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    1. Developmental Biology
    2. Evolutionary Biology

    Evolution of Segmentation: Sox enters the picture

    Felix Kaufholz, Natascha Turetzek
    The discovery of a gene that regulates two segmentation mechanisms in spider embryos is fueling the ongoing debate about the evolution of this crucial developmental process.
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    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Cutting Edge: Building bridges between cellular and molecular structural biology

    Ardan Patwardhan et al.
    The integration of structural data from different imaging scales requires the development of standards and tools for representing the segmentation and transformation of data, and for the annotation of biological structures.
    1. Neuroscience
    2. Computational and Systems Biology

    Dynamic structure of locomotor behavior in walking fruit flies

    Alexander Y Katsov et al.
    A principled statistical segmentation of fruit fly walking leads to a compact model of immediate actions that can reproduce the unique behavioral sequences of individual flies.
    1. Developmental Biology
    2. Evolutionary Biology

    A SoxB gene acts as an anterior gap gene and regulates posterior segment addition in a spider

    Christian Louis Bonatto Paese et al.
    Sox21b-1 regulates simultaneous formation of anterior segments and addition of posterior segments in a spider, which resembles segmentation in long- and short-germ insects, and suggests SoxB regulation of segmentation is an ancestral feature of arthropods.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Introgression of regulatory alleles and a missense coding mutation drive plumage pattern diversity in the rock pigeon

    Anna I Vickrey et al.
    Different kinds of molecular changes at one genetic locus control different feather pigmentation patterns, and the darkest patterns resulted from hybridization with another species.
    1. Plant Biology

    Automated quantitative histology reveals vascular morphodynamics during Arabidopsis hypocotyl secondary growth

    Martial Sankar et al.
    Combining high-resolution imaging with automated image segmentation and supervised machine learning achieves accurate cellular feature extraction and automated cell type recognition in a large-scale developmental process.
    1. Cell Biology
    2. Neuroscience

    Speed and segmentation control mechanisms characterized in rhythmically-active circuits created from spinal neurons produced from genetically-tagged embryonic stem cells

    Matthew J Sternfeld et al.
    Stem cell derived ventral-spinal cord excitatory neurons self-assemble into a rhythmically bursting neural network whose speed and intercellular coordination are both instructively modulated by cell-type specific interactions with inhibitory neurons.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Transition between fermentation and respiration determines history-dependent behavior in fluctuating carbon sources

    Bram Cerulus et al.
    Live-cell microscopy and genome-wide screens reveal how slow transitions in metabolism can underlie metabolic memory, providing a model for organisms demonstrating similar history-dependent behaviour and routes to improve industrial microbes.
    1. Neuroscience

    Biophysics of object segmentation in a collision-detecting neuron

    Richard Burkett Dewell, Fabrizio Gabbiani
    Active dendritic processing enables an individual neuron to discriminate the spatial pattern of synaptic inputs, increasing neural and behavioral selectivity for escaping an impending threat.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    An intracellular anion channel critical for pigmentation

    Nicholas W Bellono et al.
    Oculocutaneous albinism II (OCA2) contributes to a melanosome-specific anion channel that modulates organellar pH and is critical for melanin synthesis.