Bicarbonte stimulation of oxygen evolution, ferricyanide reduction and photoinactivation using isolated chloroplasts

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概要

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• Dependence of Hill reaction (ferricyanide reduction) by isolated (broken) chloroplasts on bicarbonate ion increases with time of illumination (upto 4 min) in HCO_3^- free reaction mixture. The stimulation caused by HCO_3^- is independent of light intensity down to very low intensities indicating an involvement of this ion in early photochemical events of photosystem II. Oxygen evolution was found to be more dependent than ferricyanide reduction on HCO_3^-. The existence of an endogenous non-oxygen evolving electron donor in chloroplasts is thus suggested. HCO_3^- is also shown to greatly increase the rate of photoinactivation during Hill reaction.

• 日本植物生理学会の論文

著者

• Stemler Alan

  Departments Of Botany Physiology And Biophysics. University Of Illinois

関連論文

• Bicarbonte stimulation of oxygen evolution, ferricyanide reduction and photoinactivation using isolated chloroplasts

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