Results 21 to 30 of about 3,445 (210)
Transposon-derived transcription factors across metazoans
Frontiers in Cell and Developmental Biology, 2023 Transposable elements (TE) could serve as sources of new transcription factors (TFs) in plants and some other model species, but such evidence is lacking for most animal lineages. Here, we discovered multiple independent co-options of TEs to generate 788
Krishanu Mukherjee +2 more
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Early animal evolution: a morphologist's view [PDF]
Royal Society Open Science, 2019 Two hypotheses for the early radiation of the metazoans are vividly discussed in recent phylogenomic studies, the ‘Porifera-first’ hypothesis, which places the poriferans as the sister group of all other metazoans, and the ‘Ctenophora-first’ hypothesis ...
Claus Nielsen
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Journal of Water and Climate Change, 2023 Ctenophores are quick responders to coastal environmental changes and play a crucial role in marine food web dynamics. We report the environmental drivers of a ctenophore swarm (Pleurobrachia spp.) and associated ecological changes in estuarine and ...
Alfisa Siddique +4 more
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Alternative neural systems: What is a neuron? (Ctenophores, sponges and placozoans)
Frontiers in Cell and Developmental Biology, 2022 How to make a neuron, a synapse, and a neural circuit? Is there only one ‘design’ for a neural architecture with a universally shared genomic blueprint across species?
Leonid L. Moroz +2 more
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Very few sites can reshape the inferred phylogenetic tree [PDF]
PeerJ, 2020 The history of animal evolution, and the relative placement of extant animal phyla in this history is, in principle, testable from phylogenies derived from molecular sequence data. Though datasets have increased in size and quality in the past years, the
Warren R. Francis, Donald E. Canfield
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Functional Analysis of Ligand-Gated Chloride Channels in a Cnidarian Sheds Light on the Evolution of Inhibitory Signaling. [PDF]
Adv Sci (Weinh)We uncover a large variety of putative inhibitory ligand‐gated ion channels (LGICs) in the phylum Cnidaria, the sister group to all bilaterian animals. Phylogenetic analysis suggests a complex evolutionary history of inhibitory LGICs with diverse neurotransmitter ligands.
Ojha A +13 more
europepmc +2 more sources
ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera. [PDF]
J Exp Zool B Mol Dev EvolIn rotifers, ParaHox genes show a dispersed genomic organization, with Xlox absent across gnathiferans. Exclusive neuronal expression of Gsx and Cdx reveals that ancestral ParaHox genes coordinated neural and epithelial development beyond gut patterning, suggesting an integrated role in early bilaterian body plan organization.
Fröbius AC, Mark Welch DB, Herlyn H.
europepmc +2 more sources
The genetic factors of bilaterian evolution
eLife, 2020 The Cambrian explosion was a unique animal radiation ~540 million years ago that produced the full range of body plans across bilaterians. The genetic mechanisms underlying these events are unknown, leaving a fundamental question in evolutionary biology ...
Peter Heger +4 more
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A Screen for Gene Paralogies Delineating Evolutionary Branching Order of Early Metazoa
G3: Genes, Genomes, Genetics, 2020 The evolutionary diversification of animals is one of Earth’s greatest marvels, yet its earliest steps are shrouded in mystery. Animals, the monophyletic clade known as Metazoa, evolved wildly divergent multicellular life strategies featuring ciliated ...
Albert Erives, Bernd Fritzsch
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Initial discovery of microplastic pollution in Mnemiopsis leidyi (Ctenophora: Lobata)
Water Biology and Security, 2023 The production of plastics has exponentially increased over time such that the observation of microplastics in the oceans has become a major concern given how frequently these particles and marine biota may interact.
Mariana Beatriz Paz Otegui +3 more
doaj +1 more source