• Title/Summary/Keyword: Multiplex polymerse chain reaction

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Simultaneous Detection of Barley Virus Diseases in Korea (국내 맥류에 발생하는 바이러스병 동시진단 방법)

  • Lee, Bong-Choon;Bae, Ju-Young;Kim, Sang-Min;Ra, Ji-Eun;Choi, Nak Jung;Choi, Man Young;Park, Ki Do
    • Research in Plant Disease
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    • v.23 no.4
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    • pp.363-366
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    • 2017
  • Barley mild mosaic virus (BaMMV), Barley yellow mosaic virus (BaYMV) and Barley yellow dwarf virus (BYDV) have been identified as an important causative agents for an economically important disease of winter barley in Korea. In this study, a multiplex reverse transcription polymerase chain reaction (mRT-PCR) method was used for the simultaneous detection. Three sets of virus-specific primers targeted to the capsid protein coding genes of BaMMV, BaYMV and BYDV were used to amplify fragments that were 594 bp, 461 bp, and 290 bp, respectively. Several sets of primers for each target virus were evaluated for their sensitivity and specificity by multiplex RT-PCR. The optimum primer concentrations and RT-PCR conditions were determined for the multiplex RT-PCR. The mRT-PCR assay was found to be a better and rapid virus diagnostic tool of specific barley diseases and potential for investigating the epidemiology of these viral diseases.

Development of species-specific multiplex PCR assays of mitochondrial 12S rRNA and 16S rRNA for the identification of animal species (식육감별을 위한 미토콘드리아 12S rRNA와 16S rRNA 유전자의 종 특이적 multiplex PCR 기법 개발)

  • Koh, Ba-Ra-Da;Kim, Ji-Yeon;Na, Ho-Myung;Park, Seong-Do;Kim, Yong-Hwan
    • Korean Journal of Veterinary Service
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    • v.34 no.4
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    • pp.417-428
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    • 2011
  • Species-specific PCR assay was developed for detection of cattle, sheep, goat, horse, dog, pig, chicken, duck, goose, and turkey using mitochondrial 12S rRNA and 16S rRNA as target genes. Also, an internal positive control was used to detect possible false negatives by using 18S rRNA gene. We designed species-specific primers with amplicon length of 190, 219, 350, 467, 241, 119, 171, 229, 111 and 268 bp for cattle, sheep, goat, horse, dog, pig, chicken, duck, goose, and turkey respectively. The specificity of the primers was tested against the other 10 non-target animal species and a cross-reaction was not observed. We developed two multiplex PCR assays for the simultaneous identification of Korea's major livestock species (cattle, pig, chicken and duck) and poultry species (chicken, duck, goose and turkey) from analogous samples, retaining the same specificity. The limit of detection of the multiplex PCR assay (cattle, pig, chicken and duck) ranged between 1 pg and 0.1 pg of template DNA extracts from raw meat. Applying multiplex PCR assays to DNA extracts from experimental pork/beef and pork/chicken tested raw and heat-treated ($120^{\circ}C$ for 30 min) mixtures respectively, detection limit was 0.1% level beef in pork, pork in beef and chicken in pork and 1.0% level pork in chicken. In conclusion, this assay using gel-based capillary electrophoresis would be very useful in highly sensitive and rapid identification of animal species or ingredients in minced meat and other meat products.