乾燥・塩ストレス応答と生育を制御するサイトカイニンシグナル因子の機能解析
Project/Area Number |
25440149
|
Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Plant molecular biology/Plant physiology
|
Research Institution | Institute of Physical and Chemical Research |
Principal Investigator |
西山 りゑ 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, 研究員 (10443003)
|
Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Discontinued (Fiscal Year 2015)
|
Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | environmental response / 環境応答 |
Outline of Annual Research Achievements |
1. Identification of drought-tolerant ahp and arr high-order mutants. Ahp and arr multiple mutants were selected for drought tolerance assay based on their growth rate under normal conditions. Results showed that several ahp and arr high-order mutants were drought-tolerant, suggesting that these AHP and ARR genes may be involved in the regulation of drought response. 2. Detailed tolerance assay of lower-order ahp and arr mutants. Examined degree of drought tolerance of ahp and arr lower-order, including single mutants, to study whether the selected AHPs and ARRs redundantly regulate drought response. Results showed that several AHP and ARR genes appear to redundantly regulate drought response, and few of them could act alone, as individual loss-of-function of these genes resulted in sensitivity to drought. 3. Identification of AHP and ARR genes that regulate drought response and/or growth. Several AHP and ARR genes in single or double mutants that regulate drought response but not plant growth were identified. However, their higher-order mutations affected both plant drought response and growth. Results suggest that drought response can be affected by a single AHP or ARR; however, growth is controlled by more than two AHP or two ARR genes.
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Report
(3 results)
Research Products
(1 results)