| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
Photosynthesis comprises a series of complex reactions, including the metabolic process known as “photorespiration” which produces ammonia. In the established theory, ammonia generated during photorespiration is immediately assimilated through catalysis by glutamine synthetase in chloroplasts (GS2) into an amino acid called glutamine. We tested for the presence or absence of GS2 in various conifer leaves, finding only the cytosolic glutamine synthetase isoform (GS1); GS2 was not detected. Furthermore, we found that leaves of conifers have very low assimilation efficiency of photorespiratory ammonia in comparison to leaves of crops and broadleaf trees.
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