Browsing Sars International Centre for Marine Molecular Biology by Document Types "Journal article"
Now showing items 21-40 of 133
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Conservative route to genome compaction in a miniature annelid
(Journal article; Peer reviewed, 2021)The causes and consequences of genome reduction in animals are unclear because our understanding of this process mostly relies on lineages with often exceptionally high rates of evolution. Here, we decode the compact ... -
Coordinated spatial and temporal expression of Hox genes during embryogenesis in the acoel Convolutriloba longifissura
(Journal article; Peer reviewed, 2009-10-01)Background: Hox genes are critical for patterning the bilaterian anterior-posterior axis. The evolution of their clustered genomic arrangement and ancestral function has been debated since their discovery. As acoels appear ... -
Cytoskeleton-mediated templating of complex cellulose-scaffolded extracellular structure and its association with oikosins in the urochordate Oikopleura
(Peer reviewed; Journal article, 2010)Oriented cellulose deposition is critical to plant patterning and models suggest microtubules constrain cellulose synthase movements through the plasma membrane. Though widespread in plants, urochordates are the only animals ... -
A deep learning method for replicate-based analysis of chromosome conformation contacts using Siamese neural networks
(Journal article; Peer reviewed, 2023)The organisation of the genome in nuclear space is an important frontier of biology. Chromosome conformation capture methods such as Hi-C and Micro-C produce genome-wide chromatin contact maps that provide rich data ... -
Detailed reconstruction of the musculature in Limnognathia maerski (Micrognathozoa) and comparison with other Gnathifera
(Journal article; Peer reviewed, 2014-10-01)Introduction: Limnognathia maerski is the single species of the recently described taxon, Micrognathozoa. The most conspicuous character of this animal is the complex set of jaws, which resembles an even more intricate ... -
Development and juvenile anatomy of the nemertodermatid Meara stichopi (Bock) Westblad 1949 (Acoelomorpha)
(Journal article; Peer reviewed, 2014-07-07)Introduction: Nemertodermatida is the sister group of the Acoela, which together form the Acoelomorpha, a taxon that comprises bilaterally symmetric, small aquatic worms. While there are several descriptions of the embryology ... -
The development of early pioneer neurons in the annelid Malacoceros fuliginosus
(Journal article; Peer reviewed, 2020)Background Nervous system development is an interplay of many processes: the formation of individual neurons, which depends on whole-body and local patterning processes, and the coordinated growth of neurites and synapse ... -
Development of the aboral domain in Nematostella requires β-catenin and the opposing activities of Six3/6 and Frizzled5/8
(Journal article; Peer reviewed, 2016-03)The development of the oral pole in cnidarians and the posterior pole in bilaterians is regulated by canonical Wnt signaling, whereas a set of transcription factors, including Six3/6 and FoxQ2, controls aboral development ... -
Development of the larval anterior neurogenic domains of Terebratalia transversa (Brachiopoda) provides insights into the diversification of larval apical organs and the spiralian nervous system
(Peer reviewed; Journal article, 2012-01-24)Background: Larval features such as the apical organ, apical ciliary tuft, and ciliated bands often complicate the evaluation of hypotheses regarding the origin of the adult bilaterian nervous system. Understanding how ... -
Developmental diversity in free-living flatworms
(Journal article; Peer reviewed, 2012-03-19)Abstract Flatworm embryology has attracted attention since the early beginnings of comparative evolutionary biology. Considered for a long time the most basal bilaterians, the Platyhelminthes (excluding Acoelomorpha) are ... -
Developmental expression of “germline”- and “sex determination”-related genes in the ctenophore Mnemiopsis leidyi
(Journal article; Peer reviewed, 2016-08-02)Background: An essential developmental pathway in sexually reproducing animals is the specification of germ cells and the differentiation of mature gametes, sperm and oocytes. The “germline” genes vasa, nanos ... -
A developmental role for the chromatin-regulating CoREST complex in the cnidarian Nematostella vectensis
(Journal article; Peer reviewed, 2022)Background Chromatin-modifying proteins are key players in the regulation of development and cell differentiation in animals. Most chromatin modifiers, however, predate the evolution of animal multicellularity, and how ... -
Diversity and host associations of Myrsidea chewing lice (Phthiraptera: Menoponidae) in the tropical rainforest of Malaysian Borneo
(Journal article; Peer reviewed, 2020)The tropical rainforests of Sundaland are a global biodiversity hotspot increasingly threatened by human activities. While parasitic insects are an important component of the ecosystem, their diversity and parasite-host ... -
Early evolution of radial glial cells in Bilateria
(Journal article; Peer reviewed, 2017)Bilaterians usually possess a central nervous system, composed of neurons and supportive cells called glial cells. Whereas neuronal cells are highly comparable in all these animals, glial cells apparently differ, and in ... -
Embracing the comparative approach: How robust phylogenies and broader developmental sampling impacts the understanding of nervous system evolution
(Journal article; Peer reviewed, 2015-11-09)Molecular biology has provided a rich dataset to develop hypotheses of nervous system evolution. The startling patterning similarities between distantly related animals during the development of their central nervous system ... -
Embryonic chirality and the evolution of spiralian left - right asymmetries
(Journal article; Peer reviewed, 2016-12)The group Spiralia includes species with one of the most significant cases of left–right asymmetries in animals: the coiling of the shell of gastropod molluscs (snails). In this animal group, an early event of embryonic ... -
Embryonic expression of endogenous retroviral RNAs in somatic tissues adjacent to the Oikopleura germline
(Journal article; Peer reviewed, 2015)Selective pressure to maintain small genome size implies control of transposable elements, and most old classes of retrotransposons are indeed absent from the very compact genome of the tunicate Oikopleura dioica. Nonetheless, ... -
Embryonic expression of priapulid Wnt genes
(Journal article; Peer reviewed, 2019-07)Posterior elongation of the developing embryo is a common feature of animal development. One group of genes that is involved in posterior elongation is represented by the Wnt genes, secreted glycoprotein ligands that signal ... -
Evolution and development of the adelphophagic, intracapsular Schmidt's larva of the nemertean Lineus ruber
(Journal article; Peer reviewed, 2015-09-28)Background: The life cycle of many animals includes a larval stage, which has diversified into an astonishing variety of ecological strategies. The Nemertea is a group of spiralians that exhibits a broad diversity of larval ... -
Evolution of CDK1 Paralog Specializations in a Lineage With Fast Developing Planktonic Embryos
(Journal article; Peer reviewed, 2022-01-28)The active site of the essential CDK1 kinase is generated by core structural elements, among which the PSTAIRE motif in the critical αC-helix, is universally conserved in the single CDK1 ortholog of all metazoans. We report ...