Photosynthetic Processes and Mechanisms

Dynamic changes to the plastoglobule lipidome and proteome in heat-stressed maize

This study examines changes in plastoglobule lipid and protein composition in heat-stressed maize over time, identifying protective adaptations and potential targets for improving heat resilience.

A canonical chloroplast unfolded protein response triggered by misfolded polypeptides

This study identifies a chloroplast unfolded protein response (cpUPR) triggered by misfolded polypeptides, showing its role in enhancing plant fitness through proteostasis and photosynthesis.

Cryo-EM Structure of Photosystem I from mangroves in their natural environment

The paper presents a cryo-EM structure of Photosystem I from wild mangroves, revealing adaptations to harsh environments.

Two cowpea Rubisco activase isoforms for crop thermotolerance

This study identifies and characterizes two cowpea Rubisco activase isoforms, Rca10 and Rca10{beta}, which show improved thermal stability and activity, suggesting their potential for enhancing crop thermotolerance.

In vivo RUBISCO activity in Synechocystis is regulated by RuBP availability

This study shows that RUBISCO activity in Synechocystis is regulated by RuBP availability, with CP12 inactivating the CBB cycle during darkness and affecting RuBP levels.

Accessory proteins increase the efficiency of RNA editing by Arabidopsis chloroplast editosomes

The paper shows accessory proteins enhance RNA editing efficiency by increasing PPR factor affinity for target RNA in bacterial systems.

Evolution and theft: loss of state transitions in Bryopsidales macroalgae and photosynthetic sea slugs

The paper shows Bryopsidales algae lack state transitions and kleptoplasts in sea slugs also lose this ability due to structural changes during incorporation.

The new phycobilisome linker protein ApcI regulates high light adaptation in Synechocystis sp. PCC 6803

This study identifies ApcI as a phycobilisome linker protein in Synechocystis sp. PCC 6803 that regulates high light adaptation by replacing ApcG and interacting with photosystem II.

Single-nuclei sequencing of Moricandia arvensis reveals bundle sheath cell function in the photorespiratory shuttle of C3-C4 intermediate Brassicaceae

The paper uses single-nuclei RNA sequencing to study Moricandia arvensis, revealing bundle sheath cell-specific expression of photorespiration genes and associated pathways in a C3-C4 intermediate plant.

Functional relocation of the maize chloroplast atpB gene to the nucleus restores photosynthetic competence to a gene-edited non-photosynthetic mutant

Molecular underpinnings of hornwort carbon concentrating mechanisms: subcellular localization of putative key molecular components in the model hornwort Anthoceros agrestis.

This study investigates the subcellular localization of key molecular components in the hornwort Anthoceros agrestis to understand its carbon concentrating mechanism (CCM) and compare it to Chlamydomonas reinhardtii.

Transcript profiling of plastid ferrochelatase two mutants reveals that chloroplast singlet oxygen signals lead to global changes in RNA profiles and are mediated by Plant U-Box 4

This paper shows that chloroplast singlet oxygen signals in fc2 mutants alter global RNA profiles, induce stress responses, and are modulated by PUB4.

Revealing the diversity of light-harvesting antenna of in vivo photosystem I

This study uses cryogenic spectro-imaging to analyze the in vivo light-harvesting antenna diversity of photosystem I in Chlamydomonas, revealing a larger antenna system than previously resolved structures.

Prevalence of the Calvin-Benson-Bassham cycle in chemolithoautotrophic psychrophiles and the potential for cold-adapted Rubisco

This paper identifies the Calvin-Benson-Bassham cycle as the dominant chemolithoautotrophic pathway in subzero environments and explores cold-adapted Rubisco variants in psychrophilic bacteria.

Antarctic photosynthesis: energy transfer and charge separation in the diatom Chaetoceros Simplex

This study investigates energy transfer and charge separation in the cold-adapted diatom Chaetoceros simplex using fluorescence methods, revealing larger antenna sizes and absence of red chlorophylls in PSI compared to temperate species.

