| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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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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