PCR amplification of repetitive sequences as a possible approach in relative species quantification

Research output: Contribution to journalJournal articleResearchpeer-review

Nicolai Zederkopff Ballin, Finn Kvist Vogensen, Anders H Karlsson

Abstract Both relative and absolute quantifications are possible in species quantification when single copy genomic DNA is used. However, amplification of single copy genomic DNA does not allow a limit of detection as low as one obtained from amplification of repetitive sequences. Amplification of repetitive sequences is therefore frequently used in absolute quantification but problems occur in relative quantification as the number of repetitive sequences is unknown. A promising approach was developed where data from amplification of repetitive sequences were used in relative quantification of species in binary mixtures. PCR LUX primers were designed that amplify repetitive and single copy sequences to establish the species dependent number (constants) (SDC) of amplified repetitive sequences per genome. The SDCs and data from amplification of repetitive sequences were tested for their applicability to relatively quantify the amount of chicken DNA in a binary mixture of chicken DNA and pig DNA. However, the designed PCR primers lack the specificity required for regulatory species control.
Original languageEnglish
JournalMeat Science
Volume90
Issue number2
Pages (from-to)438-443
Number of pages6
ISSN0309-1740
DOIs
Publication statusPublished - 2012

ID: 49644889