Results 21 to 30 of about 5,741,545 (200)
Proton-mediated photoprotection mechanism in photosystem II
Frontiers in Plant Science, 2022 Photo-induced charge separation, which is terminated by electron transfer from the primary quinone QA to the secondary quinone QB, provides the driving force for O2 evolution in photosystem II (PSII).
Yu Sugo +2 more
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Water oxidation in photosystem II [PDF]
Photosynthesis Research, 2019 Biological water oxidation, performed by a single enzyme, photosystem II, is a central research topic not only in understanding the photosynthetic apparatus but also for the development of water splitting catalysts for technological applications.
Wolfgang Lubitz +2 more
openaire +3 more sources
Frontiers in Plant Science, 2016 When oxygenic photosynthetic organisms are exposed to excessive light and/or heat, Photosystem II is damaged and electron transport is blocked. In these events, reactive oxygen species, endogenous radicals and lipid peroxidation products generated by ...
Yasusi Yamamoto
doaj +1 more source
Light variability illuminates niche-partitioning among marine Picocyanobacteria. [PDF]
PLoS ONE, 2007 Prochlorococcus and Synechococcus picocyanobacteria are dominant contributors to marine primary production over large areas of the ocean. Phytoplankton cells are entrained in the water column and are thus often exposed to rapid changes in irradiance ...
Christophe Six +3 more
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 +1 more source
Study of factors controlling the photoprotection capacity of the thylakoid membrane [PDF]
, 2010 PhDPlants require light for the process of photosynthesis, but excess of light absorption can cause photooxidative damage. To avoid this damage, plants have evolved a photoprotective mechanism to dissipate excess light energy as heat in a process ...
Zia, Ahmad
core +4 more sources
Plants, 2021 In the face of rising salinity along coastal regions and in irrigated areas, molecular breeding of tolerant crops and reforestation of exposed areas using tolerant woody species is a two-way strategy.
Hazar Balti +3 more
doaj +1 more source
Interactions between heavy metals and photosynthetic materials studied by optical techniques [PDF]
, 2009 In this work studies on rapid inhibitory interactions between heavy metals and photosynthetic materials at different organization levels were carried out by optical assay techniques, investigating the possibility of applications in the heavy metal ...
CATUCCI, Lucia +14 more
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Excitation Energy Transfer and Trapping in Higher Plant Photosystem II Complexes with Different Antenna Sizes [PDF]
, 2011 700 cm(-1)) and a slow relaxation of the radical pair to an irreversible state (similar to 150 ps). Somewhat unexpectedly, we had to reduce the energy-transfer and charge-separation rates in complexes with decreasing size to obtain optimal fits.
van Amerongen, H. +14 more
core +4 more sources
The response of sunflower to acute disturbance in water availability
Acta Agriculturae Slovenica, 2005 The influence of disturbance in water availability to electron flow in photosystem II was studied in five cultivars of sunflower. The results showed unaffected optimal quantum yield of photosystem II in the plants exposed to limited water supply ...
Mateja GERM +2 more
doaj +1 more source