Abstract
Gibberellic acid at 10-4 Mxxx was optimal for enhancement of growth, O2 evolution, photosystem II and I and the activity of glycollate dehydrogenase of Anacystis nidulans. A stimulatory effect was observed on photosystem II. Other concentrations of gibberellic acid were inhibitory to O2 evolution and photosystem I. Syntheses of phycocyanin, phycoerythrin and β-carotene were significantly enhanced after 48 h incubation with gibberellic acid at 10-3 Mxxx but the chlorophyll content began to increase 3 h after adding 10-4 Mxxx gibberellic acid.
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The author is with the Department of Biological Sciences, Faculty of Science, University of Science and Technology, Irbid, Jordan.
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Sallal, AK.J. Effect of gibberellic acid on photosynthesis and glycollate dehydrogenase in Anacystis nidulans . World Journal of Microbiology & Biotechnology 11, 649–653 (1995). https://doi.org/10.1007/BF00361009
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DOI: https://doi.org/10.1007/BF00361009