Photosynthetic Processes and Mechanisms

Role of CIA2 and CIL in the regulation of chloroplast photomorphogenesis in Arabidopsis

This study shows that CIA2 and CIL are involved in chloroplast biogenesis and photomorphogenesis in Arabidopsis by affecting PSII assembly and gene expression during de-etiolation.

A holistic quantitative understanding of state transition in plant photosynthesis.

The paper quantitatively examines state transitions in plant photosynthesis, showing how LHCII redistribution balances electron fluxes between PSII and PSI through phosphorylation and thylakoid unstacking.

Natural genetic and transcriptomic variation in photosynthesis associated pathways contribute to adaptive traits variation in worldwide Arabidopsis thaliana population

The paper identifies genetic and transcriptomic variations in photosynthesis-related genes across Arabidopsis thaliana populations and links them to adaptive trait variation.

Lhcf9 is a novel negative regulator of non-photochemical quenching in the diatom Chaetoceros gracilis

This paper identifies CgLhcf9 as a negative regulator of energy-dependent NPQ in the diatom Chaetoceros gracilis, showing it suppresses NPQ under specific light and CO2 conditions to improve growth.

A nuclear CobW/WW-domain factor represses the CO2-concentrating mechanism in the green alga Chlamydomonas reinhardtii

This paper identifies CBP1 as a nuclear repressor of the CO2-concentrating mechanism (CCM) in Chlamydomonas reinhardtii, showing it suppresses CCM activity when CO2 is abundant.

Functional characterisation of bicarbonate transporters from the cyanobacterial SbtA2 family and subsequent expression in tobacco

The paper functionally characterizes SbtA2 bicarbonate transporters from marine cyanobacteria and attempts to express them in tobacco chloroplasts without improving photosynthesis.

Atypical chlorotic plants as a tool for studying more severe Cd effect on photosystem I, non-photochemical quenching, K content, and stomatal conductance.

The paper examines how Cd treatment affects photosystem I, non-photochemical quenching, K content, and stomatal conductance in barley plants, finding that these effects are more pronounced in atypical chlorotic plants.

Paradoxical energetics in the polar diatom Fragilariopsis cylindrus exposed to extreme low light

This study examines how the polar diatom Fragilariopsis cylindrus adapts to extreme low light by revealing distinct physiological strategies and energy dissipation mechanisms.

Sticker number modulates pyrenoid condensate assembly to support algal fitness

This study shows that varying the number of binding motifs in a disordered protein affects pyrenoid assembly and algal fitness.

Charge reversal at the Lhcb2 N-terminus impairs phosphorylation and PSI-LHCII complex formation

This study shows that a negative charge at the Lhcb2 N-terminus impairs phosphorylation and PSI-LHCII complex formation in Arabidopsis, while a downstream charge has no effect.

The GT1 domain of RNase J ensures RNA quality control through dsRNA binding in Arabidopsis plastids

This study investigates the role of the GT1 domain in Arabidopsis RNase J by showing it binds dsRNA and DNA, affects enzyme solubility, and is critical for dsRNA removal in plastids.

Estimating the redox state of the plastoquinone pool in algae and cyanobacteria via OJIP fluorescence: perspectives and limitations

This paper evaluates the OJIP fluorescence method for semi-quantitative estimation of PQ-redox in algae and cyanobacteria, showing its applicability to both dark- and light-acclimated samples.

Client distribution between Chlamydomonas FDX1 and FDX2 in carbon, nitrogen and sulfur assimilation

The paper investigates the functional distribution of FDX1 and FDX2 in Chlamydomonas, showing their distinct roles in carbon, nitrogen, and sulfur assimilation through mutant analysis.

Proton channel inactivation results in loss of chloroplast NDH complex activity

This study shows that mutating the ndhF gene in plants disrupts the NDH complex's proton channel, leading to loss of plastoquinone reductase activity and altered pH-dependent feedback regulation.

