Photoreaction of Cyanobacterium Acaryochloris marina That Contain Chl d as the Major Pigment.

Abstract

The electron transfer reactions of PSII are reversible and the charge-separated states can be partly lost in charge recombination process. The charge recombination reaction is known to re-populate P680^* and to produce delayed fluorescence (DF) in PSII. However, We measured comprehensive decay process of prompt and delayed fluorescence lifetime from 1 ps to 10 sec after the laser excitation in Acaryochloris marina that contain Chl d as the major pigment. We discussed the mechanism of photochemical reaction in PS II of this unique organism.