Photoacoustic Measurements of Cyclic Electron Flow around Photosystem I in Leaves Adapted to Light-States 1 and 2 : ENVIRONMENTAL AND STRESS RESPONSES : MEMBRANES AND BIOENERGETICS

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概要

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• The photoacoustic technique was used to study in vivo cyclic electron flow through PS I in intact plant leaves irradiated with far-red light. Appreciable PS I-cyclic ATP formation was shown to occur in both C-3 and C-4 plants. It was also observed that various environmental/experimental conditions leading to a significant inhibition of the linear photosynthetic electron transport were associated with a stimulation of PS I-cyclic energy storage. In contrast, in vivo adaptation of leaves to light-states 1 and 2 did not induce any photoacoustically measurable changes in the ca-pacity of PS I for cyclic electron transfer. Consequently, the presented data do not support the recent hypothesis that the main function of light-induced state transitions is to regulate the balance between linear (PS I + PS II) and cyclic (PS I) electron transport in the chloroplasts.

• 日本植物生理学会の論文

著者

• Havaux M

  Cea-sciences Du Vivant Saint-paul-lez-durance Fra

• Havaux Michel

  Departement de Physiologie Vegetale et Ecosystemes, Centre d'Etudes de Cadarache

関連論文

• Photoacoustic Measurements of Cyclic Electron Flow around Photosystem I in Leaves Adapted to Light-States 1 and 2 : ENVIRONMENTAL AND STRESS RESPONSES : MEMBRANES AND BIOENERGETICS

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