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. 2010 Mar;155(3):417-22.
doi: 10.1007/s00705-010-0595-2. Epub 2010 Feb 3.

Detection and molecular characterization of porcine toroviruses in Korea

Dong-Jun Shin  1 , Sang-Ik Park, Young-Ju Jeong, Myra Hosmillo, Ha-Hyun Kim, Hyun-Jeong Kim, Hyung-Jun Kwon, Mun-Il Kang, Su-Jin Park, Kyoung-Oh Cho
Affiliations

Detection and molecular characterization of porcine toroviruses in Korea

Dong-Jun Shin et al. Arch Virol. 2010 Mar.

Abstract

This study examined the prevalence and genetic diversity of the porcine torovirus (PToV) in Korea. Of 295 samples, 19 (6.4%) samples tested positive for PToVs by RT-PCR. A low nucleotide sequence identity of the partial S gene was detected among the Korean PToVs (73.5%) and between the Korean and European PToVs (74.0%). Phylogenetic analysis of the spike and nucleocapsid genes showed that the Korean PToVs form distinct branches with clusters corresponding to the farm of origin, which were separate from the other known foreign PToVs. These findings suggest that genetically diverse Korean PToV strains cause sporadic infections in Korea.

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Figures

Fig. 1
Fig. 1
Phylogenetic trees based on the nucleotide sequences of the Korean porcine torovirus, indicating its genetic relationship with the other known toroviruses. The new Korean strains are indicated by a filled diamond. a Spike protein gene. b Nucleocapsid protein gene. c Hemagglutinin-esterase gene. d Membrane protein gene
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