Results 21 to 30 of about 3,380 (178)
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
doaj +1 more source
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
doaj +1 more source
RNA interference in marine and freshwater sponges [PDF]
, 2011 Background: The marine sponge Tethya wilhelma and the freshwater sponge Ephydatia muelleri are emerging model organisms to study evolution, gene regulation, development, and physiology in non-bilaterian animal systems. Thus far, functional methods (i.e.,
Cieniewicz, Brandon +12 more
core +1 more source
The evolution of the dystroglycan complex, a major mediator of muscle integrity [PDF]
, 2015 Basement membrane (BM) extracellular matrices are crucial for the coordination of different tissue layers. A matrix adhesion receptor that is important for BM function and stability in many mammalian tissues is the dystroglycan (DG) complex.
Adams, Josephine C, Brancaccio, Andrea
core +3 more sources
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
doaj +1 more source
Expression and phylogenetic analysis of the zic gene family in the evolution and development of metazoans [PDF]
, 2010 Background zic genes are members of the gli/glis/nkl/zic super-family of C2H2 zinc finger (ZF) transcription factors. Homologs of the zic family have been implicated in patterning neural and mesodermal tissues in bilaterians ...
Michael J Layden +4 more
core +2 more sources
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.
openaire +3 more sources
Evolutionary origin of synapses and neurons – Bridging the gap [PDF]
, 2017 The evolutionary origin of synapses and neurons is an enigmatic subject that inspires much debate. Non-bilaterian metazoans, both with and without neurons and their closest relatives already contain many components of the molecular toolkits for ...
Alberstein +109 more
core +3 more sources
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
openaire +2 more sources
A fragmented metazoan organellar genome [PDF]
, 2008 Background: Animal mitochondrial (mt) genomes are characteristically circular molecules of ~16–20 kb. Medusozoa (Cnidaria excluding Anthozoa) are exceptional in that their mt genomes are linear and sometimes subdivided into two to presumably four ...
Erpenbeck, Dirk +2 more
core +1 more source