Growth is driven by cell expansion, which is driven by both synthesis of metabolites and osmotically-driven expansion. This latter contribution is typically overlooked in metabolic flux analysis. To remedy this, Shameer et al. have developed a model, GrOE-FBA (Growth by Osmotic Expansion- Flux Balance Analysis). By combining previously described osmotic constraints with biomass constraints, they […]
Grasses scatter their seeds through the process of cell abscission. Losing this trait, in a process known as loss of shattering, was an early step in the domestication of cereals. Interestingly, the abscission zone (AZ) is positionally and morphologically different in different cereals. In order to understand the diversification of this trait, Yu et al. […]
Review: Developmental thermal responses in Arabidopsis Plants can modify their growth in response to environmental challenges. In a recent review, Vu et al. summarize the molecular mechanisms underlying high temperature responses during the Arabidopsis life cycle. At early stages, high temperature promotes abscisic acid (ABA) biosynthesis and decreases gibberellic acid biosynthesis, resulting in germination inhibition. […]
In recent months, a flurry of papers have come out that reveal new insights into the structural interactions of cell-surface receptors with each other and with their ligands. This timely review by Moussu and Santiago captures the highlights, in case you haven’t been following along. The review features the BRI1 brassinosteroid receptor and its toggling […]
Cyanobacteria are important contributors to global carbon fixation. They can be free-living in many different environments, but also form close symbiotic associations with various eukaryotic organisms. Nakayama et al. have idea identified a new type of cyanobacteria that lives as an ectosymbiont in a specialized extracellular chamber of a marine dinoflagellate. This new cyanobacterium, which […]
Plant fibres from crops such as flax and hemp have diverse uses from rope to clothing, and are increasingly being incorporated into eco-friendly biocomposite materials. These long, flexible, useful fibres, called “bast” fibres, are not derived from the xylem, but instead are derived from specialized cells located interior to the epidermis. Stinging nettle (Urtica dioica […]
Review: Structural biology of cell surface receptor–ligand interactions In recent months, a flurry of papers have come out that reveal new insights into the structural interactions of cell-surface receptors with each other and with their ligands. This timely review by Moussu and Santiago captures the highlights, in case you haven’t been following along. The review […]
The corn we eat is a seed, which is a product of fertilization. It is widely known that corn yields are highly susceptible to abiotic stress conditions that occur during the repdroductive stage of development. Begcy et al. used a metabolomic / transcriptomic approach to understand why transient heat stress (particularly during meiosis) is so […]
Physcomitrella STEMIN transcription factor induces stem cell formation with epigenetic reprogramming Insights into transcription factors (TFs) in non-flowering plants are increading thanks to the establishment of new bryophyte model organisms. In new work, Ishikawa et al. present STEMIN1, a Physcomitrella patens TF belonging to an uncharacterized subgroup of the AP2/ERF family. Physcomitrella undergo cell reprogramming […]