A novel Loop-mediated Isothermal Amplification Method for Screening Detection of Genetically Modified Cotton

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ID: 321277
2026
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Abstract
Abstract Background Limited domestic cotton production in Japan has led to large amounts of cottonseed being imported for food and feed. Consequently, genetically modified (GM) cotton seeds have been introduced into the country, and a qualitative method is required for the detection of unauthorized GM cotton. Objective The aim of this study is to develop a testing method that is simpler, more rapid, and more cost-effective than conventional polymerase chain reaction (PCR) technique. Methods A novel method was developed for the screening detection of unauthorized GM cotton seeds using loop-mediated isothermal amplification (LAMP) to target the 35S promoter of the cauliflower mosaic virus (P35S), neomycin phosphotransferase Ⅱ (NPTII), and the endogenous cotton gene stearoyl acyl carrier protein desaturase (sad1). Results The method limit of detection (LOD) was determined to be ≤ 0.1%, which is equivalent to the corresponding LOD achieved using the conventional PCR method. A simpler detection method based on single-stranded tag hybridization on a chromatography-printed-array strip system (denoted DNA chromatography) was also developed. This method allowed visual detection of the amplification of multiple DNA samples at the LOD level. Conclusions Compared with the conventional PCR approach, the developed detection method is cost-effective, rapid, and simple. Highlights The developed method facilitates the analysis of GM crops and will be expected to help prevent the unintended spread of GM crops into the environment.
Reference Key
openalex_W7168863174 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Mika Matsumoto, Mari Onishi, Yasutaka Minegishi, Reona Takabatake
Journal journal of aoac international
Year 2026
DOI
10.1093/jaoacint/qsag066
URL
https://doi.org/10.1093/jaoacint/qsag066
Keywords Keywords not found

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