Restoration of lysolecithin-induced inhibition of the Hill reaction in spinach chloroplasts by the addition of lecithin

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概要

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• Reactivation of the lysolecithin-induced inhibition of the electron transport in spinach chloroplasts was investigated after the addition of various molecular species of lecithin. The addition of lecithins consisting of unsaturated fatty acids to a chloroplast suspension that previously had been incubated with lysolecithin, restored the activity of electron transport from water to ferricyanide to the level of the activity in untreated chloroplasts; and the activity of the transport from water to dichlorophenolindophenol also was partially restored. No reactivation of electron flow from water to NADP or from reduced dichlorophenolindophenol to methyl viologen was observed with any form of lecithin. The effect of molecular form of lecithin on the reactivation of ferricyanide photoreduction in lysolecithin-incubated chloroplasts was dilinoleoyl > soybean > dioleoyl > distearoyl = dipalmitoyl lecithin. No reactivation of the Hill reaction was observed on the addition of dimyristoyl lecithin. The mechanism of lecithin-induced reactivation is discussed.

• 日本植物生理学会の論文

著者

• Hoshina Satoshi

  Botanical Institute Faculty Of Science Kanazawa University

関連論文

• Photoswelling and light-inactivation of isolated chloroplasts I. Change in lipid content in light-aged chloroplasts
• Photoswelling and light-inactivation of isolated chloroplasts II. Functional and structural changes in isolated chloroplasts under the influence of lysolecithin
• Restoration of lysolecithin-induced inhibition of the Hill reaction in spinach chloroplasts by the addition of lecithin

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