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Dynamic Stark effect in β and γ carotenes induced by photoexcitation of bacteriochlorophyll c in chlorosomes from Chloroflexus aurantiacus
Chlorosomes of green bacteria can be considered as a prototype of future artificial light-harvesting devices due to their unique property of...
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Multiple mechanisms contribute to fluorometry signals from the voltage-gated proton channel
Voltage-clamp fluorometry (VCF) supplies information about the conformational changes of voltage-gated proteins. Changes in the fluorescence...
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Nanosecond time-resolved infrared spectroscopy for the study of electron transfer in photosystem I
Microsecond time-resolved step-scan FTIR difference spectroscopy was used to study photosystem I (PSI) from Thermosynechococcus vestitus BP-1 ( T....
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Electron and proton transport in wheat exposed to salt stress: is the increase of the thylakoid membrane proton conductivity responsible for decreasing the photosynthetic activity in sensitive genotypes?
Effects of salinity caused by 150 mM NaCl on primary photochemical reactions and some physiological and biochemical parameters (K + /Na + ratio, soluble...
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How electron tunneling and uphill excitation energy transfer support photochemistry in Halomicronema hongdechloris
Halomicronema hongdechloris , the first cyanobacterium reported to produce the red-shifted chlorophyll f (Chl f ) upon acclimation to far-red light,...
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Tools for Measuring Photosynthesis at Different Scales
Measurements of in vivo photosynthesis are powerful tools that probe the largest fluxes of carbon and energy in an illuminated leaf, but often the...
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Current state of the primary charge separation mechanism in photosystem I of cyanobacteria
This review analyzes new data on the mechanism of ultrafast reactions of primary charge separation in photosystem I (PS I) of cyanobacteria obtained...
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A PSII photosynthetic control is activated in anoxic cultures of green algae following illumination
Photosynthetic hydrogen production from microalgae is considered to have potential as a renewable energy source. Yet, the process has two main...
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Characterization of thylakoid division using chloroplast dividing mutants in Arabidopsis
Chloroplasts are double membrane bound organelles that are found in plants and algae. Their division requires a number of proteins to assemble into...
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Photoinhibition of PSI and PSII in Nature and in the Laboratory: Ecological Approaches
Light is indispensable for plants to photosynthesize organic matters. Almost all the organisms including animals on our planet eventually rely on...
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The PshX subunit of the photochemical reaction center from Heliobacterium modesticaldum acts as a low-energy antenna
The anoxygenic phototrophic bacterium Heliobacterium modesticaldum contains a photochemical reaction center protein complex (called the HbRC)...
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Generation of ion-radical chlorophyll states in the light-harvesting antenna and the reaction center of cyanobacterial photosystem I
The energy and charge-transfer processes in photosystem I (PS I) complexes isolated from cyanobacteria Thermosynechococcus elongatus and Synechocystis ...
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David (Dave) Charles Fork (1929–2020): a gentle human being, a great experimenter, and a passionate researcher
We provide here an overview of the remarkable life and outstanding research of David (Dave) Charles Fork (March 4, 1929–December 13, 2021) in...
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Plastoquinone homeostasis in plant acclimation to light intensity
Arabidopsis plants were grown from seeds at different photon flux densities (PFDs) of white light ranging from 65 to 800 µmol photons m −2 s −1 ....
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High salt-induced PSI-supercomplex is associated with high CEF and attenuation of state transitions
While PSI-driven cyclic electron flow (CEF) and assembly of thylakoid supercomplexes have been described in model organisms like Chlamydomonas...
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The different patterns of post-heat stress responses in wheat genotypes: the role of the transthylakoid proton gradient in efficient recovery of leaf photosynthetic capacity
The frequency and severity of heat waves are expected to increase in the near future, with a significant impact on physiological functions and yield...
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Remembering Jan Amesz (1934–2001): a great gentleman, a major discoverer, and an internationally renowned biophysicist of both oxygenic and anoxygenic photosynthesisa
We present here the research contributions of Jan Amesz (1934–2001) on deciphering the details of the early physico-chemical steps in oxygenic...
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Juggling Lightning: How Chlorella ohadii handles extreme energy inputs without damage
The green alga Chlorella ohadii was isolated from a desert biological soil crust, one of the harshest environments on Earth. When grown under optimal...
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Effect of Dipyridamole on Membrane Energization and Energy Transfer in Chromatophores of Rba. sphaeroides
AbstractEffect of dipyridamole (DIP) at concentrations up to 1 mM on fluorescent characteristics of light-harvesting complexes LH2 and LH1, as well...
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Generation of Electric Potential Difference by Chromatophores from Photosynthetic Bacteria in the Presence of Trehalose under Continuous Illumination
AbstractMeasurement of electrical potential difference (Δψ) in membrane vesicles (chromatophores) from the purple bacterium Rhodobacter sphaeroides ...
