Carotenoid to chlorophyll energy transfer in light harvesting complex II from Arabidopsis thaliana probed by femtosecond fluorescence upconversion

被引：47

作者：

Holt, NE

Kennis, JTM

Dall'Osto, L

Bassi, R

Fleming, GR ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA

[3] Free Univ Amsterdam, Fac Sci, Div Phys & Astron, Dept Biophys & Phys Complex Syst, NL-1081 HV Amsterdam, Netherlands

[4] Univ Verona, Fac Sci, Dipartimento Sci & Tecnol, I-37134 Verona, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 379卷 / 3-4期

关键词：

D O I：

10.1016/j.cplett.2003.08.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Trimers of light harvesting complex 11 from Arabidopsis thaliana were studied by femtosecond fluorescence up-conversion. The average lifetime of the carotenoid S-2 state was similar to57 fs for wild type trimers and similar to70 fs for trimers, from a mutant plant with a distinctly different carotenoid composition. We estimate that similar to56% of the energy transferred from carotenoids to chlorophylls proceeds via the carotenoid S, state in the wild type and similar to46% in the mutant. By comparison with the fluorescence excitation spectra, we find that similar to20% of the energy transferred in both samples proceeds through the carotenoid S, state. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：305 / 313

页数：9

共 29 条

[11] The flow of excitation energy in LHCII monomers:: Implications for the structural model of the major plant antenna [J].