Development of specific primers for the detection of HVA1 from barley in transgenic durum wheat by polymerase chain reaction (PCR) technology
Author(s)
Citation
Marouane Melloul, Driss Iraqi, Sripada M. Udupa, My Abdelaziz El Alaoui, Sanaa Alaoui, Mohammed Ibriz, Elmostafa Elfahime. (18/1/2014). Development of specific primers for the detection of HVA1 from barley in transgenic durum wheat by polymerase chain reaction (PCR) technology. African journal of biotechnology, 13 (4), pp. 581-592.
Abstract
Genetic transformation is a widely employed tool in both basic research and commercial plant breeding
programs. Its application requires that transgenes be stably integrated and expressed in the plant
genome. When transgenic plants are developed, it is essential to determine which plants contain the
transgene. Detection methods are usually based on amplification of the target transgene. This paper
describes a development of detection method based on conventional and real time polymerase chain
reaction (PCR) for simultaneous detection of barley HVA1 transgene and its transcript in transformed
durum wheat. Since there exist a high homology between the barley HVA1 gene and the wheat gene,
development of a specific sets of primers is needed for PCR-based characterizations, and the study of
the transgene. Based on the alignment of the two genes sequences obtained from public databases,
several primers were designed to detect and distinguish between the transformed and non-transformed
plants. Real time PCR has been employed because of its inherent sensitivity and quantitative nature. It
has been possible to design the following primers pairs F2/MMR, F2/R10 and F14/R10 as highly specific
and suitable for the detection of HVA1 DNA by conventional and real-time PCR. Nonetheless, the
primers used were allowed to reach high efficiencies and did not show any cross-reactivity with DNAs
extracted from various plants. The sensitivity achieved was 6.4 pg. The primer pair F2/R10 was
considered as highly specific for the detection of both DNA and mRNA of the HVA1 by real-time PCR.
The assays proved to be accurate, specific, sensitive and sufficiently reproducible for further
application in high-throughput molecular characterization of transgenic lines.
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Author(s) ORCID(s)
Udupa, Sripada M.https://orcid.org/0000-0003-4225-7843
Subject(s)
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