Lauri Nikkanen

PGR5 is needed for redox-dependent regulation of ATP synthase both in chloroplasts and in cyanobacteria

This study shows PGR5 regulates ATP synthase activity in photosynthetic organisms under fluctuating light through a thiol redox mechanism, contributing to photoprotection.

A conserved photosynthetic cytochrome enhances growth of Chlamydomonas reinhardtii in fluctuating light

This study shows that cytochrome c6A enhances growth of Chlamydomonas reinhardtii under fluctuating light by maintaining light harvesting balance between photosystems I and II.

Mitochondria affect photosynthesis through altered tissue levels of oxygen

The paper investigates how mitochondrial function affects photosynthesis by altering tissue oxygen levels in Arabidopsis, showing that increased mitochondrial oxygen consumption reduces chloroplast oxygen availability.

Daily Heat Stress Induces Accumulation of Non-functional PSII-LHCII and Donor-side Limitation of PSI via Downregulation of the Cyt bf Complex

This study shows that prolonged heat stress in Arabidopsis thaliana reduces cytochrome b6f complex content, leading to donor-side limitation of PSI and lower carbon assimilation.

The role of the LysR-type transcription factor PacR in regulating nitrogen metabolism in Anabaena sp. PCC7120

This study investigates the role of PacR in nitrogen metabolism in Anabaena sp. PCC7120, showing that its deletion leads to heterocyst formation, reduced growth, and impaired nitrogen assimilation.

Plastoquinone redox status influences carboxysome integrity via a RpaA- and ROS-dependent regulatory network

The paper shows that plastoquinone redox status affects carboxysome integrity through a RpaA- and ROS-dependent network in cyanobacteria.

Strong heterologous electron sink outcompetes alternative electron transport pathways in photosynthesis

The paper demonstrates that a heterologous electron sink outcompetes natural electron transport pathways in engineered cyanobacteria, revealing FNR as the preferred route for electron delivery and highlighting the NADPH/NADP+ ratio's role in electron flux.

RCD1 Coordinates Chloroplastic and Mitochondrial Electron Transfer through Interaction with ANAC Transcription Factors

The paper shows RCD1 interacts with ANAC transcription factors to regulate chloroplastic and mitochondrial retrograde signaling via ROS-dependent mechanisms.