Effects of temperature and CO_2 concentration on photosynthetic CO_2 fixation by Chlorella

概要

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The rates of photosynthetic ^<14>CO_2 fixation by Chlorella vulgaris llh, grown under high CO_2, were determined between 4 to 37℃ with air containing from 300 to 13,000 ppm ^<14>CO_2. When the CO_2 level was increased, both the rate of photosynthesis and the optimum temperature for maximum photosynthesis increased. The maximum photo-synthetic rate was reached at 12℃ with 300 ppm ^<14>CO_2. Among the photosynthetic products fromed at 300 ppm ^<14>CO_2, glycolate decreased greatly when the temperature was raised from 20 to 30℃. At 3,000 ppm ^<14>CO_2 an insignificant amount of glycolate was formed at all temperatures, whereas ^<14>C-incorporation into the insoluble fraction, sucrose, and the lipid fraction was significantly higher than at 300 ppm ^<14>CO_2. The ^<14>C in sucrose was greatly increased and the radioactivity in the insoluble fraction decreased when the temperature was raised from 28 to 36℃.
日本植物生理学会の論文
1980-08-00