Evidence for Inorganic Carbon Transport by Intact Chloroplasts of Chlamydomonas reinhardtii

Evidence for Inorganic Carbon Transport by Intact Chloroplasts of Chlamydomonas reinhardtii Isolated intact chloroplasts from wall-less mutants of Chlamydomonas reinhardtii accumulate inorganic carbon (C i ) from the medium provided the cells had been adapted to low CO 2 photoautotrophic growth conditions. Chloroplasts from cultures grown on high (5%) CO 2 or photoheterotrophically with acetate did not accumulate inorganic carbon. Chloroplast C i accumulation from low CO 2 grown cells was light dependent and was inhibited by uncouplers and inhibitors of electron transport. In a model for C i accumulation by Chlamydomonas , it is proposed that CO 2 diffuses into the cell and C i accumulation occurs in the chloroplast. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Evidence for Inorganic Carbon Transport by Intact Chloroplasts of Chlamydomonas reinhardtii

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Publisher
American Society of Plant Biologist
Copyright
Copyright © 1987 by the American Society of Plant Biologists
ISSN
1532-2548
eISSN
0032-0889
D.O.I.
10.1104/pp.83.3.460
Publisher site
See Article on Publisher Site

Abstract

Isolated intact chloroplasts from wall-less mutants of Chlamydomonas reinhardtii accumulate inorganic carbon (C i ) from the medium provided the cells had been adapted to low CO 2 photoautotrophic growth conditions. Chloroplasts from cultures grown on high (5%) CO 2 or photoheterotrophically with acetate did not accumulate inorganic carbon. Chloroplast C i accumulation from low CO 2 grown cells was light dependent and was inhibited by uncouplers and inhibitors of electron transport. In a model for C i accumulation by Chlamydomonas , it is proposed that CO 2 diffuses into the cell and C i accumulation occurs in the chloroplast.

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