Results 11 to 20 of about 47,535 (285)

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, Karolina Okoń, Maria Skorupka   +2 more
openaire   +3 more sources

How much heat does non-photochemical quenching produce? [PDF]

Frontiers in Plant Science
Non-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, Aoi Murakami, Aoi Murakami, Eunchul Kim, Eunchul Kim, Jun Minagawa, Jun Minagawa, Kenji Takizawa, Kenji Takizawa, Kenji Takizawa   +9 more
doaj   +2 more sources

Mechanisms underpinning natural variation in non-photochemical quenching kinetics [PDF]

Biochemical Society Transactions
Plants 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

Potassium deficiency impairs photosynthetic induction via disrupted electron transport and photochemistry in Phaseolus vulgaris [PDF]

Frontiers in Plant Science
Our previous study revealed that potassium (K) deficiency depressed carbon assimilation during photosynthetic induction in Phaseolus vulgaris. Building on this work, the current study presents a re-analysis of previously collected gas exchange and ...
Liling Wu, Qi Luo, Ting Zhu, Yunmin Wei
doaj   +2 more sources

ATP‐induced photochemical quenching of variable chlorophyll fluorescence [PDF]

FEBS Letters, 1987
ATP induces rapid quenching of fluorescence yield in light‐activated class D chloroplasts, distinguishable from the slower quenching caused by protein phosphorylation. The mechanism of the rapid quenching is shown to be photochemical, by application of the saturation pulse method with a modulated measuring system [(1986) Photosynth. Res.
Schreiber, U., Rienits, K.G.
openaire   +1 more source

Partial shade improved the photosynthetic capacity and polysaccharide accumulation of the medicinal plant Bletilla ochracea Schltr.

Photosynthetica, 2022
To study the light intensity suitable for Bletilla ochracea Schltr., morphology, photosynthetic parameters, and polysaccharide content of seedlings were evaluated under different light intensities.
X.F. YU, X.Y. MING, M. XIONG, C. ZHANG, L.J. YUE, L. YANG, C.Y. FAN   +6 more
doaj   +1 more source

Non-Photochemical Quenching. A Response to Excess Light Energy [PDF]

Plant Physiology, 2001
Plants and algae have a love/hate relationship with light. As oxygenic photoautotrophic organisms, they require light for life; however, too much light can lead to increased production of damaging reactive oxygen species as byproducts of photosynthesis.
P, Müller, X P, Li, K K, Niyogi
openaire   +2 more sources

Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses

Applied Sciences, 2020
The present research aimed at evaluating the harmless dissipation of excess excitation energy by durum wheat (Triticum durum Desf.) leaves in response to the application of a bacterial consortium consisting of four plant growth-promoting bacteria (PGPB).
Mohammad Yaghoubi Khanghahi, Sabrina Strafella, Carmine Crecchio   +2 more
doaj   +1 more source

The effects of increasing salinity levels on Sulla carnosa photosynthesis are mainly of stomatal nature

Journal of Oasis Agriculture and Sustainable Development, 2023
Sulla carnosa Desf. plants were subjected to 0, 100, 200, and 300 mM NaCl for 40 days. Leaf and stem growth as well as root and leaf water contents were not affected even at 300 mM NaCl, confirming the halophytic nature of this species.
Ellouzi Hasna , Mokded Rabhi
doaj   +1 more source

Analysis of initial chlorophyll fluorescence induction kinetics in chloroplasts in terms of rate constants of donor side quenching release and electron trapping in photosystem II [PDF]

, 2008
The fluorescence induction F(t) of dark-adapted chloroplasts has been studied in multi-turnover 1 s light flashes (MTFs). A theoretical expression for the initial fluorescence rise is derived from a set of rate equations that describes the sequence of ...
Vredenberg, W.J.
core   +2 more sources