Identification of a slowly inducible zeaxanthin-dependent component of non-photochemical quenching of chlorophyll fluorescence generated under steady-state conditions in Arabidopsis

被引：344

作者：

Nilkens, Manuela ^{[1
]}

Kress, Eugen ^{[1
]}

Lambrev, Petar ^{[2
]}

Miloslavina, Yuliya ^{[2
]}

Mueller, Marc ^{[2
]}

Holzwarth, Alfred R. ^{[2
]}

Jahns, Peter ^{[1
]}

机构：

[1] Univ Dusseldorf, D-40225 Dusseldorf, Germany

[2] Max Planck Inst Bioanorgan Chem, D-45470 Mulheim, Germany

来源：

BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS | 2010年 / 1797卷 / 04期

关键词：

Energy dissipation; Non-photochemical quenching; Photosynthesis; Xanthophyll cycle; Zeaxanthin; XANTHOPHYLL-CYCLE ACTIVITY; PHOTOSYSTEM-II; VIOLAXANTHIN CYCLE; ENERGY-DISSIPATION; EXCITATION-ENERGY; ANTENNA PROTEINS; CATION FORMATION; LIGHT; PHOTOINHIBITION; PLANTS;

D O I：

10.1016/j.bbabio.2010.01.001

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：

The induction and relaxation of non-photochemical quenching (NPQ) under steady-state conditions, i.e. during up to 90 min of illumination at saturating light intensities, was studied in Arabidopsis thaliana. Besides the well-characterized fast qE and the very slow qI component of NPQ, the analysis of the NPQ dynamics identified a zeaxanthin (Zx) dependent component which we term qZ. The formation (rise time 10-15 min) and relaxation (lifetime 10-15 min) of qZ correlated with the synthesis and epoxidation of Zx, respectively. Comparative analysis of different NPQ mutants from Arabidopsis showed that qZ was clearly not related to qE, qT or qI and thus represents a separate, Zx-dependent NPQ component. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：466 / 475

页数：10

共 46 条

[1] Photosynthesis and photoprotection in overwintering plants [J].