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Splicing of transcripts containing micro and small exons requires specific factors. This study shows that GRP20 regulates micro- and small-exon retention of transcripts including floral homeotic genes, whose splicing is crucial for flower development.
Visualizing cellular Pi distribution is crucial for the understanding of Pi signalling and homeostasis in plants. Here Guo et al. developed a rapid colorimetric Pi imaging method to reveal the intracellular Pi distribution and related regulators.
In this study, De Niu et al. report a two-step molecular mechanism, embryonic resetting of cold-induced TaVRN1 activation and subsequent TaVRN2 reactivation by light during seed germination, to re-establish vernalization requirements in wheat.
Using an mRNA live-imaging system, Luo and colleagues show that Arabidopsis rotamase cyclophilins specifically bind mobile mRNAs and hitchhike on organelle trafficking to transport intercellularly towards plasmodesmata.
Loading of specialized metabolites from maternal tissue into embryo requires coupled export and import processes. Using glucosinolate seed loading as a model, this study identified four critical barriers along the transport route from source to sink.
The microtubule-associated protein MIDD1 fine-tunes the secondary cell wall patterns in xylem vessels by forming co-condensates with KINESIN-13A, which induces the massive catastrophe of microtubules, in Arabidopsis thaliana.
Cuticular wax is crucial for plant development and environmental interaction. This study reveals the negative impact of nitrogen on cuticular wax via MdBT2–MdMYB106–MdCER2L1, thus uncovering a novel pathway for N-mediated wax biosynthesis in apple.
In this study, Gómez-Fernández and colleagues show that crops were selected from wild progenitors with productive ecophysiological traits, conflicting with the hypothesis that these resource-acquisitive traits are a result of human domestication.
Xu et al. report structures of the Arabidopsis cytokinin importer AZG1 in the apo, trans-zeatin-bound, 6-benzyleaminopurine-bound and kinetin-bound states, and elucidate an elevator transport model for the AZG1-mediated cytokinin uptake.
Feng and Zhang et al. develop a micrografting technique for conifer trees allowing distant relatives to join. Grafting in conifers uses a similar process to that in eudicots, and by introducing a conifer graft regulator to Arabidopsis, grafting and regeneration are enhanced.
This study demonstrates an efficient method for capturing key regulators of target genes named CASPA–dCas9. With this method, the authors uncover the precise regulatory mechanism and key factors controlling SERRATE expression in Arabidopsis.
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.