Photosynthetic Processes and Mechanisms

Engineering C3.5 Photosynthesis: Coupling Mitochondrial Bioenergetics to Rubisco Efficiency in Arabidopsis

This paper proposes and evaluates C3.5 photosynthesis, a novel strategy to enhance Rubisco efficiency by coupling mitochondrial bioenergetics to chloroplast carbon assimilation in Arabidopsis.

Antimycin A, but not antimycin A3 or myxothiazol, directly suppresses photosystem II activity

This study shows that antimycin A directly suppresses photosystem II activity, unlike antimycin A3 or myxothiazol, and recommends using AA3 and myxothiazol for specific pathways.

Directed evolution and characterisation of light harvesting complexes with altered energy transfer dynamics in purple non-sulfur bacteria

The paper creates and characterizes LH2 variants in PNSB to study energy transfer dynamics and their impact on light-harvesting efficiency and bacterial fitness.

RNA-Binding moonlighting function of metabolic enzymes reveals deep evolutionary roots in Cyanobacteria

The paper identifies RNA-binding proteins in cyanobacteria, revealing that metabolic enzymes have conserved RNA-binding functions across species.

PGR5 promotes energy-dependent non-photochemical quenching to enable efficient C4 photosynthesis under fluctuating light

This study shows that PGR5 enables efficient C4 photosynthesis under fluctuating light by supporting proton motive force and energy-dependent non-photochemical quenching.

Techniques and challenges in studying photosynthetic diversity in freshwater aquatic vascular plants

This paper reviews methods for detecting Carbon Concentrating Mechanisms (CCMs) in aquatic plants and proposes a new molecular assay for PEPC expression to better characterize photosynthetic diversity in aquatic species.

Evolutionary refinement of mitochondrial and plastid targeting sequences coincides with the late diversification of land plants

The paper investigates the evolutionary changes in mitochondrial and plastid targeting sequences in land plants, showing divergence in charge and the emergence of a phosphatase involved in targeting sequence processing.

Origin of chaperone dependence and assembly complexity in Rubisco biogenesis

The paper investigates the evolutionary origin of chaperone dependence in Rubisco biogenesis and finds that this dependence evolved neutrally and can be reversed without affecting catalytic function.

Mining thermophile photosynthesis genes: a synthetic operon expressing Chloroflexota species reaction center genes in Rhodobacter sphaeroides

The paper expresses heterologous photosynthesis genes from Chloroflexota in Rhodobacter sphaeroides to study thermophilic photosynthesis and provides metagenomic analysis of high-temperature reaction center sequences.

Structural Insights into RubisCO Dynamics and Pyrenoid Architecture in Chlamydomonas reinhardtii

The paper determines RubisCO structures in Chlamydomonas reinhardtii using CryoET, revealing their arrangement and interactions within the pyrenoid.

The protective role of chloroplast NADH dehydrogenase-like complex (NDH) against PSI photoinhibition under chilling stress

This study identifies chloroplast NADH dehydrogenase-like complex (NDH) as a protective factor against PSI photoinhibition under chilling stress by comparing two cucumber cultivars.

Structural variation at lhcb6 underlies genetic variation in photosystem II maximum quantum efficiency in maize

The paper identifies a structural variation in lhcb6 in maize landraces that affects photosystem II maximum quantum efficiency through differential accumulation of LHCII antenna components.

Chlorophyllide a oxygenase (CAO) gene duplication across the Viridiplantae

This study investigates CAO gene duplication across Viridiplantae, finding independent duplications in land plants and a conserved degron sequence in embryophytes.

Structural determinants for red-shifted absorption in higher-plants Photosystem I

The paper identifies structural determinants of far-red absorption in Photosystem I of Arabidopsis by analyzing cryo-EM structures and quantum mechanics calculations.

Cryo-EM structure of Chlamydomonas Photosystem I complexedwith the alternative electron donor cytochrome c6

The paper presents a cryo-EM structure of a Cyt c:PSI complex from Chlamydomonas reinhardtii, revealing key interactions involved in electron transfer.

