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The endosperm is a seed tissue that supports the embryo. In most flowering plant species, the endosperm starts as a coenocyte that cellularizes after a defined number of mitotic divisions. We show that endosperm cellularization is under antagonistic parental control mediated by a family of maternally expressed auxin response factors.
This study reports the structure of a photosystem I assembly intermediate isolated from greening oat seedlings. It defines PsaF as a regulatory checkpoint promoting the association of LHCI that couples biogenesis to function.
Analyses of three newly sequenced modern cultivar cotton genomes revealed sequence and structural variation alongside traces of ancient and ongoing introgressions. Moreover, transcriptome analysis pointed at unique fibre quality traits of cultivars.
In most flowering plants, early divisions of endosperm nuclei are not succeeded by cellularization. This study uncovered a family of clustered auxin response factors as dosage-sensitive, maternally expressed regulators of endosperm cellularization.
Creation of a plastid genome without an inverted repeat in Nicotiana tabacum reveals a role for the inverted repeat in gene dosage and the regulation of replication by total DNA content rather than copy number.
Removing the large inverted repeat region from the chloroplast genome revealed a gene dosage benefit for the ribosomal RNA operon. The reduced genome size resulted in increased genome copy numbers and offers potential for synthetic biology.
The nuclear pore is known as a large protein complex for the transport of macromolecules between the nucleus and the cytoplasm. Comprehensive proteomic analyses revealed a novel role of the nuclear pore complex as a platform for the coordinated regulation of the flow from transcription to translation.
Tang et al. utilized proximity labelling to assemble the Arabidopsis nuclear pore-associated proteome and revealed the nuclear pore as an integrated platform coupling multiple steps in gene expression regulation, beyond its conventional transport role.
Quan et al. show that warming-induced changes in plant community height in a cold, high-elevation region enhance ecosystem carbon sequestration, emphasizing the importance of plant traits in shaping the carbon cycle under climate change.
The authors integrate spatial (Stereo-seq) and single-cell transcriptomes of the developing maize ear to produce an atlas of maize ear cells and their developmental trajectories. They also identify a pair of transcription factors involved in inflorescence development.
Wang and colleagues report a two-dimensional root carbon trait space coupled with the root economics space, offering molecular insights into the great diversity of root form and function.
Abiotic stresses challenge plant growth. In response, plants often rapidly accumulate proline. This study reveals the filament structures of plant P5CS, the key enzyme in proline synthesis, elucidating a unique mechanism for its efficient catalysis.
This study shows that optimizing soybean nodulation, rather than supernodulation, through editing improves N and C assimilation by balancing source–sink relationships. As a result, soybean yield and protein content are simultaneously increased in field conditions.