Photosynthetic performance of photobionts in lichens is more impaired by visible radiation than UV-A1, with significant but reversible photoinhibition observed after sunlight exposure.
Photosynthesis Research
Springer Science+Business Media · Plant Physiology & Photobiology · ISSN 0166-8595, 1573-5079
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Blue-enriched light spectra (25B, 75B, 100B) increase mesophyll conductance and photosynthetic rate in cucumber leaves compared to red light, with 75B showing the highest performance.
A combination of α-DDM and digitonin enables effective isolation of PSII-LHCII supercomplexes from shade-adapted plants, reducing PSI contamination and improving antenna retention.
High-resolution cryo-EM structure of monomeric Photosystem I from Thermosynechococcus vestitus reveals all subunits except PsaL at 1.8 Å resolution.
Local lumenal pH may regulate PSII complex movement and maturation within thylakoid membranes through multiple mechanisms.
Interruption of menB gene in cyanobacterium Synechocystis sp. PCC 6803 causes a redistribution of electron flow in photosystem I, favoring the B-branch over the A-branch.
High light and elevated temperature cause significant structural damage to photosystem II in Arabidopsis thaliana, including loss of subunits and photodamage near the D1 and D2 subunits.
Maximum photosynthesis turnover rates in phytoplankton vary from 80 to 800 s^-1, depending on environmental conditions and nutrient availability, as measured by fluorescence kinetics.
Excitation energy transfer between bacteriochlorophyll monomers in mutant bacterial reaction centers occurs within 104–98 fs, depending on temperature.
Elevated bicarbonate concentration increases lumen pH and stimulates electron transport in isolated pea thylakoids, indicating bicarbonate as a potential regulator of thylakoid luminal pH.
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