Detection of P35S and Tnos genes by Real-Time PCR in maze cultivated in El Salvador

Authors

DOI:

https://doi.org/10.69789/cc.v17i2.755

Keywords:

Transgenes, Tnos gene, Real-time PCR, Genetically modified organisms, El Salvador

Abstract

Maize is one of the most consumed foods worldwide. For this reason, certain areas of science have created methods to be able to genetically modify this food with transgenes and obtain greater consumption and economic benefits. Two types of maize were studied in which the two target transgenes were searched for by means of real-time polymerase chain reaction (PCR). The study of genetically modified organisms is almost non-existent in our country. Objective: To identify transgenes by real-time PCR in maize grown in El Salvador in 2023. Methodology: Extraction kits for genetically modified organisms, amplification kits with Thermo Fisher Scientific Taqman probes and a MyGo Mini S real-time PCR thermocycler were used. A quantitative, descriptive, cross-sectional study was carried out. Maize samples were taken from the 14 departments that met the inclusion criteria, 112 samples were collected, choosing the maize fields by convenience. 75 grams were extracted from each ear of maize to extract the deoxyribonucleic acid and it was purified to subsequently perform real-time PCR for the amplification of the P35S and Tnos genes. Results: 24 positive samples were obtained for both transgenes. The data obtained from the Ct (cycle threshold) for the P35s gene were: mean of 31.60, minimum data: 24, maximum data: 42. For Tnos: mean of 32.74, minimum data: 27, maximum data: 40 Conclusion: Amplified transgenes are present in maize harvested in El Salvador.

Author Biographies

Emerson Pocasangre, Universidad Evangélica de El Salvador, El Salvador

Head of the Department of Microbiology and Immunology at the Faculty of Medicine of the Evangelical University of El Salvador. Master's degree in Microbiology and Food Safety.

Fidel Omar  Mendoza Ramírez, Universidad Evangélica de El Salvador, El Salvador

Tenured professor and researcher in the Department of Microbiology and Immunology at the Faculty of Medicine of the Evangelical University of El Salvador. Diploma in Scientific Research.

References

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Published

11-07-2024

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Artículo de investigación

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