s)
Nakashima, K., Fujita, Y., Maruyama, K., Shinozaki, K., Yamaguchi-Shinozaki, K.
Organizer
22nd International Conference on Arabidopsis Research
Place of Presentation
Wisconsin, USA
Related Report
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[Presentation] Role of AREB-SnRK2 pathway in response to osmotic stress2011
Author(s)
Fujita, Y., Yoshida, T., Chhun, T., Nakashima, K., Fujita, M., Kidokoro, S., Mizoi, J., Shinozaki, K., Yamaguchi-Shinozaki, K.
Organizer
4th International Workshop on Plant Abiotic Stress : From Systems Biology To Sustainable Agriculture
Place of Presentation
Limassol, Cyprus
Related Report
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[Presentation] Plant regulatory systems in drought stress responses2011
Author(s)
Shinozaki, K., Yamaguchi-Shinozaki, K., Kuromori, T., Umezawa, T., Nakashima, K., Fujita, Y.
Organizer
4th International Workshop on Plant Abiotic Stress : From Systems Biology To Sustainable Agriculture
Place of Presentation
Limassol, Cyprus
Related Report
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[Presentation] Three SnRK2 protein kinases are the main positive regulators of ABA signaling in seed development and dormancy in Arabidopsis2010
Author(s)
Nakashima, K., Fujita, Y., Kanamori, N., Katagiri, T., Umezawa, T., Kidokoro, S., Maruyama, K., Yoshida, T., Ishiyama, K., Kobayashi, M., Shinozaki, K., Yamaguchi-Shinozaki, K.
Organizer
The 21st International Conference on Arabidopsis Research(ICAR 2010)
Place of Presentation
パシフィコ横浜(横浜市)
Related Report
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[Presentation] AREB/ABF-SnRK2 pathway involved in ABA signaling in response to water stress2010
Author(s)
Fujita, Y., Yoshida, T., Nakashima, K., Nakasone, S., Chhun, T., Kidokoro, S., Fujita, M., Maruyama, K., Mizoi, J., Shinozaki, K., Yamaguchi-Shinozaki, K.
Organizer
The 21st International Conference on Arabidopsis Research(ICAR 2010)
Place of Presentation
パシフィコ横浜(横浜市)
Related Report
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[Presentation] Three SnRK2 protein kinases are the main positive regulators of ABA signaling in seed development and dormancy in Arabidopsis.2010
Author(s)
Nakashima, K., Fujita, Y., Kanamori, N., Katagiri, T., Umezawa, T., Kidokoro, S., Maruyama, K., Yoshida, T., Ishiyama, K., Kobayashi, M., Shinozaki, K., Yamaguchi-Shinozaki, K.
Organizer
The 21st International Conference on Arabidopsis Research (ICAR 2010)
Place of Presentation
パシフィコ横浜(横浜市)
Related Report
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[Presentation] AREB/ABF-SnRK2 pathway involved in ABA signaling in response to water stress.2010
Author(s)
Fujita, Y., Yoshida, T., Nakashima, K., Nakasone, S., Chhun, T., Kidokoro, S., Fujita, M., Maruyama, K., Mizoi, J., Shinozaki, K., Yamaguchi-Shinozaki, K.
Organizer
The 21st International Conference on Arabidopsis Research (ICAR 2010)
Place of Presentation
パシフィコ横浜(横浜市)
Related Report
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[Presentation] Three Arabidopsis ABA-activated SnRK2 protein kinases, SRK2D/SnRK2.2, SRK2E/SnRK2.6/OST1, and SRK2I/SnRK2.3 are essential in ABA-signaling to control seed development and dormancy2009
Author(s)
Nakashima, K., Fujita, Y., Kanamori, N., Katagiri, T., Umezawa, T., Kidokoro, S., Maruyama, K., Yoshida, T., Ishiyama, K., Kobayashi, M., Shinozaki, K. and Yamaguchi-Shinozaki, K.
Organizer
The 9th International Plant Molecular Biology Congress
Place of Presentation
St. Louis, USA
Related Report
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