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Cryptochromes (CRYs) perform various functions in both plants and animals, including photoperception and circadian regulation. Now it is shown in Arabidopsis that blue light induces liquid–liquid phase separation of CRY2, co-condensing the interacting m6A writer and altering epitranscriptome with respect to the circadian clock.
This study shows that miRNAs produced by plants act as signalling molecules that affect gene expression in nearby plants. This RNAi induced by exogenous miRNAs enables communication between plants and requires the production of secondary siRNAs.
The coat protein complex II (COPII) is a type of specialized vesicle coat protein that mediates vesicle trafficking from the endoplasmic reticulum (ER) to the Golgi apparatus. A population of giant COPII vesicles is identified and shown to be produced in response to the plant hormone abscisic acid (ABA) and abiotic stresses in Arabidopsis.
Despite, and perhaps because of, extensive data regarding agricultural variables and plant traits, finding connections to crop yields can be difficult to compile. Machine learning models detailed here can provide accurate predictions to tease out behaviours.
In plant miRNA biogenesis, DCL1 cleaves pri-miRNA and pre-miRNA sequentially. This study reports the cryo-EM structures of Arabidopsis DCL1 complexed with the two substrates and uncovers the domains that are key for substrate recognition and transfer.
Sugar transport proteins (STPs) that are responsible for glucose uptake in plant cells play fundamental roles in plant growth, development and stress responses. High-resolution structures of Arabidopsis STP10 with glucose and protons bound are now resolved at two conformations, outward-occluded and inward-open, providing a general model for proton/glucose symport in STPs.
This study of 4,000-year-old Egyptian yarn examines the cellular nature of the flax fibres to investigate their durability and integrity, as well as their differences from modern flax.
The temperature sensitivity of a chloroplast signal recognition particle complex provides thermoprotection for tetrapyrrole biosynthesis proteins, protecting several proteins from heat-induced aggregation during the assembly of chlorophyll-binding proteins.
A high-quality genome of Aristolochia fimbriata illuminates its unique history of whole-genome duplication similar to Amborella, the genomic basis of its complex flower morphology and chemical biosynthesis, and the phylogenetic placement of magnoliids.
Analyses of four International Maize and Wheat Improvement Center global spring wheat trial datasets showed that genotype–environment interactions have changed over recent decades and crossover interactions have increased, largely owing to climatic factors, making breeders’ decision-making harder.
RNA-labelling technologies for quantitative imaging of RNA polymerase II activity are used to capture real-time transcription in single cells of living tobacco and Arabidopsis plants and to investigate the single-cell basis of tissue-wide transcriptional dynamics in response to heat shock.
A method to label and visualize nascent RNA allows real-time study of transcriptional dynamics at single-cell resolution in vivo. The approach is used to study transcriptional repression of the SPX1 gene by phosphate in Arabidopsis roots.
Phytochrome B was found to directly trigger light-dependent chromatin remodelling by physically interacting with a component of PRC2, thereby regulating the expression of target genes, including growth-promoting genes.
p-Hydroxybenzoylation is a common type of lignin modification but its catalytic mechanism and physiological relevance are unclear. An enzyme that catalyses lignin p-hydroxybenzoylation in poplar sheds light on the role of this specialized modification.
Could plant stem cells be maintained by a constitutive endogenous stress? It is shown here that components of the ethylene signalling pathway are involved in Arabidopsis shoot stem cell maintenance, through the transcription factor AGL22.
Field photographs are essential for research and conservation, but are difficult to access since there is no central database or connection between archives. The 25 leading databases hold only 53% of the plant species of the Americas, illustrating the need for increased work on collecting and standardizing this valuable data.
The Arabidopsis leucine-rich repeat receptor-like protein RLP42 perceives a 9-amino-acid peptide contained in a fungal endopolygalacturonase. Other Brassica species perceive different epitopes, highlighting rapid and convergent evolution to ensure immunity against pathogenic microbes.
An expanded OnGuard platform incorporates feedback between CO2 concentration, photosynthesis and stomatal dynamics to connect molecular mechanisms with gas exchange in the leaf. Modelling and experimental data highlight the importance of intracellular calcium stores and calcium pumps in a response latency with environmental fluctuations.
Do simple leaves have the potential to become compound leaves? In Arabidopsis, the combined action of CINCINNATA-like TEOSINTE BRANCHED1, CYCLOIDEA, PROLIFERATING CELL FACTORS (CIN-TCP) transcription factors and class II KNOTTED1-LIKE (KNOX-II) transcription factors suppresses leaflet initiation in simple leaves. Downregulation of these genes leads to super-compound leaves.