Results 11 to 20 of about 209,633 (263)

Non-Photochemical Quenching under Drought and Fluctuating Light. [PDF]

Int J Mol Sci, 2022
Plants grow in a variable environment in regard to soil water and light driving photochemical reactions. Light energy exceeding plant capability to use it for photochemical reactions must be dissipated by processes of non-photochemical quenching (NPQ ...
Nosalewicz A, Okoń K, Skorupka M.
europepmc   +4 more sources

Site, trigger, quenching mechanism and recovery of non-photochemical quenching in cyanobacteria: recent updates [PDF]

Photosynthesis Research, 2018
Cyanobacteria exhibit a novel form of non-photochemical quenching (NPQ) at the level of the phycobilisome. NPQ is a process that protects photosystem II (PSII) from possible highlight-induced photo-damage.
Bruno Robert, Madamwar, Datta, Alastair Gardiner, Sonani, Ravi R., Cogdell, Richard, Ravi R. Sonani, Richard Cogdell, Robert, Bruno, Rajesh P. Rastogi, Gardiner, Alastair, Datta Madamwar, Rastogi, Rajesh P.   +11 more
core   +7 more sources

Photochemical and photoelectrochemical quenching of chlorophyll fluorescence in photosystem II

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2009
This paper deals with kinetics and properties of variable fluorescence in leaves and thylakoids upon excitation with low intensity multi-turnover actinic light pulses corresponding with an excitation rate of about 10 Hz. These show a relatively small and
Prasil, O., Durchan, M., Vredenberg, W.J.   +2 more
core   +4 more sources

Diadinoxanthin cycle and non-photochemical quenching in Phaeodactylum tricornutum

Photosynthesis Research, 1994
The diadinoxanthin cycle (DD-cycle) in chromophyte algae involves the interconversion of two carotenoids, diadinoxanthin (DD) and diatoxanthin (DT). We investigated the kinetics of light-induced DD-cycling in the marine diatom Phaeodactylum tricornutum ...
LaRoche, Julie, Olaizola, M., Falkowski, P. G., Kolber, Z.   +3 more
core   +3 more sources

Antioxidants Differentially Regulate Non-Photochemical Quenching. [PDF]

Plant Cell Environ
ABSTRACT Non‐photochemical quenching (NPQ) dissipates excess light energy as heat, limiting reactive oxygen species production during photosynthesis. Exogenous antioxidants are widely reported to improve plant performance under stress, yet their impacts on NPQ are inconsistent across studies, complicating ...
de Rodrigues de Queiroz A, Brown JH, Buan NR, Stone JM, Glowacka K, Roston RL.   +5 more
europepmc   +3 more sources

Temperature mapping of non-photochemical quenching in Chlorella vulgaris. [PDF]

Photosynth Res, 2023
AbstractLight intensity and temperature independently impact all parts of the photosynthetic machinery in plants and algae. Yet to date, the vast majority of pulse amplitude modulated (PAM) chlorophyll a fluorescence measurements have been performed at well-defined light intensities, but rarely at well-defined temperatures.
Herdean A, Hall C, Hughes DJ, Kuzhiumparambil U, Diocaretz BC, Ralph PJ.   +5 more
europepmc   +3 more sources

Photoinhibition, carotenoid composition and the co-regulation of photochemical and non-photochemical quenching in neotropical savanna trees [PDF]

Tree Physiology, 2007
Plants in the neotropical savannas of central Brazil are exposed to high irradiances, high air temperatures and low relative humidities. These conditions impose a selection pressure on plants for strong stomatal regulation of transpiration to maintain ...
Franco, A. C., A. C. Franco, B. Orthen, Matsubara, S., S. Matsubara, Orthen, B.   +5 more
core   +3 more sources

The molecular origin of the OCP-dependent non-photochemical quenching mechanism in cyanobacteria [PDF]

, 2022
Cyanobacteria were the first microorganisms that released oxygen into the atmosphere billions of years ago. To do it safely under intense sunlight, they developed strategies that prevent photooxidation in the photosynthetic membrane.
Fernando, Muzzopappa, Ivo, van Stokkum, Nicoletta, Liguori, Diana, Kirilovsky, John, Kennis, Roberta, Croce   +5 more
core   +1 more source

Disentangling the sites of non-photochemical quenching in vascular plants. [PDF]

Nat Plants, 2019
In nature, plants experience large fluctuations in light intensity and they need to balance the absorption and utilization of this energy appropriately. Non-photochemical quenching (NPQ) is a rapidly switchable mechanism that protects plants from photodamage caused by high light exposure by dissipating the excess absorbed energy as heat.
Nicol L, Nawrocki WJ, Croce R.
europepmc   +4 more sources

Retraction Note: Increased biomass productivity in green algae by tuning non-photochemical quenching. [PDF]

Sci Rep, 2019
Non-Photochemical quenching does not control producivity in Chlamydomonal reinhardtii in contrast to previous ...
Berteotti S, Ballottari M, Bassi R.
europepmc   +2 more sources