Oxygen evolution in dark-developed spruce chloroplasts

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概要

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• Chloroplasts isolated from dark-grown seedlings of Picea abies showed activities of DCIP and Fecy photoreductions without addition of an electron donor to PS-II. In addition to this, when light-induced oxygen evolution was measured with an oxygen electrode, a significant amount of oxygen was found. These results indicate that the photoreductions are coupled to the oxygen-evolving reaction. Furthermore, thylakoid membranes were functional in the proton uptake and the 515-nm absorbance change as parameters of their physicochemical functions. Electron microscopy showed that thylakoids were well-developed with prolamellar bodies and partially stacked to from grana. We conclude that oxygen-evolving ability and the physicochemical function of thylakoid membranes develop in chloroplasts of dark-grown spruce seedlings.

• 日本植物生理学会の論文

著者

• Oku Tatsuo

  Institute Of Biophysics Faculty Of Agriculture Kyushu University

• Hayashi Hirofumi

  Institute Of Biophysics Faculty Of Agriculture Kyushu University

• Tomita Giiti

  Institute of Biophysics, Faculty of Agriculture, Kyushu University

• Tomita Giiti

  Institute Of Biophysics Faculty Of Agriculture Kyushu University

• Hayashi Hirofumi

  Institute for Molecular Science

関連論文

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