Mitogenomics reveals phylogeny and repeated motifs in control regions of the deep-sea family Siboglinidae (Annelida)

Li, Yuanning, Kocot, Kevin M, Schander, Christoffer, Santos, Scott R, Thornhill, Daniel J and Halanych, Kenneth M (2015) Mitogenomics reveals phylogeny and repeated motifs in control regions of the deep-sea family Siboglinidae (Annelida). Molecular Phylogenetics and Evolution, 85 221-229. doi:10.1016/j.ympev.2015.02.008


Author Li, Yuanning
Kocot, Kevin M
Schander, Christoffer
Santos, Scott R
Thornhill, Daniel J
Halanych, Kenneth M
Title Mitogenomics reveals phylogeny and repeated motifs in control regions of the deep-sea family Siboglinidae (Annelida)
Journal name Molecular Phylogenetics and Evolution   Check publisher's open access policy
ISSN 1095-9513
1055-7903
Publication date 2015-04
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.ympev.2015.02.008
Open Access Status
Volume 85
Start page 221
End page 229
Total pages 9
Place of publication Maryland Heights, United States
Publisher Academic Press Inc.
Collection year 2016
Language eng
Abstract Deep-sea tubeworms in the annelid family Siboglinidae have drawn considerable interest regarding their ecology and evolutionary biology. As adults, they lack a digestive tract and rely on endosymbionts for nutrition. Moreover, they are important members of chemosynthetic environments including hydrothermal vents, cold seeps, muddy sediments, and whale bones. Evolution and diversification of siboglinids has been associated with host-symbiont relationships and reducing habitats. Despite their importance, the taxonomy and phylogenetics of this clade are debated due to conflicting results. In this study, 10 complete and 2 partial mitochondrial genomes and one transcriptome were sequenced and analyzed to address siboglinid evolution. Notably, repeated nucleotide motifs were found in control regions of these mt genomes, which may explain previous challenges of sequencing siboglinid mt genomes. Phylogenetic analyses of amino acid and nucleotide datasets were conducted in order to infer evolutionary history. Both analyses generally had strong nodal support and suggest Osedax is most closely related to the Vestimentifera + Sclerolinum clade, rather than Frenulata, as recently reported. These results imply Osedax, the only siboglinid lineage with heterotrophic endosymbionts, evolved from a lineage utilizing chemoautotrophic symbionts.
Keyword Mitogenomic
Osedax
Control region
Size variations
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Biological Sciences Publications
 
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