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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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PsbS-Dependent Non-Photochemical Quenching
2014Much of the research on the thermal dissipation of excess absorbed light, measured as non-photochemical quenching (NPQ) of chlorophyll fluorescence, has been focused on a major, rapidly induced and rapidly reversible component of fluorescence quenching termed energy-dependent quenching, feedback de-excitation, or qE.
Matthew D. Brooks +2 more
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Biochimica Et Biophysica Acta - Bioenergetics, 2007 To determine the mechanism of carotenoid-sensitized non-photochemical quenching in cyanobacteria, the kinetics of blue-light-induced quenching and fluorescence spectra were studied in the wild type and mutants of Synechocystis sp.
Navassard V Karapetyan
exaly +2 more sources
Journal of Plant Physiology, 1994
Summary The thermosensitivity of the photosynthetic apparatus of 12-day-old seedlings of Pisum sativum cv. Ran was investigated within the temperature range of 2–50 °C. Fluorescence quenching was used as a criteria. The photochemical (qP) and non-photochemical (qN) fluorescence quenching were measured after a 5-min treatment at the respective ...
Katia Georgieva, Ivan Yordanov
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Summary The thermosensitivity of the photosynthetic apparatus of 12-day-old seedlings of Pisum sativum cv. Ran was investigated within the temperature range of 2–50 °C. Fluorescence quenching was used as a criteria. The photochemical (qP) and non-photochemical (qN) fluorescence quenching were measured after a 5-min treatment at the respective ...
Katia Georgieva, Ivan Yordanov
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Collisional quenching in the photochemical isomerisation of 1,3,5-cycloheptatriene
Chemical Physics Letters, 1969Abstract The photochemical isomerisation of 1,3,5-cycloheptatriene to toluene occurs via the vibrationally excited ground state molecule. Studies of this isomerisation at seven wavelengths and its quenching by various added gases yield values for the vibrational energy removed per collision.
R. Atkinson, B.A. Thrush
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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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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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Biochemical Society Transactions, 2005
NPQ (non-photochemical quenching) is a fundamental photosynthetic mechanism by which plants protect themselves against excess excitation energy and the resulting photodamage. A discussed molecular mechanism of the so-called feedback de-excitation component (qE) of NPQ involves the formation of a quenching complex.
A, Dreuw, G R, Fleming, M, Head-Gordon
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NPQ (non-photochemical quenching) is a fundamental photosynthetic mechanism by which plants protect themselves against excess excitation energy and the resulting photodamage. A discussed molecular mechanism of the so-called feedback de-excitation component (qE) of NPQ involves the formation of a quenching complex.
A, Dreuw, G R, Fleming, M, Head-Gordon
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Physiologia Plantarum, 2011
Partitioning of excitation energy between photochemical quenching (PQ) and non‐photochemical quenching (NPQ) processes is constantly adjusted in the leaf in order to preserve the photosynthetic energy balance. Adjustments in PQ and NPQ often result from a combination of different temporal components that can be simplified into reversible and sustained ...
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Partitioning of excitation energy between photochemical quenching (PQ) and non‐photochemical quenching (NPQ) processes is constantly adjusted in the leaf in order to preserve the photosynthetic energy balance. Adjustments in PQ and NPQ often result from a combination of different temporal components that can be simplified into reversible and sustained ...
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Toward an MP Model of Non-Photochemical Quenching
2009MANCA, Vincenzo +2 more
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