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Genomic polyploidy is prevalent in the plant kingdom, giving rise to dominant and recessive subgenomes. We show that the recessive subgenomes of the pitcher plant Nepenthes gracilis had a crucial role in the acquisition of novel genes with species-specific function such as dioecy and carnivory.
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.
This study reports the striking discovery that a water-impermeable barrier known as suberin lamellae was first evolved in the common ancestor of seed plants and contributed to their evolutionary success.
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.
Using transcriptomic data from ~100,000 informative cells, this study constructed a dynamic cell atlas during the process of de-etiolation induced by light for Arabidopsis seedlings, revealing comprehensive development responses at single-cell resolution.
We report the high-resolution cryo-electron microscopy structures of SOS1, a major determinant of salt tolerance in plants. From our structural and functional analyses, we propose a model for how the unique large cytoplasmic domain regulates the Na+/H+ exchange activity of SOS1, enhancing our understanding of the mechanisms underpinning the regulation of SOS1 activity.
The plasma membrane Na+/H+ antiporter SOS1 has a pivotal role in determining salinity tolerance in plants. This study investigates the structure and function of SOS1 from Oryza sativa (rice), elucidating its architecture and activation mechanism, with notable implications for improving crop salt tolerance.
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.