Results 41 to 50 of about 1,730 (164)

Deep RNA sequencing reveals the smallest known mitochondrial micro exon in animals: The placozoan cox1 single base pair exon. [PDF]

PLoS ONE, 2017
The phylum Placozoa holds a key position for our understanding of the evolution of mitochondrial genomes in Metazoa. Placozoans possess large mitochondrial genomes which harbor several remarkable characteristics such as a fragmented cox1 gene and trans ...
Hans-Jürgen Osigus, Michael Eitel, Bernd Schierwater   +2 more
doaj   +1 more source

Early evolution of the LIM homeobox gene family

BMC Biology, 2010
Background LIM homeobox (Lhx) transcription factors are unique to the animal lineage and have patterning roles during embryonic development in flies, nematodes and vertebrates, with a conserved role in specifying neuronal identity.
Degnan Bernard M, Chapman Jarrod, Mohanty Kareshma, Lu Daniel R, Larroux Claire, Srivastava Mansi, Rokhsar Daniel S   +6 more
doaj   +1 more source

Binary fission in Trichoplax is orthogonal to the subsequent division plane

Mechanisms of Development, 2020
Asexual reproduction in Trichoplax occurs mainly by binary fission and occasionally by the budding of epithelial spheres called "swarmers". The process that leads to binary fission and the mechanisms involved in this segregation are practically unknown.
Jorge, Zuccolotto-Arellano, Rodrigo, Cuervo-González   +1 more
openaire   +2 more sources

Expansion microscopy in Placozoa: improving resolution and preservation of fragile samples during marine expedition

Frontiers in Marine Science
Placozoa are small disc-shaped animals representing one of the early branching metazoan lineages with only a dozen cell types, fast effector reactions, and complex behaviors.
Daria Y. Romanova, Yana A. Frank, Leonid L. Moroz, Leonid L. Moroz   +3 more
doaj   +1 more source

MicroRNAs and essential components of the microRNA processing machinery are not encoded in the genome of the ctenophore Mnemiopsis leidyi

BMC Genomics, 2012
Background MicroRNAs play a vital role in the regulation of gene expression and have been identified in every animal with a sequenced genome examined thus far, except for the placozoan Trichoplax. The genomic repertoires of metazoan microRNAs have become
Maxwell Evan K, Ryan Joseph F, Schnitzler Christine E, Browne William E, Baxevanis Andreas D   +4 more
doaj   +1 more source

The ventral epithelium of Trichoplax adhaerens deploys in distinct patterns cells that secrete digestive enzymes, mucus or diverse neuropeptides

Biology Open, 2019
The disk-shaped millimeter-sized marine animal, Trichoplax adhaerens, is notable because of its small number of cell types and primitive mode of feeding.
Tatiana D. Mayorova, Katherine Hammar, Christine A. Winters, Thomas S. Reese, Carolyn L. Smith   +4 more
doaj   +1 more source

Insights into the evolution of digestive systems from studies of Trichoplax adhaerens [PDF]

Cell and Tissue Research, 2019
Trichoplax, a member of the phylum Placozoa, is a tiny ciliated marine animal that glides on surfaces feeding on algae and cyanobacteria. It stands out from other animals in that it lacks an internal digestive system and, instead, digests food trapped under its lower surface.
Carolyn L. Smith, Tatiana D. Mayorova
openaire   +2 more sources

Support for a clade of Placozoa and Cnidaria in genes with minimal compositional bias

eLife, 2018
The phylogenetic placement of the morphologically simple placozoans is crucial to understanding the evolution of complex animal traits. Here, we examine the influence of adding new genomes from placozoans to a large dataset designed to study the deepest ...
Christopher E Laumer, Harald Gruber-Vodicka, Michael G Hadfield, Vicki B Pearse, Ana Riesgo, John C Marioni, Gonzalo Giribet   +6 more
doaj   +1 more source

ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 4, Page 357-369, June 2026.
In 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.
Andreas C. Fröbius, David B. Mark Welch, Holger Herlyn   +2 more
wiley   +1 more source

Comparative genomics and the nature of placozoan species. [PDF]

PLoS Biology, 2018
Placozoans are a phylum of nonbilaterian marine animals currently represented by a single described species, Trichoplax adhaerens, Schulze 1883. Placozoans arguably show the simplest animal morphology, which is identical among isolates collected ...
Michael Eitel, Warren R Francis, Frédérique Varoqueaux, Jean Daraspe, Hans-Jürgen Osigus, Stefan Krebs, Sergio Vargas, Helmut Blum, Gray A Williams, Bernd Schierwater, Gert Wörheide   +10 more
doaj   +1 more source