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A cryo-EM structure of a photosystem I supercomplex, PSI–LHCI–LHCII–Lhcb9, from the moss Physcomitrium patens, shows its Lhcb9-mediated assembly via an intermediate form containing large amounts of light-harvesting complexes I and II.
This study reveals that short-term acute heat stress causes vacuolation of the Golgi apparatus, whereafter autophagy-related protein 8 (ATG8) translocates to the cisternal membrane and recruits CLATHRIN LIGHT CHAIN 2 (CLC2) to facilitate Golgi reconstruction by promoting the budding of ATG8-positive vesicles.
NPF8.4 is responsible for sequestering the photorespiratory carbon intermediate glycerate into vacuoles. This study of NPF8.4 has identified the role of photorespiration in N fluxes in response to short-term N depletion.
Mutant combinations of four AUXIN RESPONSE FACTORs in tomato by CRISPR–Cas9 technology reveal their dual function in inhibiting fruit set before pollination while activating fruit growth after fertilization.
A CRISPR–Cas12a promoter editing system enabled efficient engineering of quantitative trait variations of grain starch and seed size in rice, and achieved an innovative Green Revolution trait through editing of the OsD18 promoter.
The authors identified a sub-clade of NPF transporters that orchestrates GA12 long-distance shoot-to-root translocation. Once in the phloem unloading zone, ABA and GA are loaded into pericycle vacuoles and then slowly released to induce endodermal suberin formation in the maturation zone.
Balance between growth and stress response is critical for plants to adapt to high salinity. This study shows that receptor-like kinase FERONIA takes advantage of phyB-mediated light signalling pathway to coordinate plant growth and salt tolerance.
Plant sigma factors are nuclear-encoded regulators of plastid transcription. A nuclear-encoded sigma factor integrates low-temperature and circadian signals, contributing to photosynthetic resilience to long-term cold.
Auxin is a key regulator in vascular cambium development. This study shows that gibberellins promote polar auxin transport along the root, which leads to broadening of high auxin signalling domain in cambium, and thus, to increased xylem formation.
The sugarcane relative, Erianthus rufipilus, is one of the rare diploid species within the Saccharum complex. Its gap-free genome reveals centromere diversification, epigenetics of a palaeo-duplicated chromosome and evolution of Saccharum.
The study describes the development and validation of Multi-Knock, a genome-scale clustered regularly interspaced short palindromic repeat toolbox that overcomes functional redundancy in plants by simultaneously targeting multiple gene-family members, thus identifying genetically hidden components.
Dawe et al. report a protein tethering method for recruiting Centromeric Histone H3 to synthetic repeat arrays. Newly recruited Centromeric Histone H3 organized functional centromeres that supported independent chromosome segregation for several generations.
This study identified two dirigent proteins responsible for the biosynthesis of the two enantiomers of gossypol in cotton. Editing one of the dirigent proteins selectively removed the toxic (−)-gossypol in cotton seeds without affecting pest resistance.
A recent study using genomic modelling has uncovered the complex population history of wheat in the Holocene, identified convergent adaptation during bread wheat’s spread across Eurasia and predicted future population decline of its key relatives.
TurboID-based proteomic profiling of meiotic chromosome axes in Arabidopsis enables identification of proximate proteins in rare cell types such as meiotic cells. Among 39 ASY1 and/or ASY3 proximate proteins known and new meiotic proteins were found.
The global distribution of tree species shows obvious edges corresponding to the boundaries of biomes due to high spatial climate heterogeneity. The poleward migration of tree species as a result of climate change will be hindered by steep climatic gradients.
Using a gain-of-function method, this work identified 14 plant proteins that can repress gene expression via diverse epigenetic pathways, including DNA methylation, histone modifications and interference of RNA polymerase II transcription.
A plant-specific GCN5-containing histone acetyltransferase complex, which was termed PAGA, cooperates with the conserved GCN5-containing SAGA complex to regulate histone acetylation, transcription and development.
The authors present a multidisciplinary approach investigating the mechanistic underpinnings of galactan synthase 1 and use their data to propose a new model for complex pectin biosynthesis.
A chitinase gene is responsible for the hybrid necrosis between two young Petunia species. This gene is tightly linked with genes in pollinator-mediated reproductive isolation, suggesting cooperation of pre- and post-zygotic barriers.