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URN: urn:nbn:de:kobv:517-opus-44916
URL: http://opus.kobv.de/ubp/volltexte/2010/4491/


Mwinyi, Adina ; Meyer, Achim ; Bleidorn, Christoph ; Lieb, Bernhard ; Bartolomaeus, Thomas ; Podsiadlowski, Lars

Mitochondrial genome sequence and gene order of Sipunculus nudus give additional support for an inclusion of Sipuncula into Annelida

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Kurzfassung auf Englisch

Background:
Mitochondrial genomes are a valuable source of data for analysing phylogenetic
relationships. Besides sequence information, mitochondrial gene order may add phylogenetically useful information, too. Sipuncula are unsegmented marine worms, traditionally placed in their own phylum. Recent molecular and morphological findings suggest a close affinity to the segmented Annelida.

Results:
The first complete mitochondrial genome of a member of Sipuncula, Sipunculus nudus, is presented. All 37 genes characteristic for metazoan mtDNA were detected and are encoded on the same strand. The mitochondrial gene order (protein-coding and ribosomal RNA genes) resembles that of annelids, but shows several derivations so far found only in Sipuncula. Sequence based phylogenetic analysis of mitochondrial protein-coding genes results in significant bootstrap
support for Annelida sensu lato, combining Annelida together with Sipuncula, Echiura, Pogonophora and Myzostomida.

Conclusion:
The mitochondrial sequence data support a close relationship of Annelida and
Sipuncula. Also the most parsimonious explanation of changes in gene order favours a derivation from the annelid gene order. These results complement findings from recent phylogenetic analyses of nuclear encoded genes as well as a report of a segmental neural patterning in Sipuncula.

Freie Schlagwörter (englisch): Transfer-rna genes; Phylogenetic analysis; Animal phylogeny; Control region; Sister Taxau
Institut: Institut für Biochemie und Biologie
DDC-Sachgruppe: Biowissenschaften, Biologie
Dokumentart: c Postprint
Schriftenreihe: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372
Band Nummer: paper 124
Quelle: BMC Genomics 10 (2009), Art. 27, DOI: 10.1186/1471-2164-10-27
Sprache: Englisch
Erstellungsjahr: 2009
Publikationsdatum: 16.07.2010
Bemerkung:
The article was originally published at BioMed Central:
BMC Genomics. - 10 (2009), Art. 27 (16 S.)
ISSN 1471-2164
DOI 10.1186/1471-2164-10-27
Lizenz: Dieses Werk ist unter einer Creative Commons-Lizenz lizenziert.
Lizenz-Logo  Creative Commons - Namensnennung, 2.0 Deutschland


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