Light Harvesting in Anacystis nidulans Studied in Pigment Mutants |
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| Authors: | Myers J Graham J R Wang R T |
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| Affiliation: | Department of Botany, The University of Texas, Austin, Texas 78712. |
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| Abstract: | Spontaneous pigment mutants of Anacystis nidulans were self-selected for improved growth in far red light (> 650 nanometers). Questions were asked about those features of the light-harvesting mechanism which altered to give the mutants improved photosynthetic performance in far red. Answers were sought by comparing pigment and reaction center concentrations for the parent and six mutants grown in gold fluorescent and in far red light. Three significant results emerged. The ratio of reaction centers for photoreactions I and II (RC1/RC2) varied by a value of about 2.1 for all clones grown in gold and a value of about 1.1 for all clones grown in far red. Alteration of the ratio was not evident in any of the mutants. |
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