Summary
The effects of various inhibitors on photosynthesis, respiration, and active influx of K and Cl in light and dark inHydrodictyon africanum is reported. The inhibitors used were arsenate (uncouples electron-transport phosphorylations), dicyclohexylcarbodiimide (energy-transfer inhibitor in electron-transport phosphorylation), quinacrine (uncouples photophosphorylation and inhibits oxidative phosphorylation), and ethionine (traps adenylates as S-adenosyl ethionine). The action of these inhibitors, and of those previously used onHydrodictyon africanum, suggests that K influx requires ATP, while Cl influx requires some earlier manifestation of the ATP synthesizing process. Possible reasons for the greater sensitivity of K influx than of CO2 fixation to treatments which interfere with photophosphorylation are discussed.
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Raven, J.A. Inhibitor effects on photosynthesis, respiration and active ion transport inHydrodictyon africanum . J. Membrain Biol. 6, 89–107 (1971). https://doi.org/10.1007/BF01873457
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DOI: https://doi.org/10.1007/BF01873457