2014 Fiscal Year Final Research Report
CO2 conductance from roots to leaves of plants
| Project/Area Number |
25660012
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Crop production science
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| Research Institution | Iwate University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
|
| Keywords | 根圏CO2 / 光合成 / 蒸散流 |
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| Outline of Final Research Achievements |
CO2 concentration in root-zone of plants is substantially higher than atmosphere, and this CO2 source would potentially contribute to leaf photosynthesis of plants and carbon cycle on the earth. Very limited information is available for pathway of CO2 from roots to leaves in short-term. We examined the effects of feeding CO2 to root-zone on leaf gas exchange, and also we traced the 13C labeled CO2 feeding on plant use using sunflower and bean. We found that plants can absorb bicarbonate from roots, but they cannot transport it to aboveground in an hour. However, plants can absorb dissolved CO2 and diffuse very quickly toward atmosphere, and re-fixed the CO2 by themselves and neighbors in an hour.
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| Free Research Field |
作物学
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