103 results found
    1. Developmental Biology
    2. Evolutionary Biology

    Wnt/β-catenin signaling is an evolutionarily conserved determinant of chordate dorsal organizer

    Iryna Kozmikova, Zbynek Kozmik
    Wnt/beta-catenin signaling is essential for the specification of dorsal cell fate in amphioxus, suggesting a common evolutionary origin for the formation of the dorsal organizer in chordates.
    1. Evolutionary Biology

    Existence and functions of a kisspeptin neuropeptide signaling system in a non-chordate deuterostome species

    Tianming Wang et al.
    Identification and functional characterization of the first non-chordate kisspeptin neuropeptide system in the sea cucumber indicates the ancient origin of the intracellular signaling and physiological functions of this molecular system.
    1. Developmental Biology
    2. Genetics and Genomics

    Combinatorial chromatin dynamics foster accurate cardiopharyngeal fate choices

    Claudia Racioppi et al.
    ATAC-seq, CRISPR/Cas9 mutagenesis, reporter and gene expression assays revealed dynamic chromatin accessibility profiles governing differential gene expression during heart vs. pharyngeal muscle fate choices in the powerful chordate model Ciona.
    1. Neuroscience

    The CNS connectome of a tadpole larva of Ciona intestinalis (L.) highlights sidedness in the brain of a chordate sibling

    Kerrianne Ryan et al.
    Serial-section EM analysis uncovers the CNS connectome of a Ciona larva, the second of any entire nervous system, and exposes left-right asymmetries in its synaptic circuits.
    1. Neuroscience

    Parallel visual circuitry in a basal chordate

    Matthew J Kourakis et al.
    The ascidian Ciona integrates visual information from two photoreceptor types through convergent excitatory and disinhibitory circuits, thereby evoking swim behaviors.
    1. Developmental Biology
    2. Genetics and Genomics

    The genome sequence of the colonial chordate, Botryllus schlosseri

    Ayelet Voskoboynik et al.
    The Botryllus schlosseri genome yields insights into the evolution of hematopoiesis.
    1. Developmental Biology
    Ciona intestinalis illustration

    The Natural History of Model Organisms: An organismal perspective on C. intestinalis development, origins and diversification

    Matthew J Kourakis, William C Smith
    The life cycle and morphology of the sea squirt Ciona intestinalis shed light on vertebrate evolution.
    1. Ecology
    2. Evolutionary Biology

    The Natural History of Model Organisms: New opportunities at the wild frontier

    Jane Alfred, Ian T Baldwin
    A better understanding of the natural history of model organisms will increase their value as model systems and also keep them at the forefront of research.
    1. Ecology
    2. Biochemistry and Chemical Biology

    Biochemistry: Shedding light on sunscreen biosynthesis in zebrafish

    Carolyn A Brotherton, Emily P Balskus
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    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.

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