Mechanisms regulating sink formation of soybean under elevated CO_2 and temperature conditions
| Project/Area Number |
20380009
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crop science/Weed science
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| Research Institution | Tohoku University |
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Principal Investigator |
KOKUBUN Makie Tohoku University, 大学院・農学研究科, 教授 (40323084)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Hajime 新潟大学, 農学研究科, 准教授 (10292351)
SAMESHIMA Ryoji 独立行政法人農業・食品産業技術総合研究機構, 東北農業研究センター, チーム長 (70355452)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2010: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2009: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2008: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Keywords | ダイズ / 高二酸化炭素 / 高温 / 莢実形成 / 窒素固定 / 光合成 / シンク形成 / 植物ホルモン / 二酸化炭素濃度 / 根粒 / 葉温 |
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| Research Abstract |
We analyzed physiological mechanisms regulating sink formation of soybean under elevated CO_2 and temperature conditions, with emphasis placed on the capacity of nitrogen fixation and photosynthesis. Under elevated CO_2 and temperature conditions, nitrogen fixation and photosynthesis were significantly enhanced at the early growth stage, whereas they were depressed at the later growth stage. This elevated CO_2-induced down-regulation was associated with the decreased leaf activity, which was probably due to decreased transpiration, increased leaf temperature and accumulation of photoassimilate in leaves under elevated CO_2 and temperature conditions.
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Report
(4 results)
Research Products
(6 results)
