2012 Fiscal Year Final Research Report
A study of plant adaptation to elevated CO2 using CO2 springs as a future ecosystem
| Project/Area Number |
20677001
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| Research Category |
Grant-in-Aid for Young Scientists (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Ecology/Environment
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| Research Institution | Tohoku University |
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Principal Investigator |
HIKOSAKA Kouki 東北大学, 生命科学研究科, 教授 (10272006)
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| Project Period (FY) |
2008 – 2012
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| Keywords | 植物 / 地球環境変化 / 適応進化 / 二酸化炭素濃度上昇 |
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| Research Abstract |
We raised a question whether plants exhibit evolutionaryadaptation to elevated CO_2. We studied plants from natural CO_2 springs, where plantshave been exposed to elevated CO_2 over generation. We found that plants from high CO2area around CO_2 springs have smaller stomata, low maximal stomatal conductance, lowphotosynthetic rates at low CO_2, and higher leaf to root ratio. A meta analysis revealed thatsuch differences are common across different CO2 springs irrespective of species.Competition experiment demonstrated that plants from high CO_2 area are morecompetitive at elevated CO_2. These results suggest that plants evolutionarily adapt toelevated CO_2 conditions.
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