GMO detection refers to analytical methods used to identify genetically modified organisms by detecting the presence of introduced DNA sequences, proteins, or other molecular markers that distinguish them from non-modified counterparts. In plant science, these techniques are essential for ensuring regulatory compliance, maintaining the integrity of non-GMO supply chains, and supporting biodiversity research by accurately characterizing plant material. Methods such as PCR-based assays, immunoassays, and next-generation sequencing enable researchers and regulators to verify the genetic composition of crop varieties and wild plant populations.
Scientists developed a new lab test called BeadPlex2 that can simultaneously detect multiple genetic modifications in crops with high accuracy, using CRISPR gene-targeting technology combined with light-scattering nanoparticles attached to magnetic beads.
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Five distinct types of magnetic bead sensors (MagGERTs) were created, each encoding a unique Raman spectral signature to enable simultaneous multiplex detection of GM events
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The system uses CRISPR/dCas9 (a DNA-binding version of CRISPR that does not cut DNA) for highly precise target recognition, reducing false positives compared to traditional methods
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The BeadPlex2 platform was validated across diverse genetically modified crop events, demonstrating broad applicability for GM crop identification
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