Identification of the Terminal Energy Donor to the Reaction Center in the Pigment System of Green Plants by Time-Resolved Fluorescence Spectroscopy at -196℃

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概要

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• A specific antenna component in the photosynthetic pigment system, the direct energy donor to the reaction center (RC), was identified in PS I and II in green plants by time-resolved fluorescence spectroscopy at -196℃. The fluorescence components were detected at 707 nm and 685 nm for PS I and II, respectively, and these antennae are hereafter referred to as the terminal energy donors. In PS II, component that fluoresces at 695 nm also functions as an energy pool; its rise time is slow (50 ps), suggesting that it represents a side path in the flow of energy. The energy levels of these direct donors were lower than, or almost the same as that of the primary electron donors in RC I (P700) and II (P680), respectively. The similarities and differences between these donors are discussed in relation to the structural and energetic properties of the antenna components in PS I and II core complexes.

• 日本植物生理学会の論文

著者

• Mimuro M

  National Institute For Basic Biology

• Mimuro Mamoru

  National Institute For Basic Biology:ocean Research Institute University Of Tokyo

• Mimuro Mamoru

  National Institute For Basic Biology

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• Identification of the Terminal Energy Donor to the Reaction Center in the Pigment System of Green Plants by Time-Resolved Fluorescence Spectroscopy at -196℃

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