2013 Fiscal Year Final Research Report
An analysis and application of the regulation of photosynthesis specific to conifers
| Project/Area Number |
23580209
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Kyushu University |
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Principal Investigator |
TSUYAMA Michito 九州大学, (連合)農学研究科(研究院), 助教 (10380552)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 針葉樹 / 裸子植物 / 被子植物 / 光合成 / 酸素 / メーラー反応 / ストレス耐性 |
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| Research Abstract |
As a general tendency of conifers (a main component of gymnosperm genera), many of them grow in forests in the mid- to high-latitude regions of the Northern Hemisphere where severe climatic conditions such as chilling are often experienced. Conifers may be required to be more tolerant than angiosperms to the surrounding severe conditions. In this study we focused on photosynthesis, because photosynthesis is one of the most sensitive process to stress factors among diverse biological processes in plants. Using total 101 plant species including various types of gymnosperms and angiosperms, we analyzed regulation mechanisms of photosynthesis. Consequently, it was found that gymnosperms have higher capacity for electron flow to oxygen in the chloroplasts' thylakoids than angiosperms. This difference was attributed to a difference due to electron flow dependent on the Mehler reaction.
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