Transpiration, Photoinhibition and Non-photochemical Quenching Reciprocally Control Foliar Heat Emission

The paper shows that transpiration, photoinhibition, and non-photochemical quenching interact to regulate foliar heat emission, with implications for heat dissipation in forest ecosystems under global warming.

Enhancing Photosynthesis under Salt Stress via Directed Evolution in Cyanobacteria

This study uses directed evolution in cyanobacteria to identify genetic traits that enhance photosynthesis under salt stress, finding specific mutations in the PSII D1 gene improve stress tolerance.

Chloroplast cpHsc70-1 interacts with VIPP1 C-terminal tail and controls VIPP1 oligomer disassembly in thylakoid membrane remodeling

The paper identifies cpHsc70-1 as a protein that interacts with VIPP1's C-terminal tail to regulate VIPP1 oligomer disassembly during thylakoid membrane remodeling in Arabidopsis chloroplasts.

Burning glass effect of water droplets triggers an ER-derived calcium response in the chloroplast stroma of Arabidopsis thaliana leaves

The paper investigates the Ca2+ response in Arabidopsis thaliana chloroplasts triggered by high light exposure mimicked by glass beads, revealing a biphasic increase and identifying the endoplasmic reticulum as the source.

Differential effects of the D1/S264V mutation in Photosystem II with either PsbA1 or PsbA3 on QB, non-heme Iron, and the associated hydrogen-bond network

This study examines how the D1/S264V mutation affects electron transfer and iron states in Photosystem II with different PsbA variants, revealing significant functional differences.

Energy trade-offs under fluctuating light govern bioenergetics and growth in Chlamydomonas reinhardtii

This study investigates how Chlamydomonas reinhardtii adapts its bioenergetics and growth under fluctuating light conditions, revealing energy trade-offs influenced by CO2 availability.

Dynamic environments require photosynthetic electron flows with distinct bandwidths

The paper shows that photosynthetic electron flows in Chlamydomonas reinhardtii have distinct bandwidths for responding to light fluctuations, with PCEF and CMEF specialized for fast fluctuations.

Nonphotochemical quenching changes with abiotic stressor and developmental stages

The paper examines how nonphotochemical quenching (NPQ) varies with abiotic stressors and developmental stages across plant species, revealing species- and genotype-specific responses.

Structure and evolution of Photosystem I in the early-branching cyanobacterium Anthocerotibacter panamensis

This study characterizes the photosystem I structure and evolution in Anthocerotibacter panamensis, revealing distinct carotenoid composition and conserved chlorophyll site compared to Gloeobacter violaceus.

Microevolution toward loss of photosynthesis: Mutations promoting dark-heterotrophic growth and suppressing photosynthetic growth in cyanobacteria

The paper reports mutations in cyanobacteria that lead to loss of photosynthetic growth and promote dark-heterotrophic growth through a single gene mutation.

The ancient evolution of far-red light photoacclimation in cyanobacteria

This study identifies the ancient origin of far-red light photoacclimation in cyanobacteria using genomic data, showing its early evolutionary emergence and potential role in early Earth's environments.

PSII photoinhibition as a protective strategy against PSI photoinhibition: Maintaining PSI in an oxidized state by suppressing PSII activity under environmental stress

This study shows that PSII photoinhibition protects PSI from photoinhibition and ROS damage under environmental stress in plants.

Submersion and oxidative stress triggers pyrenoid formation, carbon concentration-related protein remodeling and sub-plastidial rearrangements in hornworts

This study shows submersion and hyperoxia induce pyrenoid formation and carbon concentration mechanisms in hornworts, with species-specific gene expression and structural changes.

Exploring the structural diversity and evolution of the D1 subunit of photosystem II using AlphaFold and Foldtree

This study uses AlphaFold to predict D1 subunit structures across photosynthetic organisms, revealing conserved regions and structural flexibility, and supports a phylogenetic scenario for D1 evolution.

Sustained non-photochemical quenching and regulation of PSII repair cycle during combined low temperature and high light stress in lettuce

This study investigates how lettuce plants respond to combined low temperature and high light stress by analyzing changes in non-photochemical quenching and PSII repair mechanisms.