2009 Fiscal Year Final Research Report
Improvement of nitrogen-use-efficiency based on molecular mechanisms of ammonium assimilation and nitrogen recycling system in rice
| Project/Area Number |
19208007
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant nutrition/Soil science
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| Research Institution | Tohoku University |
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Principal Investigator |
YAMAYA Tomoyuki Tohoku University, 大学院・農学研究科, 教授 (30144778)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Tadashi 東北大学, 大学院・生命科学研究科, 准教授 (40134043)
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| Co-Investigator(Renkei-kenkyūsha) |
SATO Tadashi 東北大学, 大学院・生命科学研究科, 准教授 (40134043)
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| Project Period (FY) |
2007 – 2009
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| Keywords | イネ / アンモニア同化 / 窒素リサイクル機構 / 窒素利用効率 / 遺伝子破壊 / サイトゾル型グルタミン合成酵素 / NADH-グルタミン酸合成酵素 |
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| Research Abstract |
Two new enzymes, GS1;3 and NADH-GOGAT, related to the primary assimilation of ammonium ions in rice discovered after the complete sequencing of genome were focused to understand their functions. Reverse genetics approaches successfully showed that GS1;3 is important during the seed germination, while NADH-GOGAT2 is functioning during nitrogen remobilization during leaf senescence. A new gene related to the nitrogen use efficiency was identified with the forward genetics and it contributed the increase in root-elongation as well as nitrogen uptake in rice.
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Research Products
(21 results)
