Factors Controlling Induction of Carbonic Anhydrase and Efficiency of Photosynthesis in Chlorella vulgaris llh Cells
Oxford University Press, 1983
academicJournal
Zugriff:
When Chlorella vulgaris llh cells which had been grown in air enriched with 2–4% CO 2 (high-CO 2 cells) were bubbled with air containing ca. 400 ppm CO 2 , illumination at an intensity as low as the light compensation point (350 lux) was sufficient to increase the photosynthetic rate under limiting CO 2 concentrations. The same treatment induced carbonic anhydrase (CA) activity. The induction of CA activity and increase in photosynthetic rate at limiting CO 2 concentrations were observed in the presence of 10 μM DCMU which completely inhibits photosynthesis. These results indicate that photosynthetic electron transport is not involved in CA induction in Chlorella vulgaris llh cells. The parallelism between the changes in CA activity and the rate of photosynthesis under limiting CO 2 concentrations agree with the previous conclusion that the transport of CO 2 from outside to the site of CO 2 fixation is facilitated by CA and hence lowers the apparent K m (CO 2 ) for photosynthesis.
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Factors Controlling Induction of Carbonic Anhydrase and Efficiency of Photosynthesis in Chlorella vulgaris llh Cells
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Autor/in / Beteiligte Person: | Shiraiwa, Yoshihiro ; Miyachi, Shigetoh |
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Veröffentlichung: | Oxford University Press, 1983 |
Medientyp: | academicJournal |
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