2,467 results found
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Long non-coding RNA produced by RNA polymerase V determines boundaries of heterochromatin

    Gudrun Böhmdorfer, Shriya Sethuraman ... Andrzej T Wierzbicki
    Genome-wide identification of long non-coding RNAs produced by RNA Polymerase V identifies their role in heterochromatin maintenance on the boundaries of repressed regions.
    1. Ecology
    2. Evolutionary Biology

    From Gondwana to the Yellow Sea, evolutionary diversifications of true toads Bufo sp. in the Eastern Palearctic and a revisit of species boundaries for Asian lineages

    Siti N Othman, Spartak N Litvinchuk ... Amael Borzee
    A robust framework of integrative phylogeography and advanced taxonomy to resolve the historical biogeography and species boundaries of true toads across the Eastern Palearctic.
    1. Developmental Biology
    2. Plant Biology

    Cell type boundaries organize plant development

    Monica Pia Caggiano, Xiulian Yu ... Marcus G Heisler
    Leaf position, shape and orientation are pre-patterned by cell type boundaries in the shoot meristem.
    1. Neuroscience

    Astrocyte morphology is confined by cortical functional boundaries in mammals ranging from mice to human

    Raya Eilam, Rina Aharoni ... Rafael Malach
    The structural morphology of astrocyte processes is constrained by functional boundaries in the mouse, rat and human cortex.
    1. Stem Cells and Regenerative Medicine

    Transgressions of compartment boundaries and cell reprogramming during regeneration in Drosophila

    Salvador C Herrera, Ginés Morata
    The reconstruction of damaged structures during regeneration requires cell reprogramming mediated by the up regulation of the JNK pathway and the transient debilitation of the epigenetic control mechanism.
    1. Computational and Systems Biology
    2. Developmental Biology

    Unipolar distributions of junctional Myosin II identify cell stripe boundaries that drive cell intercalation throughout Drosophila axis extension

    Robert J Tetley, Guy B Blanchard ... Bénédicte Sanson
    Analysing Myosin II unipolar planar polarisation with high spatial and temporal resolution during Drosophila axis extension reveals how tissue boundaries drive polarized cell intercalation while limiting cell mixing.
    1. Computational and Systems Biology
    2. Developmental Biology

    Noise modulation in retinoic acid signaling sharpens segmental boundaries of gene expression in the embryonic zebrafish hindbrain

    Julian Sosnik, Likun Zheng ... Thomas F Schilling
    Direct measurements of retinoic acid using fluorescence lifetime imaging reveal a new role for cellular retinoic acid binding proteins in noise attenuation that is critical to sharpen hindbrain rhombomere boundaries.
    1. Neuroscience

    Framing of grid cells within and beyond navigation boundaries

    Francesco Savelli, JD Luck, James J Knierim
    Grid-cell maps can be aligned to both local and remote reference frames, suggesting that they provide a metric for space beyond the navigationally accessible boundaries of the local environment.
    1. Neuroscience

    A generalized cortical activity pattern at internally generated mental context boundaries during unguided narrative recall

    Hongmi Lee, Janice Chen
    Prominent transitions between different mental contexts produce a stereotyped brain state shared across internally and externally generated transitions but distinct from minor within-context transitions, potentially reflecting a major flushing and updating of mental models.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Convergence of topological domain boundaries, insulators, and polytene interbands revealed by high-resolution mapping of chromatin contacts in the early Drosophila melanogaster embryo

    Michael R Stadler, Jenna E Haines, Michael B Eisen
    Fruit fly chromosomes are divided into discrete structural domains by regions of decompacted chromatin, suggesting a novel model for the formation of a known class of genetic elements.

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