title: Characteristics of a Lettuce mosaic virus Isolate Infecting Lettuce in Korea.
abstract: Lettuce mosaic virus (LMV) causes disease of plants in the family Asteraceae, especially lettuce crops. LMV isolates have previously been clustered in three main groups, LMV-Yar, LMV-Greek and LMVRoW. The first two groups, LMV-Yar and LMV-Greek, have similar characteristics such as no seed-borne transmission and non-resistance-breaking. The latter one, LMV-RoW, comprising a large percentage of the LMV isolates contains two large subgroups, LMV-Common and LMV-Most. To date, however, no Korean LMV isolate has been classified and characterized. In this study, LMV-Muju, the Korean LMV isolate, was isolated from lettuce showing pale green and mottle symptoms, and its complete genome sequence was determined. Classification method of LMV isolates based on nucleotide sequence divergence of the NIb-CP junction showed that LMV-Muju was categorized as LMV-Common. LMV-Muju was more similar to LMV-O (LMV-Common subgroup) than to LMV-E (LMV-RoW group but not LMV-Common subgroup) even in the amino acid domains of HC-Pro associated with pathogenicity, and in the CI and VPg regions related to ability to overcome resistance. Taken together, LMV-Muju belongs to the LMV-Common subgroup, and is expected to be a seed-borne, non-resistance-breaking isolate. According to our analysis, all other LMV isolates not previously assigned to a subgroup were also included in the LMV-RoW group.
authors.affiliation: Department of Biosystems and Bioengineering, University of Science and Technology, Daejeon 305-350, Korea ; Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Seungmo
authors.initials: S
authors.lastname: Lim
authors.affiliation: Department of Biosystems and Bioengineering, University of Science and Technology, Daejeon 305-350, Korea ; Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Fumei
authors.initials: F
authors.lastname: Zhao
authors.affiliation: Department of Biosystems and Bioengineering, University of Science and Technology, Daejeon 305-350, Korea ; Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Ran Hee
authors.initials: RH
authors.lastname: Yoo
authors.affiliation: Department of Biosystems and Bioengineering, University of Science and Technology, Daejeon 305-350, Korea ; Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Davaajargal
authors.initials: D
authors.lastname: Igori
authors.affiliation: Institute of Plant Medicine, Kyungpook National University, Daegu 702-701, Korea ; School of Applied Biosciences, Kyungpook National University, Daegu 702-701, Korea.
authors.forename: Su-Heon
authors.initials: SH
authors.lastname: Lee
authors.affiliation: Department of Applied Biology, Chungnam National University, Daejeon 305-764, Korea.
authors.forename: Hyoun-Sub
authors.initials: HS
authors.lastname: Lim
authors.affiliation: Department of Biosystems and Bioengineering, University of Science and Technology, Daejeon 305-350, Korea ; Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea.
authors.forename: Jae Sun
authors.initials: JS
authors.lastname: Moon
keywords: LMV; lettuce; potyvirus; resistance