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    Five simplex and a multiplex-RT-PCR (m-RT-PCR) protocols were developed for detection and differentiation of bean pod mottle virus (BPMV), cherry leaf roll virus (CLRV), raspberry ringspot virus (RpRSV), soybean mosaic virus (SMV) and tomato ringspot virus (ToRSV) infecting soybean. The simplex RT-PCR protocols produced virus-specific amplicons of 538 bp for BPMV, 139 bp for CLRV, 298 bp for RpRSV, 403 bp for SMV, and 282 bp for ToRSV, with sensitivity down to 10-4 diluted cDNA. Further, to detect all the five viruses simultaneously in a single tube a quintuplex RT-PCR protocol was optimized with as low as 10-3 diluted cDNA and 0.05 µM primer. To validate the reliability of the simplex RT-PCR protocol, imported soybean samples were tested by ELISA as well as RT-PCR. The results revealed that the developed protocol could detect the viruses in imported soybean, and found to be efficient than ELISA in resolving ambiguity in detection of seed borne viruses. The developed simplex and quintuplex RT-PCR protocol will be quite helpful for the diagnosis of soybean germplasm co-infected with viruses during the quarantine processing for ensuring virus free long term seed conservation in the National Gene Bank as well as for quarantine certification. Copyright © 2024 Elsevier B.V. All rights reserved.

    Citation

    K Kalaiponmani, B Parameswari, A Tripathi, V Celia Chalam. Development of simplex and quintuplex RT-PCR for simultaneous detection of soybean viruses. Journal of virological methods. 2024 Dec;330:115010

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    PMID: 39222751

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