Results 11 to 20 of about 47,143 (306)

Polymer-Modified Single-Walled Carbon Nanotubes Affect Photosystem II Photochemistry, Intersystem Electron Transport Carriers and Photosystem I End Acceptors in Pea Plants

open access: yesMolecules, 2021
Single-walled carbon nanotubes (SWCNT) have recently been attracting the attention of plant biologists as a prospective tool for modulation of photosynthesis in higher plants.
Nia Petrova   +5 more
doaj   +1 more source

Quality control of photosystem II: lipid peroxidation accelerates photoinhibition under excessive illumination. [PDF]

open access: yesPLoS ONE, 2012
Environmental stresses lower the efficiency of photosynthesis and sometimes cause irreversible damage to plant functions. When spinach thylakoids and Photosystem II membranes were illuminated with excessive visible light (100-1,000 µmol photons m(-1) s ...
Tiffanie Chan   +17 more
doaj   +1 more source

The RUBISCO to Photosystem II Ratio Limits the Maximum Photosynthetic Rate in Picocyanobacteria

open access: yesLife, 2015
Marine Synechococcus and Prochlorococcus are picocyanobacteria predominating in subtropical, oligotrophic marine environments, a niche predicted to expand with climate change.
Jackie K. Zorz   +5 more
doaj   +1 more source

Impact of energy limitations on function and resilience in long-wavelength Photosystem II

open access: yeseLife, 2022
Photosystem II (PSII) uses the energy from red light to split water and reduce quinone, an energy-demanding process based on chlorophyll a (Chl-a) photochemistry. Two types of cyanobacterial PSII can use chlorophyll d (Chl-d) and chlorophyll f (Chl-f) to
Stefania Viola   +9 more
doaj   +1 more source

The Ability of Cyanobacterial Cells to Restore UV-B Radiation Induced Damage to Photosystem II is Influenced by Photolyase Dependent DNA Repair [PDF]

open access: yes, 2013
Damage of DNA and Photosystem-II are among the most significant effects of UV-B irradiation in photosynthetic organisms. Both damaged DNA and Photosystem-II can be repaired, which represent important defense mechanisms against detrimental UV-B effects ...
Sass, László   +5 more
core   +1 more source

A Hard Day's Night: Diatoms continue recycling Photosystem II in the dark

open access: yesFrontiers in Marine Science, 2016
Marine diatoms are photosynthetic, and thrive in environments where light fluctuates. Like all oxygenic photosynthetic organisms diatoms face a light-dependent inactivation of the Photosystem II complexes that photooxidize water to generate biosynthetic
Gang Li   +4 more
doaj   +1 more source

Identification and roles of Photosystem II assembly, stability, and repair factors in Arabidopsis

open access: yesFrontiers in Plant Science, 2016
Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction.
Yan eLu
doaj   +1 more source

Light variability illuminates niche-partitioning among marine Picocyanobacteria. [PDF]

open access: yesPLoS 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

Proton-mediated photoprotection mechanism in photosystem II

open access: yesFrontiers 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
doaj   +1 more source

The Arabidopsis Thylakoid Protein PAM68 Is Required for Efficient D1 Biogenesis and Photosystem II Assembly [PDF]

open access: yes, 2010
Photosystem II (PSII) is a multiprotein complex that functions as a light-driven water:plastoquinone oxidoreductase in photosynthesis. Assembly of PSII proceeds through a number of distinct intermediate states and requires auxiliary proteins.
Leister, D.   +37 more
core   +1 more source

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