Chaetognath phylogenomics: a protostome with deuterostome-like development

@article{Marltaz2006ChaetognathPA,
  title={Chaetognath phylogenomics: a protostome with deuterostome-like development},
  author={Ferdinand Marl{\'e}taz and Elise Martin and Yvan Perez and Daniel Papillon and Xavier Caubit and Christopher J. Lowe and Bob Freeman and Laurent Fasano and Carole Dossat and Patrick Wincker and Jean Weissenbach and Yannick Le Parco},
  journal={Current Biology},
  year={2006},
  volume={16},
  pages={R577-R578}
}

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References

SHOWING 1-10 OF 31 REFERENCES

Evidence from 18S ribosomal DNA that the lophophorates are protostome animals

Sequence analyses show that lophophorates are protostomes closely related to mollusks and annelids, which deviates from the commonly held view of deuterostome affinity.

Identification of chaetognaths as protostomes is supported by the analysis of their mitochondrial genome.

The complete mitochondrial DNA genome of Spadella cephaloptera is determined, it is the smallest metazoan mitochondrial genome known and lacks both atp8 and atp6 and all tRNA genes, and phylogenetic reconstructions show that Chaetognatha belongs to protostomes.

The phylogenetic affinities of the chaetognaths: a molecular analysis.

This work proposes that the lineage leading to the chaetognaths arose prior to the advent of the coelomate metazoa, and isolation and nucleotide sequence determination of 18S ribosomal DNA from one species of Chaetognath and one acanthocephalan are described.

Multigene analyses of bilaterian animals corroborate the monophyly of Ecdysozoa, Lophotrochozoa, and Protostomia.

This study demonstrates that the incongruences observed between rRNA and multigene analyses were indeed due to long-branch attraction artifacts, illustrating the enormous impact of systematic biases on phylogenomic studies and suggests that urochordates are more closely related to vertebrates than are cephalochordates.

Phylogenomics and the reconstruction of the tree of life

This work has demonstrated the power of the phylogenomics approach, which has the potential to provide answers to several fundamental evolutionary questions, but challenges for the future have also been revealed.

Coelomata and not Ecdysozoa: evidence from genome-wide phylogenetic analysis.

A phylogenetic analysis of over 500 sets of orthologous proteins, which are represented in plants, animals, and fungi, using maximum likelihood, maximum parsimony, and distance methods showed concordance between evolution of protein sequences and higher-level evolutionary events, such as domain fusion or gene loss.

Tunicates and not cephalochordates are the closest living relatives of vertebrates

It is shown that phylogenetic analyses of the genome sequencing of the appendicularian Oikopleura dioica provide compelling evidence that tunicates, and not cephalochordates, represent the closest living relatives of vertebrates.

Animal Evolution and the Molecular Signature of Radiations Compressed in Time

The phylogenetic relationships among most metazoan phyla remain uncertain, but the differences in resolution within the two kingdoms suggest that the early history of metazoans was a radiation compressed in time, a finding in agreement with paleontological inferences.