Carbonic Anhydrase in Chlamydomonas reinhardtii II. Requirements for Carbonic Anhydrase Induction
- 1 January 1983
- journal article
- Published by Oxford University Press (OUP) in Plant and Cell Physiology
- Vol. 24 (2) , 301-304
- https://doi.org/10.1093/pcp/24.2.301
Abstract
Carbonic anhydrase (CA) activity in wild type cells of Chlamydomonas reinhardtii was low when cells were cultured under 2% CO2 in the light. When the gas phase was changed to air, CA activity incresaed as much as 20 fold over the next 24 hours. In contrast, CA activity did not change markedly in cells of the mutants pet 20-8 (PS IInegative), lip 10-2 (photophosphorylation-negative), and F60 (phosphoribulokinasenegative), when they were subjected to the same induction regimen. DCMU (10−5 M) and cycloheximide (3 μg/ml) severely inhibited the induction in wild type cells. No induction occured when CO2 concentration was lowered in darkness.Keywords
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