Genetic Compositions of Broad bean wilt virus 2 Infecting Red Pepper in Korea

• Published in: The plant pathology journal Vol. 29; no. 3; pp. 274 - 284
• Main Authors: Kwak, H.R., National Academy of Agricultural Science, Suwon, Republic of Korea, Kim, M.K., National Academy of Agricultural Science, Suwon, Republic of Korea, Nam, M., National Academy of Agricultural Science, Suwon, Republic of Korea, Kim, J.S., National Academy of Agricultural Science, Suwon, Republic of Korea, Kim, K.H., Chungbuk National University, Cheongju, Republic of Korea, Cha, B.J., Chungbuk National University, Cheongju, Republic of Korea, Choi, H.S., National Academy of Agricultural Science, Suwon, Republic of Korea
• Format: Journal Article
• Language: English
• Published: Korea (South) 한국식물병리학회 01.09.2013; Korean Society of Plant Pathology; Hanrimwon Publishing Company
• Subjects: BBWV2; BIODIVERSIDAD; BIODIVERSITE; BIODIVERSITY; CHILLIES; genetic diversity; GENETIC RESOURCES; GUINDILLA; PIMENT FORT; RECURSOS GENETICOS; red pepper; RESSOURCE GENETIQUE; 농학; genetic diversity; BBWV2; red pepper
• ISSN: 1598-2254; 2093-9280
• DOI: 10.5423/PPJ.OA.12.2012.0190

The incidence of Broad bean wilt virus 2 (BBWV2) on red pepper was investigated using the samples obtained from 24 areas of 8 provinces in Korea. Two hundred and five samples (79%) out of 260 collected samples were found to be infected with BBWV2. While the single infection rate of BBWV2 was 21.5%, the coinfection rate of BBWV2 with Cucumber mosaic virus, Pepper mottle virus, Pepper mild mottle virus and/or Potato virus Y was 78.5%. To characterize the genetic diversity of BBWV2 Korean isolates, 7 isolates were fully sequenced and analyzed. Phylogenetic analyses revealed that BBWV2 isolates could be divided largely into two groups as Group I and Group II. Based on the partial sequence analyses, 153 selected BBWV2 isolates were subgrouped into GS-I (21.6%), GS-II (3.9%) and GS-III (56.9%). BBWV2 GS-III, which was predominant in Korea, appears to be a new combination between Group I RNA-1 and Group II RNA-2. Viral disease incidence of BBWV2 on red pepper was under 2% before 2004. However, the incidence was increased abruptly to 41.3% in 2005, 58.2% in 2006 and 79% in 2007. These rapid increases might be related with the emergence of new combinations between BBWV2 groups.