Mitochondrial genome data support the basal position of Acoelomorpha and the polyphyly of the Platyhelminthes.

  title={Mitochondrial genome data support the basal position of Acoelomorpha and the polyphyly of the Platyhelminthes.},
  author={I{\~n}aki Ruiz-Trillo and Marta Riutort and H. Matthew Fourcade and Jaume Bagu{\~n}{\'a} and Jeffrey L. Boore},
  journal={Molecular phylogenetics and evolution},
  volume={33 2},

Platyzoan mitochondrial genomes.

Phylogenetic distribution of microRNAs supports the basal position of acoel flatworms and the polyphyly of Platyhelminthes

The limited set of miRNAs found in acoels, intermediate between the even more reduced set in cnidarians and the larger and expanding set in the rest of bilaterians, is compelling evidence for the basal position of acoel flatworms and the polyphyly of Platyhelminthes.

The phylogenetic position of Acoela as revealed by the complete mitochondrial genome of Symsagittifera roscoffensis

The phylogenetic analysis supports the view that acoels and nemertodermatids are the earliest divergent extant lineage of Bilateria and remain a valid source for seeking primitive characters present in the last common ancestor of Bilatersia.

The Complete Mitochondrial Genome of Dugesia japonica (Platyhelminthes; Order Tricladida)

This is the first complete sequence analysis of the mitochondrial genome of a free-living member of Rhabditophora, which will facilitate further studies on the population genetics and genomic evolution of the Platyhelminthes.

The mitochondrial DNA of Xenoturbella bocki: genomic architecture and phylogenetic analysis

A second complete mitochondrial genome of this species is sequenced and phylogenetic analyses based on the amino acid sequences of all 13 mitochondrial protein-coding genes and on its gene order confirm the deuterostome relationship of Xenoturbella.

Molecular phylogeny of the Platyhelminthes

Phylum-wide analyses based on complete ribosomal and other nuclear genes addressed to answer the main issues facing systematics and phylogeny of Platyhelminthes are reviewed.

Bilaterian phylogeny: a broad sampling of 13 nuclear genes provides a new Lophotrochozoa phylogeny and supports a paraphyletic basal acoelomorpha.

A new phylogeny not only agrees with most classical molecular results but also provides new insights into the relationships between lophotrochozoans and challenges the results obtained using high-throughput strategies, highlighting the problems associated with the current trend to increase gene number rather than taxa.

Lophotrochozoan mitochondrial genomes.

What is known about mitochondrial genomes of the lophotrochozoans and how comparisons of some of these features may be useful in discerning the phylogeny of this group are reviewed.



The mitochondrial genome of the Sipunculid Phascolopsis gouldii supports its association with Annelida rather than Mollusca.

Comparison of both the inferred amino acid sequences and the gene arrangements of a variety of diverse metazoan taxa reveals that the phylum Sipuncula is more closely related to Annelida than to Mollusca.

Afrotherian phylogeny as inferred from complete mitochondrial genomes.

Complete sequence of the mitochondrial genome of the tapeworm Hymenolepis diminuta: gene arrangements indicate that Platyhelminths are Eutrochozoans.

Comparison of the mitochondrial gene arrangement of H. diminuta with those previously published supports a phylogenetic position of flatworms as members of the Eutrochozoa, rather than placing them basal to either a clade of protostomes or aClade of coelomates.

Combined large and small subunit ribosomal RNA phylogenies support a basal position of the acoelomorph flatworms

It is concluded that the Nemertodermatida and Acoela are basal bilaterians and, owing to their unique body plan and embryogenesis, should be recognized as a separate phylum, the Acoelomorpha.

The Nemertodermatida are basal bilaterians and not members of the Platyhelminthes

The results imply that the last common ancestor of bilaterian metazoans was a small, benthic, direct developer without segments, coelomic cavities, nephrida or a true brain.

Changes in mitochondrial genetic codes as phylogenetic characters: two examples from the flatworms.

A rapid computerized method for analyzing genetic codes is developed and demonstrated the wide phylogenetic distribution of the standard invertebrate code as well as confirming already known metazoan deviations from it (ascidian, vertebrate, echinoderm/hemichordate).

Sequence Analysis of the Mitochondrial Genome of Sarcophyton glaucum: Conserved Gene Order Among Octocorals

Abstract. The nucleotide sequence for an 11,715-bp segment of the mitochondrial genome of the octocoral Sarcophyton glaucum is presented, completing the analysis of the entire genome for this

Basal actinopterygian relationships: a mitogenomic perspective on the phylogeny of the "ancient fish".

The Hox gene complement of acoel flatworms, a basal bilaterian clade

The Hox gene complement of the acoel flatworms is examined and similar gene sets found in two distantly related acoels suggest that this reduced gene complement may be ancestral in the acOels and that the aceels may have diverged from other bilaterian animals before elaboration of the 8‐ to 10‐gene Hox cluster that characterizes most bilaterians.