2016 Fiscal Year Final Research Report
Scavenging system of reactive carbonyl species in photosynthesis organisms
| Project/Area Number |
26450079
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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 |
Plant nutrition/Soil science
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| Research Institution | Kobe University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 光合成 |
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| Outline of Final Research Achievements |
We analyzed the toxicity and scavenging mechanism of reactive carbonyl species (RCS) in higher plants. We found that in photosynthesis reactive oxygen species (ROS) was produced, and ROS oxidized lipids in thylakoid membranes of chloroplasts to produce RCS. In the mutant of Arabidopsis which was deficient in the enzyme (alkenal-one oxidoreductase (AOR)) to scavenge RCS, RCS accumulated and decreased respiration rate. RCS oxidatively inactivated the degradation enzymes of starch. The inactivation of respiration was the reason why the mutant showed the retarded growth, compared to wild type. That is, AOR functioned to detoxify RCS which produced in illuminated chloroplasts.
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| Free Research Field |
植物生理学
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