PMID: 11607518Mar 14, 1995Paper

Xanthophyll cycle-dependent quenching of photosystem II chlorophyll a fluorescence: formation of a quenching complex with a short fluorescence lifetime

Proceedings of the National Academy of Sciences of the United States of America
A M Gilmore Govindjee

Abstract

Excess light triggers protective nonradiative dissipation of excitation energy in photosystem II through the formation of a trans-thylakoid pH gradient that in turn stimulates formation of zeaxanthin and antheraxanthin. These xanthophylls when combined with protonation of antenna pigment-protein complexes may increase nonradiative dissipation and, thus, quench chlorophyll a fluorescence. Here we measured, in parallel, the chlorophyll a fluorescence lifetime and intensity to understand the mechanism of this process. Increasing the xanthophyll concentration in the presence of a pH gradient (quenched conditions) decreases the fractional intensity of a fluorescence lifetime component centered at approximately 2 ns and increases a component at approximately 0.4 ns. Uncoupling the pH gradient (unquenched conditions) eliminates the 0.4-ns component. Changes in the xanthophyll concentration do not significantly affect the fluorescence lifetimes in either the quenched or unquenched sample conditions. However, there are differences in fluorescence lifetimes between the quenched and unquenched states that are due to pH-related, but nonxanthophyll-related, processes. Quenching of the maximal fluorescence intensity correlates with both the ...Continue Reading

References

May 14, 1976·Biochimica Et Biophysica Acta·P M Sokolove, T V Marsho
Jan 31, 1975·Biochimica Et Biophysica Acta·W L Butler, M Kitajima
Mar 1, 1992·Proceedings of the National Academy of Sciences of the United States of America·A M Gilmore, H Y Yamamoto
Jan 1, 1988·Annual Review of Biophysics and Biophysical Chemistry·H FrauenfelderR D Young
Apr 1, 1987·Biophysical Journal·J R AlcalaF G Prendergast
Oct 3, 1994·FEBS Letters·A R Crofts, C T Yerkes
Mar 1, 1993·European Journal of Biochemistry·R BassiJ Marquardt
Apr 1, 1962·Archives of Biochemistry and Biophysics·H Y YAMAMOTOC O CHICHESTER
Sep 1, 1988·Biophysical Journal·G H SchatzA R Holzwarth

❮ Previous
Next ❯

Citations

Sep 27, 2008·European Biophysics Journal : EBJ·Atanaska AndreevaMira Busheva
Jun 25, 2013·Photosynthesis Research·Julia ZaksGraham R Fleming
Oct 12, 2013·Photosynthesis Research·Julian J Eaton-Rye
Nov 14, 2000·Current Opinion in Plant Biology·K K Niyogi
Jul 21, 2009·Proceedings of the National Academy of Sciences of the United States of America·Stefan BodePeter J Walla
May 16, 2012·Proceedings of the National Academy of Sciences of the United States of America·Kapil AmarnathGraham R Fleming
Mar 1, 1996·Photochemistry and Photobiology·H A Frank, R J Cogdell
Jun 1, 1996·Annual Review of Plant Physiology and Plant Molecular Biology·P. HortonR. G. Walters
Nov 6, 2008·Annual Review of Genetics·Stephan EberhardFrancis-André Wollman
Apr 5, 2003·Proceedings of the National Academy of Sciences of the United States of America·Ying-Zhong MaGraham R Fleming
Sep 6, 2000·Proceedings of the National Academy of Sciences of the United States of America·A M Gilmore, M C Ball
Dec 10, 1997·Proceedings of the National Academy of Sciences of the United States of America·K K NiyogiA R Grossman
Jun 10, 2014·Biochemistry. Biokhimii︠a︡·A Stirbet Govindjee
May 29, 2014·Journal of Experimental Botany·Albert Porcar-CastellJoseph A Berry
Oct 13, 2014·Plant Physiology and Biochemistry : PPB·Ismayil S ZulfugarovChoon-Hwan Lee
Oct 25, 2014·BMC Plant Biology·Ismayil S ZulfugarovChoon-Hwan Lee
Nov 6, 2015·European Biophysics Journal : EBJ·Arne S KristoffersenSvein R Erga
Dec 6, 2005·Journal of Plant Physiology·Michael Schagerl, Brigitte Müller
May 17, 2011·Biochimica Et Biophysica Acta·Alexander V RubanChristopher D P Duffy
Nov 22, 2011·Biophysical Journal·Anjali PanditWillem J de Grip
Jan 31, 2012·Biochimica Et Biophysica Acta·Theodoros TsiavosKiriakos Kotzabasis
Jan 18, 2012·Biochimica Et Biophysica Acta·Anjana JajooGyőző Garab
Jun 24, 2016·Proceedings of the National Academy of Sciences of the United States of America·Emine DincRoberta Croce
Jan 8, 2008·Journal of Inorganic Biochemistry·Andreas Dreuw, Michael Wormit
Mar 23, 2004·The Journal of Biological Chemistry·Xiao-Ping LiKrishna K Niyogi

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.