The xanthophyll cycle pool size controls the kinetics of non-photochemical quenching in Arabidopsis thaliana

被引：83

作者：

Johnson, Matthew P. ^{[1
]}

Davison, Paul A. ^{[1
]}

Ruban, Alexander V. ^{[2
]}

Horton, Peter ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mol Biol & Biotechnol, Sheffield S10 2TN, S Yorkshire, England

[2] Queen Mary Univ London, Sch Biol & Chem Sci, London E1 4NS, England

来源：

FEBS LETTERS | 2008年 / 582卷 / 02期

基金：

英国生物技术与生命科学研究理事会;

关键词：

xanthophyll cycle; thylakoid membrane; non-photochemical quenching; photoprotection;

D O I：

10.1016/j.febslet.2007.12.016

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Arabidopsis plants overexpressing beta-carotene hydroxylase 1 accumulate over double the amount of zeaxanthin present in wild-type plants. The final amplitude of non-photochemical quenching (NPQ) was found to be the same in these plants, but the kinetics were different. The formation and relaxation of NPQ consistently correlated with the de-epoxidation state of the xanthophyll cycle pool and not the amount of zeaxanthin. These data indicate that zeaxanthin and violaxanthin antagonistically regulate the switch between the light harvesting and photoprotective modes of the light harvesting system and show that control of the xanthophyll cycle pool size is necessary to optimize the kinetics of NPQ. (C) 2007 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

引用

页码：262 / 266

页数：5

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