作者: Jevgenij Chmeliov , Gediminas Trinkunas , Herbert van Amerongen , Leonas Valkunas
DOI: 10.1007/S11120-015-0083-3
关键词:
摘要: Complex multi-exponential fluorescence decay kinetics observed in various photosynthetic systems like photosystem II (PSII) have often been explained by the reversible quenching mechanism of charge separation taking place reaction center (RC) PSII. However, this description does not account for intrinsic dynamic disorder light-harvesting proteins as well their fluctuating dislocations within antenna, which also facilitate repair RCs, state transitions, and process non-photochemical quenching. Since fluctuations result varying connectivity between pigment–protein complexes, they can lead to non-exponential excitation kinetics. Based on presumption, we recently proposed a simple conceptual model describing diffusion continuous medium accounting possible variations transfer pathways. In current work, is further developed then applied describe originating from very diverse antenna systems, ranging PSII sizes LHCII aggregates even entire thylakoid membrane. all cases, complex are perfectly reproduced relevant time scale without assuming any radical pair equilibration at side quencher, but using just few parameters reflecting mean energy rate overall average organization antenna.