Bernd Schierwater, Rob DeSalle,
What are Placozoa? To us, Placozoa are the most unique animals one can think of (Figure 1). The bauplan of these always hungry creatures is by far ... secondarily reduced parasites show a similarly simple morphology. Placozoa are organized in a sandwich-like body plan ... a loose layer of so-called 'fiber cells'. Placozoa lack any kind of apparent symmetry or body ... together (even in heavy wave-break zones). Yet, placozoa can feed, digest, smell, see, move, grow and ... Otto Bütschli’s 'placula hypothesis' named the phylum 'Placozoa'. Bütschli’s hypothesis was erected to propose a ...
Tópico(s): Venomous Animal Envenomation and Studies
2018 - Elsevier BV | Current Biology
Julia Gauberg, Salsabil Abdallah, Wassim Elkhatib, Alicia N. Harracksingh, Thomas Piekut, Elise F. Stanley, Adriano Senatore,
... calcium channels in early diverging animal phyla: cnidaria, placozoa, porifera and ctenophora.Front. Physiol. 2016; 7 (27867359): ... calcium channels in early diverging animal phyla: cnidaria, placozoa, porifera and ctenophora.Front. Physiol. 2016; 7 (27867359): ... calcium channels in early diverging animal phyla: cnidaria, placozoa, porifera and ctenophora.Front. Physiol. 2016; 7 (27867359): ... calcium channels in early diverging animal phyla: cnidaria, placozoa, porifera and ctenophora.Front. Physiol. 2016; 7 (27867359): ...
Tópico(s): Neuroscience and Neuropharmacology Research
2020 - Elsevier BV | Journal of Biological Chemistry
Эволюционная ветвь Пластинчатых (Placozoa) имеет большое значение для понимания происхождения и эволюции Metazoa. Представители типа Placozoa обладают простым строением тела, однако полное отсутствие органов, ... числе динамическими изменениями формы тела. Известно 19 гаплотипов Placozoa, включающих два вида — Trichoplax adhaerens (H1) и Hoilungia ... пока ещё малоисследованные штаммы, обозначаемые как H2–H19 Placozoa sp. Хотя все Placozoa имеют похожий фенотип (пластинчатую дископодобную форму тела), анализ ...
Tópico(s): Planarian Biology and Electrostimulation
2019 - | Marine Biological Journal
Frank Hauser, Thomas Lund Koch, Cornelis J.P. Grimmelikhuijzen,
... Cnidaria (animals like corals and sea anemones), and Placozoa (small disk-like animals, feeding on algae). The ... receptors are not closely related to those from Placozoa. We propose that the divergence times between Cnidaria, Placozoa, and Bilateria might be too long for recognizing ... in early emerging phyla, such as Cnidaria and Placozoa. Humans have eight LGRs. In our current review, ... back to the common ancestor of Cnidaria and Placozoa.
Tópico(s): Marine Invertebrate Physiology and Ecology
2022 - Frontiers Media | Frontiers in Endocrinology
Bernd Schierwater, Daniëlle de Jong, Rob DeSalle,
... show-in sharp contrast to protists–intrasomatic differentiation. Placozoa have the lowest degree of intrasomatic variation; the ... The Trox-2 Hox/ParaHox gene of Trichoplax (Placozoa) marks an epithelial boundary. Dev Genes Evol 2004; ... 170–5). For this and several other reasons Placozoa have been regarded by many as the most ... hypotheses—the placula hypothesis. A basal position of Placozoa would provide answers to several key issues of ... Metazoa are controversial and a basal position of Placozoa is not generally accepted (e.g. Schierwater B, ...
Tópico(s): Marine Ecology and Invasive Species
2008 - Elsevier BV | The International Journal of Biochemistry & Cell Biology
Produção Nacional
Revisado por pares
Fernanda Britto da Silva, Valéria Cunha Muschner, Sandro L. Bonatto,
The phylum Placozoa, represented by its single species Trichoplax adhaerens, has always been considered one of the most basal animal clades ... despite its importance, the phylogenetic position of the Placozoa remains uncertain, as does the relationships between the ... several methods to infer the phylogenetic position of Placozoa and the relationships between the basal animal phyla. ... LSU and SSU phylogenetic signals. The hypotheses that Placozoa is a derived Cnidaria or the most basal ... by our data. Moreover, our analyses suggests that Placozoa is most likely the sister group of Cnidaria ...
