Photosynthetic Processes and Mechanisms

Dim blue light drives reversible fucoxanthin derivative accumulation in the pelagophyte Pelagomonas calceolata

This study shows that dim blue light causes reversible accumulation of 19'-BFx in Pelagomonas calceolata, highlighting its role in photoacclimation.

Neofunctionalised plastid translocon regulates chloroplast ageing in Arabidopsis

This study identifies Toc90 as a neofunctionalised plastid translocon component that regulates chloroplast ageing in Arabidopsis, with implications for crop productivity.

Multiomics dissection of the CO2-dependent fast growth of Picochlorum celeri

This study profiles multi-omics data in Picochlorum celeri under CO2 limitation, revealing a CO2-dependent switch in Rubisco subunits and extensive post-translational modifications.

COMPARATIVE PHENOMICS IN Limnospira platensis STRAINS REVEALS PHOTOBIOENERGETIC SIMILARITIES AND DIFFERENCES IN AMERICAN AND AFRICAN STRAINS

This study compares phenotypic differences in Limnospira platensis strains from America and Africa under controlled and fluctuating light conditions, revealing variations in growth and light stress response mechanisms.

Architecture and Energy Transfer of the Bacterial Photosynthetic Unit

This study reports cryo-EM structures of bacterial photosynthetic supercomplexes and identifies energy transfer pathways within them.

Shifts in high-light acclimation strategies associated with molecular evolutionary rates in duckweeds

The paper investigates how molecular evolutionary rates in duckweeds correlate with acclimation strategies to high light, finding differences in mutation rates and metabolic adaptations between lineages.

Evolution of form I-related RuBisCOs updated: Uncertainties and diversity encompassing Bacteria and Archaea.

This study updates the understanding of form I-related RuBisCOs by analyzing their phylogenetic relationships and identifying a form I RuBisCO gene in an archaeal MAG, highlighting uncertainties in their evolutionary history.

A novel class of conserved sucrose-phosphate phosphatases highlights the diversity of cyanobacterial sucrose metabolism

This study identifies a conserved SPP-like phosphatase in cyanobacteria that can dephosphorylate sucrose 6-phosphate and 3-phosphoglycerate, suggesting broader substrate specificity than canonical SPP proteins.

Acclimation to enhanced photorespiratory conditions increases the effectiveness of C2 photosynthesis in C3-C4 intermediates

The paper shows that acclimation to higher photorespiratory conditions enhances C2 photosynthesis in sub-C2 and C2 species but not in C3 or proto-Kranz species.

Multi-omics dissection of transcriptional and post-transcriptional responses in cyanobacterial high-light adaptation

This study identifies how specific point mutations in cyanobacteria enhance high-light tolerance through coordinated transcriptional and post-transcriptional responses.

Model-assisted high-throughput phenotyping of photosynthetic acclimation

The paper presents a computational pipeline that estimates dynamic nitrogen allocation in photosynthesis using optical sensing and a mechanistic model, validated against gas-exchange measurements in wheat.

The PSI-NDH supercomplex prevents chilling-induced PSI photoinhibition

This study shows that NDH is essential for protecting PSI from chilling-induced photoinhibition in rice and cucumber, and that chilling destabilizes the PSI-NDH supercomplex.

Development of a Wearable Sensor-PAM for Continuous Monitoring of Photosynthetic Dynamics

The paper develops a wearable Sensor-PAM system for continuous chlorophyll fluorescence monitoring of photosynthetic dynamics in plants, showing strong correlation with conventional measurements and real-time response tracking.

Intercellular Concentration Gradients of 3-Phosphoglycerate and Triose-Phosphate Demonstrate Operation of an Energy Shuttle in NAD-Malic Enzyme and Phosphoenolypyruvate Carboxykinase C4 Subtypes

The paper demonstrates that NAD-ME and PEPCK C4 plant subtypes use an intercellular energy shuttle involving 3-phosphoglycerate and triose phosphate gradients between bundle sheath and mesophyll cells.

Tissue-resolved photosynthetic responses in living leaves revealed by microscopic imaging-pulse-amplitude-modulation

The paper uses imaging-pulse-amplitude-modulation to analyze tissue-specific photosynthetic responses in living leaves, revealing spatial organization of photochemical properties according to leaf anatomy.

