Affiliation:
1. National Institute of Nutrition (ICMR), Jamai Osmania PO, Hyderabad 500007, India
Abstract
Abstract
A detection method for genetically modified foods is an essential regulatory requirement for many countries. The present study is aimed at developing a qualitative method for detection of genetically modified organisms by combining PCR methodology with capillary gel electrophoresis (PCR-CGE) in a sequencing platform to detect Bacillus thuringiensis (Bt)-cotton (MON 531)and Roundup Ready (RR) soybean (GTS 40-3-2). A sensitive duplex PCR-CGE method was developed in which target DNA sequences (35S and Nos) were separated both by size and color to detect 0.01% Cry1Ac DNA (w/w) in Bt-cotton. A multiplex PCR-CGE method was developed to simultaneously detect fourtargets such as Sad1, Cry1Ac, 35S, and Nos in Bt-cotton. Four novel PCR primers were designed to customize amplicon size for multiplexing for better visualizationof multiple peaks. The LOD for Cry1Ac DNA specific PCR was 0.01% for Bt-cotton. The LOD for multiplex PCR assay was 0.05% for Bt-cotton. A singleplex PCR-CGE method was developed to detect Lec, 35S and Nos in a trace sample of RR soybean grainpowder (0.1%, w/w). This study demonstrates aPCR-CGE-based method for the qualitative detection of35S, Nos and Cry1Ac targets associated with genetically modifiedproducts.
Publisher
Oxford University Press (OUP)
Subject
Pharmacology,Agronomy and Crop Science,Environmental Chemistry,Food Science,Analytical Chemistry
Cited by
19 articles.
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