<研究報告>大豆子葉葉緑体における光化学系IIの研究

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Chloroplasts isolated from soybean cotyledons could reduce DPIP in the light and the activity of DPIP photoreduction was lower than that of chloroplasts from leaves. The activity of DPIP photoreduction in cotyledon chloroplasts was not stimulated by addition of TPB, as an artificial electron donor to photosystem II. The Hill activity was inhibited when cotyledon chloroplasts were washed with imidazole. After treatment with imidazole, cotyledon chloroplasts could photoreduce DPIP in the presence of TPB. This suggests that in cotyledon chloroplasts, the oxygen evolution system still remains partly inactivated state after development of the reaction center of photosystem II and some modifications of thylakoid membranes is required for the donation of electrons to photosystem II by hydrophilic electron donors, such as TPB.
福岡女子大学の論文
1979-02-28