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Ligand-gated ion channels can be desensitized to control signalling outputs. This study reports the calmodulin-mediated, Ca2+-dependent desensitization of plant GLR channels, revealing a negative feedback loop in the orchestration of plant systemic wound responses.
Plant roots can respond to the environment by modifying cell type development. Here, the molecular pathways controlling root exodermal suberin are defined, as is its role in drought response. Modulating exodermal suberin levels can be a target for improved plant environmental resilience.
Arabidopsis photoreceptor CRY2 controls chlorophyll homeostasis by blue light-induced liquid–liquid phase separation of the CRY2/SPA1/FIO1 complex, resulting in activation of the m6A writer FIO1, regulating mRNAs encoding chlorophyll homeostasis proteins.
The SCOOP signalling peptide family expands to 50 members, whose activities are strictly dependent upon the receptor kinase MIK2. Two subtilase classes process PROSCOOPs, generating bioactive SCOOP peptides. A subtilase mutant phenocopies the mik2 receptor mutant.
14C measurements show coast redwoods (Sequoia sempervirens) remobilize decades- to century-old carbon reserves to regrow leaves after a rare fire. To do so, trees resprout from dormant bud tissue maintained for centuries or more.
A comprehensive pangenome map of 22 elite tea cultivars unveils genetic variants that influence flavour, leaf colour and bud flush timing, facilitating our understanding of the molecular basis of tea quality and genomics-assisted breeding.
The genome of the Asian pitcher plant shows a decaploid structure and highlights the differential contributions of subgenomes to the evolution of novel genes, such as those associated with dioecy and trapping pitcher leaves.
To avoid autoimmunity against the microbiome, plants use PHYTOSULFOKINE RECEPTOR 1-mediated regulation of salicylic acid signalling to tune the plant growth–defence balance in response to microbiota.
This study identified two plant synaptonemal complex central element proteins—SCEP1 and SCEP2. Mutant versions of these proteins do not synapse, have more crossovers but lose crossover interference and show reduced heterochiasmy.
This study shows that the tRNA-modifying enzymes TRM1A/TRM1B are essential to attain the steady-state pool of tRNAs and reveals how they functionally cooperate with RNase P in vivo for the early steps of tRNA biogenesis in Arabidopsis.
Ji and colleagues show that the specific angiosperm growth-governing DELLA–SLY1/GID2 protein interaction evolved from a broader ancestral affinity, suggesting affinity narrowing to be a general evolutionary driver of interaction specificity.
The cryo-EM structures of SOS1 in the auto-inhibited and activated states reveal that SOS1 undergoes an inhibition–release process upon activation and uses an elevator transport mechanism for Na+/H+ exchange in response to salt stress.
This study reveals differential roles of conserved oligomeric Golgi subunits in governing Golgi integrity, particularly in prompting accelerated energy-scarcity-induced senescence and establishing a link between Golgi integrity and the cellular ageing processes.
The plasma membrane Na+/H+ exchanger SOS1 is crucial for plant salt tolerance. Here the authors report the structure of SOS1 from Arabidopsis thaliana in two conformations, which provide structural and functional insight into SOS1 activity regulation.
Martinek et al. found that the ARP2/3 complex forms spot-like structures on peroxisomes where it colocalizes and interacts with autophagosomes. Other experiments suggest that ARP2/3 is involved in pexophagy in plant cells.
The deaminases of base editors alone can induce unpredictable off-target edits. This paper describes a simple and generalizable solution for base editors containing distinct deaminases to suppress off-target edits in plant, yeast and human cells.
By editing the mitochondrial genome and screening a large number of deletion mutants, this study shows that clean knockout mutants for a mitochondrial gene can be obtained and used to construct a synthetic cytoplasmic male sterility system.
Wu et al. show that mutations of the Polycomb repressive complex 2 gene, OsFIE2, result in asexual embryo formation in rice, suggesting a critical role of the epigenetic regulation in maintaining the quiescent state of the egg apparatus.
Pre-zygotic reproductive barriers are a vital defence against interspecific pollen transfers in plants. This study shows that SPRI2/SRS7, a transcription factor, regulates the formation of interspecific reproductive barriers in Arabidopsis.
This study reveals the role played by the RNR10-DNR1-auxin module in modulating rice root system architecture and nitrogen uptake, making it a promising target for enhancing nitrogen-use efficiency and grain yield for future sustainable agriculture.