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 +2 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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Phylogenetic position of Placozoa based on large subunit (LSU) and small subunit (SSU) rRNA genes
Genetics and Molecular Biology, 2007 The phylum Placozoa, represented by its single species Trichoplax adhaerens, has always been considered one of the most basal animal clades due to its low morphological complexity.
Fernanda Britto da Silva +2 more
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Molecular signatures for sex in the Placozoa [PDF]
Proceedings of the National Academy of Sciences, 2005 Placozoans, the simplest free-living animals, have never been observed to reproduce sexually. Here, we describe molecular evidence for sexual reproduction within one clade of the Placozoa. In a population sample of 10 individuals, within-individual and overall nucleotide diversity were similar to each other and consistent with levels observed in ...
Ana Y, Signorovitch +2 more
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Concatenated analysis sheds light on early metazoan evolution and fuels a modern "urmetazoon" hypothesis. [PDF]
PLoS Biology, 2009 For more than a century, the origin of metazoan animals has been debated. One aspect of this debate has been centered on what the hypothetical "urmetazoon" bauplan might have been.
Bernd Schierwater +7 more
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Placozoan fiber cells: mediators of innate immunity and participants in wound healing
Scientific Reports, 2021 Placozoa is a phylum of non-bilaterian marine animals. These small, flat organisms adhere to the substrate via their densely ciliated ventral epithelium, which mediates mucociliary locomotion and nutrient uptake.
Tatiana D. Mayorova +7 more
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Animal Evolution: The Enigmatic Phylum Placozoa Revisited [PDF]
Current Biology, 2005 A recent report of high levels of genetic variation between strains of Trichoplax adhaerens challenges the traditional view that the phylum Placozoa comprises only one species. At the morphological level, placozoans are amongst the simplest extant animals, but molecular evidence suggests that they may have more complex origins.
Miller, David James, Ball, Eldon E.
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The early ANTP gene repertoire: insights from the placozoan genome. [PDF]
PLoS ONE, 2008 The evolution of ANTP genes in the Metazoa has been the subject of conflicting hypotheses derived from full or partial gene sequences and genomic organization in higher animals.
Bernd Schierwater +5 more
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Comparative genomics of large mitochondria in placozoans.
PLoS Genetics, 2007 The first sequenced mitochondrial genome of a placozoan, Trichoplax adhaerens, challenged the conventional wisdom that a compact mitochondrial genome is a common feature among all animals.
Ana Y Signorovitch +2 more
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Placozoa – no longer a phylum of one [PDF]
Current Biology, 2004 AbstractMore than a century ago, the simplest of all metazoans was discovered and described as Trichoplax adhaerens[1]. These tiny, flattened animals lack symmetry, mouth, gut, nervous system, and extra-cellular matrix and constitute the apparently monotypic phylum Placozoa.
Voigt, Oliver +6 more
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