Prime editing of an evolutionarily informed PEPC residue enhances photosynthesis and grain nutrition in C₃ rice

This study uses prime editing to modify a conserved residue in PEPC of rice, enhancing photosynthesis and grain nutrition.

Biosynthesis of minimal C-phycocyanin chromophore assemblies in E. coli provides a platform to dissect protein-mediated tuning of exciton transfer

Dark-induced inactivation of the carbon assimilation process requires a water water cycle driven oxidative burst

The paper identifies the water-water cycle as the source of oxidative equivalents driving dark-induced inactivation of carbon assimilation through an oxidative burst linked to PSI activity.

Correlated evolutionary rates reveal novel components and cross-compartment connectivity in plant proteostasis systems

The paper uses evolutionary rate covariation to identify a novel plant proteostasis module involving non-plastid-localized proteins.

A chloroplast-localized protein AT4G33780 regulates Arabidopsis development and stress-associated responses

This study identifies AT4G33780 as a chloroplast-localized protein that modulates Arabidopsis development and stress responses through metabolic coordination.

Is constitutive red-shift an advantage for oxygenic photosynthesis under M-dwarf starlight? Insights from Acaryochloris marina sp. str. Moss Beach

The paper tests if a constitutively red-shifted photosynthetic apparatus in Acaryochloris marina can thrive under M-dwarf starlight, showing enhanced growth and oxygen production.

Membranous interacting partners of phage-type plastid RNA polymerase have limited impact on plastid gene expression during chloroplast development

This study investigates the role of RPOTmp and NIPs in plastid gene expression during chloroplast development in Arabidopsis, finding that RPOTmp activity is stable and NIPs have limited impact.

Chloroplast-mitochondria synergy modulates responses to iron limitation in two Thalassiosira diatom species

This study compares how two Thalassiosira diatom species respond to iron limitation by examining chloroplast-mitochondrial coupling through proteomics and imaging.

Heterologous expression in E. coli reveals the bicarbonate transporter BicA2 drives carbon uptake in marine Prochlorococcus spp.

This study functionally characterizes BicA2 as a Na+-dependent bicarbonate transporter in Prochlorococcus, revealing a previously uncharacterized component of its CO2-concentrating mechanism.

Diversity in Rubisco Kinetics and CO2-Concentrating Mechanisms Among Cyanobacterial Lineages

The paper examines Rubisco kinetics and CO2-concentrating mechanisms across cyanobacterial lineages, finding lineage-specific differences and a common pattern of high catalytic turnover with low CO2 affinity.

Arabidopsis SUFB and CLP protease regulate SUFBC2D to manipulate iron-sulfur cluster biosynthesis in chloroplast

This study shows SUFB stabilizes SUFC and SUFD to form SUFBC2D, and SUFB is downregulated during iron deficiency, leading to degradation of the complex.

Temporal structure of chemical stress controls single-cell inhibition and recovery in photosynthetic microorganisms

The paper shows that fluctuating chemical stress causes stronger initial inhibition but allows partial recovery in some cells of a microalga, revealing that stress timing affects single-cell reversibility.

Atomic resolution structure of spinach rubisco reveals protons and dynamics

The paper presents an atomic structure of spinach rubisco with a transition-state analogue, revealing protonation dynamics and structural flexibility, suggesting new strategies for enzyme redesign.

A photoprotection dial maps holistic light-stress response in diatoms

This study uses a photoprotection dial in diatoms to map light-stress responses, showing NPQ influences both short-term photosynthetic adjustments and long-term gene expression changes.

The yellow-in-the-dark chIL Chlamydomonas mutant as a model for time-resolved chloroplast biogenesis and physiological responses to lincomycin

The paper characterizes the chIL mutant of Chlamydomonas to study light-induced chloroplast biogenesis and lincomycin's effects on chloroplast physiology.

Structures of the LPOR-Chlide Complexes Imply the Basis of Membrane Remodeling and a Photocatalytic Mechanism

This study uses cryo-EM to determine the structure of LPOR-Chlide complexes, revealing a novel photocatalytic mechanism and structural basis for membrane remodeling.