The system that controls gene expression by the plant signaling molecule auxin has deep evolutionary roots, and stepwise increases in system complexity shaped the highly diverse auxin response in land plants.
The structure of the photosystem I (PSI) complex from Synechocystis is determined, and reaction center subunits engineered to resemble a viral PSI are found to promote promiscuous electron acceptor properties.
Zhi-Yan Du, Krzysztof Zienkiewicz ... Gregory M Bonito
The capacity for symbiosis between photosynthetic microalgae and early diverging lineages fungi was demonstrated with microscopy and stable isotope exchange of carbon and nitrogen.
The small ubiquitin-like modifier system directly regulates components of the chloroplast protein import apparatus, that is, TOC proteins, to control chloroplast biogenesis and plant development.
Tom Dierschke, Eduardo Flores-Sandoval ... John L Bowman
The ancestral mechanism to activate diploid gene expression via homeodomain transcription factors was retained in liverworts, an early diverging land plant lineage, and subsequently co-opted during evolution of the diploid sporophyte body.
Julianne M Troiano, Federico Perozeni ... Gabriela S Schlau-Cohen
Light-harvesting complex stress-related is a protein from photosynthetic green algae that prevents damage from sunlight via two distinct conformational processes, which protect against different timescales of solar fluctuations.
Jernej Turnšek, John K Brunson ... Andrew Ellis Allen
An iron-sensitive gene cluster encodes proteins that co-localize with phytotransferrin endosomes and are involved in key intracellular iron transformation and trafficking processes in a model marine diatom.
The necessity of studying extremophile organisms is exemplified by the structure of photosystem I from a high-light tolerant cyanobacteria, demonstrating the relationship between the structure and function in photosystem I.
