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Development and comparative study of a pat/bar real‐time PCR assay for integrating the screening strategy of a GMO testing laboratory
Author(s) -
Verginelli Daniela,
Paternò Annalisa,
De Marchis Maria Laura,
Quarchioni Cinzia,
Vinciguerra Daniela,
Bonini Pamela,
Peddis Stefania,
Fusco Cristiana,
Misto Marisa,
Marfoglia Cristina,
Pomilio Francesco,
Marchesi Ugo
Publication year - 2020
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.10235
Subject(s) - european union , microbiology and biotechnology , flexibility (engineering) , real time polymerase chain reaction , workflow , biochemical engineering , computer science , computational biology , engineering , biology , business , mathematics , statistics , genetics , economic policy , database , gene
BACKGROUND The number and variety of genetically modified organisms (GMOs) used globally for the production of food and feed, and potentially circulating in the European Union (EU), is constantly increasing. This implies an additional effort for the EU enforcement laboratories to optimize available resources, to contain costs and time. A well established approach for streamlining the analytical workflow is the introduction of a screening step, typically based on a smart set of real‐time polymerase chain reaction (PCR) screening methods. The multiplexing strategy, allowing the detection of several screening elements simultaneously, is a further optimization of this step. RESULTS In this study, we present the validation of a real‐time PCR duplex assay for the pat and bar screening elements to be easily incorporated in the GMO diagnostic routine. We also provide a comparison between this method and the related singleplex and pre‐spotted assays. CONCLUSION Our results fully respect all the validation parameters suggested by the Minimum Performance Criteria of the European Network of GMO Laboratories. Furthermore, the duplex assay is equivalent in terms of performance compared to the other two methods, but it shows a higher overall flexibility and cost effectiveness. © 2019 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.