Tópico(s): Planarian Biology and Electrostimulation
2007 - Brazilian Society of Genetics | Genetics and Molecular Biology
... at which taxa actually have neurons. Porifera and Placozoa do not have clearly defined neuronal cell types ... in Cnidaria and Bilateria, or that Porifera and Placozoa have lost neuronal cell types, possibilities that are ... system. The same can be said for the Placozoa, but as this phylum contains only a single ... confirm this phylogenetic position. The status of the Placozoa in nervous system phylogeny is further complicated by ... with respect to the question of whether the Placozoa have indeed lost their nervous system. Earlier work ( ...
Tópico(s): Planarian Biology and Electrostimulation
2015 - The Company of Biologists | Journal of Experimental Biology
Michael Tessler, Johannes S. Neumann, Kai Kamm, Hans‐Jürgen Osigus, Gil Eshel, Apurva Narechania, John A. Burns, Rob DeSalle, Bernd Schierwater,
Placozoa is an ancient phylum of extraordinarily unusual animals: miniscule, ameboid creatures that lack most fundamental animal ... to the first complete Linnaean taxonomic classification of Placozoa, over a century after its discovery: This may ... reconstructions indicate large shifts in gene content within Placozoa, with Hoilungia hongkongensis and its closest relatives having ...
Tópico(s): Planarian Biology and Electrostimulation
2022 - Frontiers Media | Frontiers in Ecology and Evolution
Timothy Q. DuBuc, Joseph F. Ryan, Mark Q. Martindale,
Placozoa are a morphologically simplistic group of marine animals found globally in tropical and subtropical environments. They ... TgfΒ signaling and the axial patterning system of Placozoa. Our results suggest that placozoans have an oral– ... and that the parahoxozoan ancestor (common ancestor of Placozoa and Cnidaria) was likely radially symmetric.
Tópico(s): Hippo pathway signaling and YAP/TAZ
2019 - Oxford University Press | Molecular Biology and Evolution
Kai Kamm, Bernd Schierwater, Rob DeSalle,
... at least primordial Toll-like receptor signaling in Placozoa. An abundance of scavenger receptors, fibrinogen-related domain ... of the immunity related gene repertoire specific to Placozoa.The found wealth of immunity related genes present in Placozoa is surprising and quite striking in light of ... type makeup. Research is warranted to reveal how Placozoa utilize this immune repertoire to manage and maintain ...
Tópico(s): Invertebrate Immune Response Mechanisms
2019 - BioMed Central | BMC Genomics
Casey W. Dunn, Sally P. Leys, Steven H. D. Haddock,
... of five clades: Porifera (sponges), Ctenophora (comb jellies), Placozoa, Cnidaria, and Bilateria. The monophyly (see Glossary) of ... belong to one of five clades: Porifera, Ctenophora, Placozoa, Cnidaria, and Bilateria. To a first approximation, the ... belong to one of five clades: Porifera, Ctenophora, Placozoa, Cnidaria, and Bilateria. To a first approximation, the ... Google Scholar], these also support a clade comprising Placozoa, Cnidaria, and Bilateria that has been named Parahoxozoa [ ...
Tópico(s): Coral and Marine Ecosystems Studies
2015 - Elsevier BV | Trends in Ecology & Evolution
Michael Eitel, Hans‐Jürgen Osigus, Rob DeSalle, Bernd Schierwater,
The enigmatic animal phylum Placozoa holds a key position in the metazoan Tree of Life. A simple bauplan makes it appear to be the most ... species in the phylum to date, making the Placozoa the only monotypic phylum in the animal kingdom. ... the morphology, phylogenetic position and ecology of the Placozoa. Secondly, we give an overview of placozoan morphological ...
Tópico(s): Planarian Biology and Electrostimulation
2013 - Public Library of Science | PLoS ONE
Daniëlle de Jong, Michael Eitel, Wolfgang Jakob, Hans‐Jürgen Osigus, Heike Hadrys, Robert DeSalle, Bernd Schierwater,
... two distantly related haplotypes (species lineages) of the Placozoa (Trichoplax adhaerens 16S haplotype 1 [H1] and Placozoa sp. [H2]). We also identified Dicer genes in ... genes each are found in the Porifera and Placozoa. Phylogenetic analyses comparing these and other metazoan Dicers ... a "Proto-Dicer" gene. We show that the Placozoa is the only known metazoan phylum which contains ...
