title: [Spectroscopy research on the origin mechanism for light induced delayed fluorescence of chloroplast].
abstract: Research of the mechanism for delayed fluorescence origin play an important role in the application of DF. Based onthe charge recombination theory, the mechanism for delayed fluorescence origin is theoretically analyzed in this paper. The decay kinetics of DF, depending on the backward transport electron and oxidized state P680+, can be well fitted by poly-exponent. The relative fast component of DF originates from the Z+ P680 Q(A)- states, generated during the previous period of the sample illumination. On the other hand, the slow component of DF is ascribed to the state Q(B)= --the next electron carrier of deoxidized side in PS II. Meanwhile, the experimental results confirmed the theoretical conclusion. Furthermore, the authors testified that the third component with lifetime much greater than the time of the registration period (which is presented as a constant), is corresponds to the recombination of P680+ and the backward transport electron from PSI.
authors.affiliation: Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730070, China
authors.forename: Cheng-long
authors.initials: CL
authors.lastname: Wang
authors.forename: Guo-xin
authors.initials: GX
authors.lastname: Ma
authors.forename: Duo-wang
authors.initials: DW
authors.lastname: Fan
authors.forename: Rong-bin
authors.initials: RB
authors.lastname: Xia
mesh_terms: D000465:Algorithms; D002736:Chloroplasts / Q000737:chemistry / Q000187:drug effects / Q000528:radiation effects*; D004237:Diuron / Q000494:pharmacology; D004579:Electron Transport / Q000187:drug effects / Q000528:radiation effects; D005453:Fluorescence; D006540:Herbicides / Q000494:pharmacology; D007700:Kinetics; D008027:Light; D008956:Models, Chemical; D010788:Photosynthesis / Q000187:drug effects / Q000528:radiation effects; D045332:Photosystem II Protein Complex / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000295:instrumentation / Q000379:methods*; D020524:Thylakoids / Q000737:chemistry / Q000187:drug effects / Q000528:radiation effects; D013997:Time Factors
chemical_list: D006540:Herbicides; D045332:Photosystem II Protein Complex; D004237:Diuron