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Detection of Apple Scar Skin Viroid by Reverse Transcription Recombinase Polymerase Amplification Assay

  • Kim, Na-Kyeong (Department of Applied Biology, Institute of Environmentally Friendly Agriculture, Chonnam National University) ;
  • Lee, Hyo-Jeong (Department of Applied Biology, Institute of Environmentally Friendly Agriculture, Chonnam National University) ;
  • Ryu, Tae-Ho (Department of Applied Biology, Institute of Environmentally Friendly Agriculture, Chonnam National University) ;
  • Cho, In-Sook (Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Ju, Ho-Jong (Department of Agricultural Biology, College of Agriculture & Life Sciences, Jeonbuk National University) ;
  • Jeong, Rae-Dong (Department of Applied Biology, Institute of Environmentally Friendly Agriculture, Chonnam National University)
  • Received : 2021.06.17
  • Accepted : 2021.06.29
  • Published : 2021.06.30

Abstract

The aim of the present study was to develop a sensitive and specific detection method for the rapid detection of apple scar skin viroid (ASSVd) in apple leaves. The resulting reverse transcription recombinase polymerase amplification (RT-RPA) assay can be completed in 10 min at 42℃, is 10 times more sensitive than conventional reverse transcription polymerase chain reaction, and can specifically amplify ASSVd without any cross-reactivity with other common apple viruses, including apple stem grooving virus, apple stem pitting virus, and apple chlorotic leaf spot virus. The reliability of the RT-RPA assay was assessed, and the findings suggested that it can be successfully utilized to detect ASSVd in field-collected samples. The RT-RPA assay developed in the present study provides a potentially valuable means for improving the detection of ASSVd in viroid-free certification programs, especially in resource-limited conditions.

Keywords

Acknowledgement

This work was carried out with the support of Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ014947032021) Rural Development Administration, Republic of Korea.

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