Cyanophage CP12 Rewires Host Carbon Regulation through Interface Remodeling and Redox Buffering

This study investigates how cyanophage CP12 modulates host carbon regulation by remodeling interfaces and buffering redox changes during infection.

Mutation of a conserved stromal C-terminus threonine residue of Photosystem II subunit S slows down NPQ induction and speeds up relaxation.

This study shows that mutating threonine-259 in PsbS affects NPQ induction and relaxation rates in Arabidopsis thaliana.

ACHT2 deactivates carbon assimilation during light-dark transition

This study identifies ACHT2 as a key regulator of Calvin-Benson cycle inactivation during light transitions in plants, showing its specific role in redox-mediated bottlenecks without affecting plant fitness.

The fitness landscape of a Form II Rubisco in a photosynthetic bacterium guides engineering of oxygen tolerance

The paper screens variants of a Form II Rubisco to improve oxygen tolerance, identifies key mutations, and uses a transformer model to guide engineering.

A CO2-limitation-induced cytosolic repressor enables shutdown of the algal CO2-concentrating mechanism

This study identifies HCR1 as a cytosolic repressor that enables shutdown of the algal CO2-concentrating mechanism under high CO2 conditions.

OsPATROL1 overexpression accelerates stomatal opening to enhance photosynthetic induction and growth under fluctuating light in rice

This study shows that overexpressing OsPATROL1 in rice speeds up stomatal opening, improves photosynthetic induction, and boosts growth under fluctuating light without reducing water-use efficiency.

Complementation of a Setaria Rubisco activase mutant with Agave Rubisco activase restores growth and photosynthesis

This study replaces the Rubisco activase in a C4 plant with a thermally stable variant from a CAM plant, improving carbon assimilation under heat stress but not long-term heat.

Can small reductions in Rubisco content improve nitrogen use in wheat without negatively impacting biomass or grain yield?

This study reduces Rubisco in wheat using RNAi to test if nitrogen use efficiency can improve without affecting biomass or yield, but finds no improvement in nitrogen use efficiency despite similar biomass in some lines.

CurT dosage quantitatively affects thylakoid structure and PSII performance in Synechocystis sp. PCC 6803

This paper quantifies how CurT protein levels affect thylakoid structure and PSII performance in Synechocystis sp. PCC 6803, revealing a logarithmic relationship between CurT abundance and photosynthetic efficiency.

Moderate overexpression of PROTON GRADIENT REGULATION 5 improves photosynthetic performance and plant growth under fluctuating low light in Arabidopsis thaliana

This study shows that moderate PGR5 overexpression improves photosynthesis and growth under fluctuating low light, while excessive expression harms plant performance.

A century of soybean breeding increased photosynthetic capacity but not NPQ relaxation

This study shows that a century of soybean breeding increased photosynthetic capacity but not NPQ relaxation, suggesting a need for targeted improvements in photoprotective regulation.

Euchromatin Peripheral Organization Follows Anterograde Signalling Under Anaesthetic Stress

The paper examines how chloroplast dysfunction and anaesthesia affect euchromatin and heterochromatin organization in tomato seedlings, revealing anaesthesia-induced chromatin changes independent of chloroplast status.

Interval-zone free-flow electrophoresis as a charge-specific dimension for native isolation of thylakoid membrane protein complexes

This paper introduces interval-zone free-flow electrophoresis (iZE-FFE) as a charge-based method to isolate thylakoid membrane protein complexes, showing it separates them more effectively than traditional SDS-PAGE.

Four numbers, one axis: deep learning models reveal what leaf spectrum constrains about Farquhar-von Caemmerer-Berry photosynthesis

The paper evaluates how well leaf spectra can recover Farquhar-von Caemmerer-Berry parameters using deep learning, finding limited transferability across datasets but consistency within species.

NTMC2T5 links lipid homeostasis to plastid differentiation.

This study identifies NTMC2T5 as a key regulator of lipid homeostasis during plastid differentiation, linking it to chloroplast membrane biogenesis and ER-plastid lipid exchange.