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| Silva,Fernanda Britto da; Muschner,Valéria C.; Bonatto,Sandro L.. |
| 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. However, despite its importance, the phylogenetic position of the Placozoa remains uncertain, as does the relationships between the basal metazoans. We sequenced the nearly complete large subunit (LSU) of the T. adhaerens rRNA gene together with the small subunit (SSU) rRNA and used several methods to infer the phylogenetic position of Placozoa and the relationships between the basal animal phyla. The phylogenetic trees obtained from the LSU, SSU and SSU + LSU datasets support monophyly of all basal metazoan phyla, except the Porifera. However, the relationships between all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trichoplax adhaerens; Placozoa; Animal basal phylogeny; Metazoa relationship; RRNA genes. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000100022 |
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| Schenkelaars, Quentin; Fierro-constain, Laura; Renard, Emmanuelle; Borchiellini, Carole. |
| Background: The Planar Cell Polarity pathway (PCP) has been described as the main feature involved in patterning cell orientation in bilaterian tissues. Recently, a similar phenomenon was revealed in cnidarians, in which the inhibition of this pathway results in the absence of cilia orientation in larvae, consequently proving the functional conservation of PCP signaling between Cnidaria and Bilateria. Nevertheless, despite the growing accumulation of databases concerning basal lineages of metazoans, very few information concerning the existence of PCP components have been gathered outside of Bilateria and Cnidaria. Thus, the origin of this module or its prevalence in early emerging metazoans has yet to be elucidated. Results: The present study addresses... |
| Tipo: Text |
Palavras-chave: Planar cell polarity; Van Gogh; Multigene families; Porifera; Placozoa; Ctenophora; Wnt signaling; Metazoan phylogeny. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00371/48250/48685.pdf |
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