Xanthophyll-cycle dependence of the energy transfer between carotenoid dark states and chlorophylls in NPQ mutants of living plants and in LHC II

被引：25

作者：

Bode, Stefan ^{[1
]}

Quentmeier, Claudia C. ^{[1
]}

Liao, Pen-Nan ^{[1
]}

Barros, Tiago ^{[3
]}

Walla, Peter J. ^{[1
,2
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Phys & Theoret Chem, Dept Biophys Chem, Hans Sommer Str 10, D-38106 Braunschweig, Germany

[2] Max Planck Inst Biophys Chem, Dept Spectroscopy & Photochem Kinet, D-37077 Gottingen, Germany

[3] Max Planck Inst Biophys, Dept Biol Struct, D-60438 Frankfurt, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 450卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2007.11.035

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：

The Car S-1 -> Chl energy transfer efficiency, Phi(Transfer) in xanthophyll-cycle mutants of living plants and LHC II was investigated by selective Car S, two-photon excitation. Before high-light illumination Phi(Transfer), of the violaxanthin deficient mutant npq2 is similar to 30% smaller than the corresponding value for wild type plants. For the zeaxanthin deficient mutant, npq1, Phi(Transfer) is similar to 30% larger. Wild type Arabidopsis thaliana is the only variant which is capable of a light-dependent decrease of up to 40% and complete recovery to the original Phi(Transfer) values, In contrast, Phi Transfer remains constant during dark adaptation in both mutants. Surprisingly, changes in Phi Transfer of LHC II preparations were less than 5% only, when substituting violaxanthin by zeaxanthin. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：379 / 385

页数：7

共 30 条

[1] Carotenoid radical cations as a probe for the molecular mechanism of nonphotochemical quenching in oxygenic photosynthesis [J].