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Nonphotochemical Chlorophyll Fluorescence Quenching: Mechanism and Effectiveness in Protecting Plants from Photodamage

Open access
Ruban, Alexander V.·2016·Plant Physiology

Abstract

We review the mechanism underlying nonphotochemical chlorophyll fluorescence quenching (NPQ) and its role in protecting plants against photoinhibition. This review includes an introduction to this phenomenon, a brief history of major milestones in our understanding of NPQ, definitions, and a discussion of quantitative measurements of NPQ We discuss the current knowledge and unknown aspects in the NPQ scenario, including the following: ΔpH, the proton gradient (trigger); light-harvesting complex II (LHCII), PSII light harvesting antenna (site); and changes in the antenna induced by ΔpH (change), which lead to the creation of the quencher We conclude that the minimum requirements for NPQ in vivo are ΔpH, LHCII complexes, and the PsbS protein. We highlight the most important unknown in the NPQ scenario, the mechanism by which PsbS acts upon the LHCII antenna. Finally, we describe a novel, emerging technology for assessing the photoprotective "power" of NPQ and the important findings obtained through this technology.

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Metadata

Authors
Ruban, A. V.
Venue
Plant Physiology
Published
2016-02-10
Volume
170
Issue
4
Pages
1903-1916
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W2322888409
Cited by
1,016
References
153
FWCI
29.34
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Nonphotochemical Chlorophyll Fluorescence Quenching: Mechanism and Effectiveness in Protecting Plants from Photodamage. https://app.cochat.ai/papers/10.1104/pp.15.01935
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Ruban, A. V. (2016). Nonphotochemical Chlorophyll Fluorescence Quenching: Mechanism and Effectiveness in Protecting Plants from Photodamage. Plant Physiology. https://doi.org/10.1104/pp.15.01935

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