| Project/Area Number |
17K07459
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Plant molecular biology/Plant physiology
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
TRAN Lam Son P 国立研究開発法人理化学研究所, 環境資源科学研究センター, ユニットリーダー (10549009)
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | crosstalk / hormone homeostasis / plant growth / stress adaptation / transcriptome / Crosstalk / cytokinin / karrikin / strigolactone / signal transduction / Plant Hormone / Plant Physiology / Abiotic Stress |
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| Outline of Final Research Achievements |
(1) We showed that in Arabidopsis thaliana plants ethylene affects the levels of auxin, cytokinins (CKs), abscisic acid (ABA), salicylic acid and gibberellins, and potentially brassinosteroids and strigolactone (SL), by influencing the expression of genes involved in the rate-limiting steps of their biosynthesis. Furthermore, we reported interactive effects of CK signaling and MAX2 (MORE AXILLARY GROWTH 2, a member of both SL and karrikin pathway) signaling pathways on primary root growth, hypocotyl elongation and shoot branching in Arabidopsis.
(2) We found that the signaling pathways mediated by the SL receptor DWARF14 and the karrikin receptor KARRIKIN INSENSITIVE 2 show both overlapping and specific responses in affecting various physiological and biochemical processes to positively modulate the adaptation of Arabidopsis plants to drought.
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| Academic Significance and Societal Importance of the Research Achievements |
(1)We gained more insights into the importance of hormones and their crosstalk in plant growth and drought adaptation.
(2)We might manipulate hormone pathways for improvement of plant performance under normal and stress conditions, thereby contributing to sustainable agriculture and green innovation.
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