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Identification of mammal species using species-specific DNA pyrosequencing
National Board of Forensic Medicine.
Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Health Sciences.
2007 (English)In: Forensic Science International, ISSN 0379-0738, Vol. 173, no 1, 16-20 p.Article in journal (Refereed) Published
Abstract [en]

In forensic casework it is highly relevant to be able to deduce the species origin of an unknown biological sample. For such a purpose we have designed and developed an assay for species identification based on DNA sequencing of two short mitochondrial DNA amplicons. In short, partial 12S rRNA and partial 16S rRNA fragments (similar to 100 bp) are amplified by PCR followed by direct sequencing using pyrosequencing technique. Due to properties of the chosen targets, the same PCR conditions and primers were used irrespective of the true species of an unknown sample. A total of 28 different mammals present in the European fauna were sequenced both for the partial 12S rRNA and the partial 16S rRNA sequences for accuracy verification. Together the two sequences showed to have a high divergence factor, discriminating almost all mammals. Furthermore, the human reference nucleotide sequences were always at least nine nucleotides different compared to the other sequenced species both at the partial 12S rRNA and the partial 16S rRNA sequences.

Place, publisher, year, edition, pages
2007. Vol. 173, no 1, 16-20 p.
Keyword [en]
species identification; pyrosequencing; mitochondrial DNA; wildlife forensics
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-53630DOI: 10.1016/j.forsciint.2007.01.019OAI: diva2:290306
Available from: 2010-01-26 Created: 2010-01-26 Last updated: 2010-01-26

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Holmlund, Gunilla
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Department of Clinical and Experimental MedicineFaculty of Health Sciences
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ReferencesLink to record
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