Evolutionary origin and functional mechanism of Lhcx in the diatom photoprotection

This study identifies the evolutionary origin of Lhcx in diatoms and shows its role in photoprotection through non-photochemical quenching.

Sustained quenching not always means photoinhibition

The paper investigates NPQ development in aspen and Arabidopsis npq mutants under photoinhibitory and non-photoinhibitory conditions, finding that sustained quenching can occur independently of photoinhibition.

Plant MutS2 proteins function in plastid ribosome quality control

This study identifies MutS2A and MutS2B as critical for plastid ribosome quality control in Arabidopsis, resolving ribosome collisions and supporting tissue greening during de-etiolation.

Cyt b6/f Complex Fine-Tunes PSI Stability and Photosynthetic Capacity Under Fluctuating Light

This study shows that reducing Cyt b6/f content in tobacco enhances PSI protection against photoinhibition under fluctuating light but reduces electron transport capacity.

A Unique LHCE Light-Harvesting protein Family is involved in Photosystem I and II Far-Red Absorption in Euglena gracilis

This study identifies a unique Lhce light-harvesting complex in Euglena gracilis that dynamically associates with PSII and expands PSI light harvesting, revealing an alternative strategy for light acclimation in secondary plastids.

Light on its feet: Acclimation to high and low diurnal light is flexible in Chlamydomonas reinhardtii

This study shows Chlamydomonas reinhardtii can rapidly reprogram its photoprotective strategies in response to changes in diurnal light intensity, with LL-acclimated cells recovering faster than HL-acclimated cells.

Liquid-phase determination of Arabidopsis respiration and photosynthesis using Clark-type O2 electrodes

This study validates the use of Clark-type O2 electrodes to measure photosynthesis and respiration in Arabidopsis seedlings, showing their sensitivity to environmental and genetic factors.

Far-red light absorption strategies and their structural basis in Photosystem I of Acaryochloris marina NIES-2412

This study characterizes Photosystem I in a red-shifted Acaryochloris marina strain, revealing structural and spectroscopic mechanisms for far-red light absorption and the role of PsaX2 in enabling these adaptations.

Conserved spatial patterning of gene expression in independent lineages of C4 plants

This study compares single-cell transcriptomes of two independently evolved C4 dicot species to identify conserved gene expression patterns in bundle sheath cells.

Widely Used Variants of the Farquhar-von-Caemmerer-Berry Model Can Cause Errors in Parameter Estimation

The paper identifies common variants of the Farquhar-von-Caemmerer-Berry model that can introduce errors in photosynthetic parameter estimation, particularly the 'min-A variant' and omission of triose phosphate utilization thresholds.

In-cell Structure and Variability of Pyrenoid Rubisco

This study uses cryo-ET to reveal the structure and dynamics of native pyrenoid Rubisco in Chlamydomonas reinhardtii, showing variations in active site and dimer interface and associations with binding proteins.

Opposing action of photosystem II assembly factors RBD1 and HCF136 underlies light-regulated psbA translation in plant chloroplasts

This study shows that RBD1 and HCF136 opposingly regulate psbA translation in response to light-induced D1 damage in chloroplasts.

CrHCF244 is required for psbA translation in Chlamydomonas reinhardtii

This study identifies CrHCF244 as a psbA translation factor in Chlamydomonas, showing functional conservation with Arabidopsis HCF244 and suggesting alternative factors exist.

Modeling dynamic oxygen permeability as a mechanism to mitigate oxygen-induced stresses on photosynthesis and N2 fixation in marine Trichodesmium

This paper develops a model showing that dynamic oxygen permeability in Trichodesmium enhances nitrogen fixation and growth by reducing photorespiration and maintaining low intracellular oxygen levels.

RNA structure conservation in plastids across plant evolution

The paper identifies conserved RNA structures in plastid genomes across plants using a covariation-based pipeline, revealing known and novel regulatory elements.