Tópico(s): Invertebrate Immune Response Mechanisms
2009 - Oxford University Press | Molecular Biology and Evolution
Hans‐Jürgen Osigus, Michael Eitel, Bernd Schierwater,
The phylum Placozoa holds a key position for our understanding of the evolution of mitochondrial genomes in Metazoa. Placozoans possess large ... the only formally described species in the phylum Placozoa. We have analyzed RNA-seq data of the undescribed sister species, Placozoa sp. H2 ("Panama" clone), with special focus on ...
Tópico(s): Protist diversity and phylogeny
2017 - Public Library of Science | PLoS ONE
Markus Lambertz, Steven F. Perry,
... of recognized extant lineages of the entire clade Placozoa, which usually is attributed the rank of a 'Phylum' [10]. On the other hand, the Placozoa indeed are one of the most [11], if ... Schierwater B. 2006Mitochondrial genome of Trichoplax adhaerens supports Placozoa as the basal lower metazoan phylum. Proc. Natl ...
Tópico(s): Plant Diversity and Evolution
2015 - Royal Society | Proceedings of the Royal Society B Biological Sciences
Michael Eitel, Loretta Guidi, Heike Hadrys, Maria Balsamo, Bernd Schierwater,
... of the Metazoa is the early branching phylum Placozoa, which has attracted rapidly increasing attention. Despite over ... life cycle of this enigmatic phylum remains unknown. Placozoa are a unique model system for which the ... on sexual reproduction and embryonic development in the Placozoa and support the hypothesis of current sexual reproduction. ...
Tópico(s): Cephalopods and Marine Biology
2011 - Public Library of Science | PLoS ONE
Michael Eitel, Bernd Schierwater,
... 11 p. 2315-2327 The phylogeography of the Placozoa suggests a taxon-rich phylum in tropical and ... friends and colleagues. Learn more.Copy URL Abstract Placozoa has been a key phylum for understanding early ...
Tópico(s): Parasite Biology and Host Interactions
2010 - Wiley | Molecular Ecology
Bert Breugelmans, Gert Simonet, Vincent van Hoef, Sofie Van Soest, Jozef Vanden Broeck,
... sister phylum Onychophora and the 'primitive', non-bilaterian Placozoa. In Arthropoda, pacifastin members were found to be ... on the observation of a pacifastin gene in Placozoa, it can be hypothesized that the ancestral pacifastin ... the existence of a 'pacifastin gene gap' between Placozoa and Onychophora/Arthropoda, it cannot be excluded that ...
Tópico(s): Invertebrate Immune Response Mechanisms
2009 - Springer Science+Business Media | BMC Evolutionary Biology
Ana Y. Signorovitch, Leo W. Buss, Stephen L. Dellaporta,
... a shared feature among members of the phylum Placozoa or a uniquely derived condition. All three mitochondrial ... endonuclease domain. The differences in mtDNA size within Placozoa are due to variation in intergenic spacer regions ... 12 respiratory chain genes support the monophyly of Placozoa. The similarities in composition and structure between the ...
Tópico(s): Protist diversity and phylogeny
2007 - Public Library of Science | PLoS Genetics
Andrea Ender, Bernd Schierwater,
The phylum Placozoa is represented by a single known species, Trichoplax adhaerens, a tiny marine organism that represents the most simple ... hypothesis assumes that the primitive organization of the Placozoa is the result of secondary reduction. Here we ...
Tópico(s): Protist diversity and phylogeny
2003 - Oxford University Press | Molecular Biology and Evolution
Eldon E. Ball, David J. Miller,
The Phylum Placozoa, once considered monotypic, turns out to be surprisingly diverse despite the morphological simplicity and apparent uniformity of these ... map haplotypes with different kinds of distribution patterns. Placozoa are minimalist metazoans with a correspondingly minimalist (98 ... 2009; Sperling et al. 2009), although the alternative 'Placozoa basal' scenario cannot yet be excluded and has ... represent important steps in documenting variation within the Placozoa and are of great interest, there are some ...
