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Non-photochemical quenching of chlorophyll fluorescence in the green alga Dunaliella
Photosynthesis Research, 1990The relaxation of the non-photochemical quenching of chlorophyll fluorescence has been investigated in cells of the green alga Dunaliella following illumination. The relaxation after the addition of DCMU or darkening was strongly biphasic. The uncoupler NH4Cl induced rapid relaxation of both phases, which were therefore both energy-dependent quenching,
C B, Lee, D, Rees, P, Horton
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Energy-Dependent Non-Photochemical Quenching: PsbS, LhcSR, and Other Players
Biochemistry (Moscow)The photosynthetic apparatus of plants is capable of capturing even weak fluxes of light energy. Hence, strong and rapid increase in irradiance should be dangerous for plants. To solve the problems caused by fluctuations of incident radiation (up to excessive), plants have developed a number of protective mechanisms, including non-photochemical ...
Vasily V, Ptushenko, Andrei P, Razjivin
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The structural basis of non-photochemical quenching is revealed?
Trends in Plant Science, 2006Light-harvesting complex II (LHCII, the major plant light-harvesting pigment-protein complex, efficiently harvests light-energy. However, if the incident light intensity is too high and photosynthesis becomes saturated, LHCII can switch into a quenching state that prevents photodamage.
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Chlorophyll fluorescence from spinach leaves: Resolution of non-photochemical quenching
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1989Usingsaturating light pulses of 800 ms duration, room-temperature chlorophyll fluorescence quenching in intact spinach leaves has been examined upon illumination with different light quantities and qualities. The observed non-photochemical quenching was resolved into three different components by their relaxation times when the actinic light was ...
M. Hodges, G. Comic, J.-M. Briantais
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Photosynthesis Research, 2007
The kinetics of non-photochemical quenching (NPQ) of chlorophyll fluorescence was studied in pea leaves at different temperatures between 5 and 25 degrees C and during rapid jumps of the leaf temperature. At 5 degrees C, NPQ relaxed very slowly in the dark and was sustained for up to 30 min.
Petar H, Lambrev +7 more
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The kinetics of non-photochemical quenching (NPQ) of chlorophyll fluorescence was studied in pea leaves at different temperatures between 5 and 25 degrees C and during rapid jumps of the leaf temperature. At 5 degrees C, NPQ relaxed very slowly in the dark and was sustained for up to 30 min.
Petar H, Lambrev +7 more
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Regulation of Non-Photochemical Quenching of Chlorophyll Fluorescence in Plants
Australian Journal of Plant Physiology, 1995Non-photochemical quenching of chlorophyll fluorescence indicates the de-excitation of light-generated excited states in the chlorophyll associated with photosystem II (PSII). The principle process contributing to this quenching is dependent on the formation of the thylakoid proton gradient and is an important mechanism for protecting PSII from ...
AV Ruban, P Horton
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Non-photochemical-quenching Mechanisms in the Cyanobacterium Thermosynechococcus elongatus
2008In the cyanobacterium Synechocystis PCC 6803 grown under iron replete or iron deplete conditions, blue light induces a photoprotective Non-Photochemical-Quenching (NPQ) mechanism. This energy dissipation mechanism involves the phycobilisomes and the Orange Carotenoid Protein (OCP) encoded by the slr1963 gene.
Leyla Abasova +3 more
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Spectroscopic Investigation of Carotenoids Involved in Non-Photochemical Fluorescence Quenching
2014This chapter will review the recent results in the field of carotenoid photophysics and relate excited-state properties of carotenoids to their potential roles in the dissipation of the singlet-excited state of chlorophyll a resulting in non-photochemical quenching (NPQ) of chlorophyll fluorescence.
Tomáš Polívka, Harry A. Frank
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Non-Photochemical Fluorescence Quenching in Avena Sativa at Subambient Temperatures
1998Photochemical quenching is mainly controlled by the redox state of QA, the second electron acceptor following the reaction center (P680) of photosystem II (PS II) [1]. reduced/oxidized, fluorescence from the antennae of PS II is high/low. P680+, the oxidized reaction center of PS II, is also a fluorescence quencher, but it is quickly rereduced (in less
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Toward an MP Model of Non-Photochemical Quenching
2009MANCA, Vincenzo +2 more
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