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Non-Photochemical Quenching under Drought and Fluctuating Light [PDF]
International Journal of Molecular Sciences, 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).
Artur Nosalewicz +2 more
europepmc +4 more sources
NTRC Effects on Non-Photochemical Quenching Depends on PGR5 [PDF]
Antioxidants, 2021 Non-photochemical quenching (NPQ) protects plants from the detrimental effects of excess light. NPQ is rapidly induced by the trans-thylakoid proton gradient during photosynthesis, which in turn requires PGR5/PGRL1-dependent cyclic electron flow (CEF ...
Belen Naranjo +3 more
doaj +4 more sources
Remote Sensing, 2017 In this study, we evaluated the effectiveness of photochemical reflectance index (PRI) and non-photochemical quenching (NPQ) for assessing water stress in maize for the purpose of developing remote sensing techniques for monitoring water deficits in ...
Jing M Chen, Hua Yu, Holly Croft
exaly +5 more sources
Temperature mapping of non-photochemical quenching in Chlorella vulgaris [PDF]
Photosynthesis Research, 2022 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.
Andrei Herdean +5 more
openaire +3 more sources
Disentangling the sites of non-photochemical quenching in vascular plants [PDF]
Nature 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.
Lauren Nicol +2 more
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Mechanisms underpinning natural variation in non-photochemical quenching kinetics [PDF]
Biochemical Society TransactionsPlants use light as an energy source to reduce carbon dioxide into carbohydrates during photosynthesis. However, when the incident light exceeds the photosynthesis rate, the excess energy must be dispersed, or it can result in the unregulated formation of harmful reactive oxygen species, especially in plants exposed to very high light or abiotic stress
Glowacka K.
openaire +3 more sources
How much heat does non-photochemical quenching produce? [PDF]
Frontiers in Plant ScienceNon-photochemical quenching (NPQ) is a protective mechanism used by plants to safely dissipate excess absorbed light energy as heat, minimizing photo-oxidative damage. Although the importance of NPQ as a safety valve for photosynthesis is well-known, the
Aoi Murakami +9 more
doaj +2 more sources
Non-Photochemical Quenching: From Light Perception to Photoprotective Gene Expression [PDF]
International Journal of Molecular Sciences, 2022 Light is essential for photosynthesis but light levels that exceed an organism’s assimilation capacity can cause serious damage or even cell death. Plants and microalgae have developed photoprotective mechanisms collectively referred to as non-photochemical quenching to minimize such potential damage.
Dandan Lu +3 more
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On the relationship between non-photochemical quenching and photoprotection of Photosystem II
Biochimica Et Biophysica Acta - Bioenergetics, 2012 Non-photochemical quenching (NPQ) of chlorophyll fluorescence is thought to be an indicator of an essential regulation and photoprotection mechanism against high-light stress in photosynthetic organisms. NPQ is typically characterized by modulated pulse fluorometry and it is often assumed implicitly to be a good proxy for the actual physiological ...
Petar H Lambrev +2 more
exaly +3 more sources
Phothochemical quenching is indicative of ionic stress on ‘Tahiti’ acid lime grafted on citrus genotypes [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2021 The objective was to study the chlorophyll ‘a’ fluorescence and the photochemical quenching from ‘Tahiti’ acid lime grafted in new citrus genotypes under irrigation with three types of water during prefloration phase of the first year of cultivation ...
Tainá A. da Silva +5 more
doaj +1 more source