Tópico(s): Planarian Biology and Electrostimulation
2010 - Wiley | Molecular Ecology
Bernd Schierwater, Hans‐Jürgen Osigus, Tjard Bergmann, Neil W. Blackstone, Heike Hadrys, Jens Hauslage, Patrick O. Humbert, Kai Kamm, Marc Kvansakul, Kathrin Wysocki, Rob DeSalle,
... surrogate for a metazoan ancestor genome. The phylum Placozoa presently harbors three formally described species, while several ...
Tópico(s): Parasite Biology and Host Interactions
2021 - Wiley | BioEssays
... are the phylogenetic relationships between Vendozoa, sponges and Placozoa; and the inferred phenotypes prior to each branch ... them 'choanocyte-like'. Thus, properties suggested for 'pre-placozoa' are partially contradictory and/or too loosely specified. ... as having a similar grade of organization to Placozoa (albeit one of their cell types being choanocytes).3. Are any Vendozoa 'pre-placozoa'?One cannot see cells or cell types in ... secreted by mesenchyme cells sandwiched between two epithelia. Placozoa are also, in this sense, triploblasts, and the ...
Tópico(s): Marine Biology and Ecology Research
2017 - Royal Society | Philosophical Transactions of the Royal Society B Biological Sciences
Wassim Elkhatib, Luis Alfonso Yañez Guerra, Tatiana D. Mayorova, Mark A. Currie, Anhadvir Singh, María Perera, Julia Gauberg, Adriano Senatore,
... evolved independently in T. adhaerens and its phylum Placozoa. Our phylogenetic analysis also identifies several clades of ...
Tópico(s): Planarian Biology and Electrostimulation
2023 - Nature Portfolio | Communications Biology
Tatiana D. Mayorova, Katherine Hammar, Jae Hoon Jung, Maria A. Aronova, Guofeng Zhang, Christine A. Winters, Thomas S. Reese, Carolyn L. Smith,
Placozoa is a phylum of non-bilaterian marine animals. These small, flat organisms adhere to the substrate ... our study is the first to show that Placozoa possesses this cell type. The phylogenetic distribution of ...
Tópico(s): Marine Ecology and Invasive Species
2021 - Nature Portfolio | Scientific Reports
Leonid L. Moroz, Daria Y. Romanova, М. А. Никитин, Dosung Sohn, Andrea B. Kohn, Émilie Neveu, Frédérique Varoqueaux, Dirk Fasshauer,
... the complexity of NO-cGMP-mediated signaling in Placozoa is greater to those in vertebrates. This situation ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
2020 - Nature Portfolio | Scientific Reports
Daria Y. Romanova, Ivan V. Smirnov, М. А. Никитин, Andrea B. Kohn, Alisa I. Borman, A. Yu. Malyshev, П. М. Балабан, Leonid L. Moroz,
Placozoa are small disc-shaped animals, representing the simplest known, possibly ancestral, organization of free-living animals. ...
Tópico(s): Planarian Biology and Electrostimulation
2020 - Elsevier BV | Biochemical and Biophysical Research Communications
María Eugenia Alzugaray, María Cecilia Bruno, María José Villalobos Sambucaro, Jorge Rafael Ronderos,
... 2), and seems to be present in Cnidaria, Placozoa and in Bilateria, suggesting that it was present ...
Tópico(s): Biochemical Analysis and Sensing Techniques
2019 - Nature Portfolio | Scientific Reports
Carolyn L. Smith, Tatiana D. Mayorova,
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 ... in digestion and feeding behavior. Phylogenomic analyses place Placozoa as sister to Eumetazoa, the clade that includes ...
Tópico(s): Marine Ecology and Invasive Species
2019 - Springer Science+Business Media | Cell and Tissue Research
Maria Cristina Albertini, Daniele Fraternale, Federica Semprucci, S Cecchini, Mariastella Colomba, Marco Rocchi, Davide Sisti, Barbara Di Giacomo, Michele Mari, Luigia Sabatini, Lucia Cesaroni, Maria Balsamo, Loretta Guidi,
... fruit ethanol extract on Trichoplax adhaerens Schulze, 1883 (Placozoa) laboratory cultures which—for the first time—were ...
Tópico(s): Aquatic Ecosystems and Phytoplankton Dynamics
2019 - PeerJ, Inc. | PeerJ