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

Manuela Nilkens, Eugen Kress, Petar Lambrev, Yuliya Miloslavina, Marc Müller, Alfred R. Holzwarth, Peter Jahns

Research output: Contribution to journalArticle

213 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)466-475
Number of pages10
JournalBiochimica et Biophysica Acta - Bioenergetics
Volume1797
Issue number4
DOIs
Publication statusPublished - Apr 1 2010

Keywords

  • Energy dissipation
  • Non-photochemical quenching
  • Photosynthesis
  • Xanthophyll cycle
  • Zeaxanthin

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology

Fingerprint Dive into the research topics of 'Identification of a slowly inducible zeaxanthin-dependent component of non-photochemical quenching of chlorophyll fluorescence generated under steady-state conditions in Arabidopsis'. Together they form a unique fingerprint.

  • Cite this