• Title/Summary/Keyword: Seoul virus

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Analysis on antibody titer of structural protein after vaccination against foot-and-mouth disease virus (Type O) in zoo animals (동물원 동물에서 백신접종 후 구제역바이러스(O형) 구조단백질 항체가 분석)

  • Lee, Hyun-Ho;Eo, Kyung-Yeon
    • Korean Journal of Veterinary Service
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    • v.45 no.2
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    • pp.125-131
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    • 2022
  • The purpose of this study was to examine antibody titers to structural protein (SP) of the foot-and-mouth disease (FMD) virus after vaccination in animals of the Seoul zoo. After the initial inoculation of FMD vaccine to the susceptible animals of the zoo, a total of 235 blood samples were collected from 42 species of zoo animals during treatment or necropsy. All samples were tested by using enzyme-linked immunosorbent assay (ELISA). The overall positive rate of SP antibodies against FMD virus was 94.0% (221/235). However, the positive rates varied according to animal species. The results of positive rates in 30 species were 100% but in 12 species were 50-94.7%. We showed that most animals that have received FMD vaccine in Seoul zoo have been reached to the level of herd immunity against FMD virus after the vaccination. To the best of our knowledge, this study would be the first report for monitoring the vaccine-induced SP antibody titers against FMD virus after vaccination in various zoo animal species in Korea.

Complete sequence of genome RNA of Pepper mottle virus Korean isolate

  • H.I. Yoon;J, Y. Yoon;Park, G.S.;Park, J.K.;K.H. Ryu
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.147.2-148
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    • 2003
  • Complete nucleotide sequence of genome RNA of a Korean isolate of Pepper mottle virus (PepMoV-Vb) from field-collected diseased paprika (Capsicum annuum var grossum) was determined in this study. Symptoms of isolates of PepMoV were divided largely into two groups, vein banding (Vb) and vein clearing (Vc) patterns. PepMoV-Vb RNA consists of 9,640 nucleotides excluding the poly(A) tail. A single open reading frame was identified beginning at nucleotide position 169 encoding a polyprotein of 3024 amino acids which is typical of the Potyvirus genus. The complete nucleotide sequence and coding regions of PepMoV-Vb were compared to that of 11 potyviruses within the genus Potyvirus. The overall nucleotide sequence identity was 94.7 and 94.1% identical to PepMoV-C and PepMoV-FL, respectively. Full-length cDNAs of PepMoV-Vbl were synthesized from purified viral RNAs by RT-PCR and their genome structure was analysed by RFLP analysis. This is the first report on complete nucleotide sequence of PepMoV isolated from paprika in Korea.

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Maturation of the Granulosis Virus of Common Cabbage Worm, Pieris rapae (배추흰나비 과립병(顆粒病)바이러스 감염조직(感染組職)에서의 바이러스 성숙(成熟))

  • Ryu, Kang-Sun;Kang, Seok-Kwon
    • Applied Microscopy
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    • v.21 no.1
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    • pp.77-85
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    • 1991
  • The virus maturation in fat body cells infected with P. rapae granulosis virus were also examined to have the following results. Thin section of P. rapae GV granules showed a regular lattice of the granule enclosing virus particles. Virus particles were observed to penetrate the fat body cells by fusion or viropexis type. The blood and fat body cells uptaked the granulosis viruses a phagosome, in which they were digested by lysosomal enzymes.

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Plant Virus Genomics

  • Ryu, Ki-Hyun
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2002.09a
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    • pp.196.1-196
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    • 2002
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Feline Panleukopenia Virus Infection in a Siberian Tiger (Panthera tigris altaica) (시베리아 호랑이에서의 고양이범백혈구감소증)

  • Jung, Iruo;Kim, Yeong-Sub;Jee, Hyang;Sohn, Suh-Young;Yoo, Han-Sang;Kim, Dae-Yong;Youn, Hwa-Young;Shin, Nam-Shik
    • Journal of Veterinary Clinics
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    • v.26 no.5
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    • pp.504-507
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    • 2009
  • An 1-year old male siberian tiger showing severe vomiting and blackish and frothy diarrhea for 3 days were dead in Seoul Zoo. Gross finding at necropsy were small amount of blood were found in abdominal cavity and intestine. In small and large intestine, there were necrosis and detachment epithelial cell of intestinal mucosa in histopathology. The presence of feline panleukopenia virus (FPV) antigen was detected by PCR. In microbiology, E.coli and Enterococcus faecalis were isolated from the stool. This case was diagnosed in death induced by FPV infection according to CBC, histopathology and PCR.

Molecular Analysis of the 3'-Terminal Region of Lily Latent Carlavirus from Lilium lancitoium

  • Ryu, Ji-Hwan;Park, Hye-Won;Park, Won-Mok;Lee, Se-Yong;Ryu, Ki-Hyun
    • The Plant Pathology Journal
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    • v.16 no.4
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    • pp.231-235
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    • 2000
  • The 3,000 nucleotides of 3'-terminal region of the genomic RNA of a new isolate of carlavirus from a Korean native lily (Lilum lancitoium) was cloned and its nucleotide sequences were determined. The coat protein (CP) gene of the virus showed 72.0% to 72.8% nucleotide sequence identities and 86.9% to 88.0% amino acid sequence identities with those of the four strains (two Korean, one Dutch, and one Japanese isolates) of lily symptomless virus (LSV). Interestingly, different amino acid sequences between the new isolate and LSV strains were located at the N-terminal region of the CP. Pairwise amino acid sequence comparison of the CP gene revealed sequence identities of 22.0% to 71.1% between the virus and other 9 carlavirus species. The 25 kDa and 12 kDa proteins genes of the virus share 30.7% to 76.3% and 31.1% to 85.8% amino acid sequence identities, respectively, with those of 8 other carlaviruses. The 16 kDa protein gene of the virus shares 16.7% to 72.9% amino acid sequence identities with that of 9 other carlaviruses. These data indicate that the virus, designated as lily latent virus (LiLV), is a distinct of the Carlavirus genus and distinguished from the known strains of LSV.

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First Report of Zucchini yellow mosaic virus on Hollyhock (Althaea rosea)

  • Park, Won-Mok;Park, Seung-Kook;Yoon, Ju-Yeon;Ryu, Ki-Hyun;Park, Jang-Kyung
    • The Plant Pathology Journal
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    • v.18 no.3
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    • pp.121-125
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    • 2002
  • This study was conducted to determine the causal virus that naturally infected hollyhock (Althaea rosea) plant showing mild mosaic symptom in 1999. Flexuous virus particles were found in the cytoplasm of plant tissue from infected hollyhock under transmissible electron microscopy. A virus from the genus Potyvirus under the family Potyviridae was isolated and was maintained on Chenopodium quinoa for three passages. Chlorotic local legions were used to inoculate 20 species of indicator plants. The virus infected all the tested cucurbit plants, but failed to infect Nicotiana benthamiana. Based on the host range test and RT-PCR analysis, the potyvirus was identified as a strain of Zucchini yellow mosaic virus-A (ZYMV-A), one of the major pathogens of cucurbits. Infectivity analysis showed that ZYMV-A induced faster systemic symptom than ZYMV-Cu on squash and other cucurbit plants, suggesting that ZYMV-A was a more severe strain. To better characterize ZYMV-A, Western blot assay was carried rout to the coat protein (CP) of the virus using ZYMV-specific antiserum with ZYMV-Cu and other potyviruses. The CP of the virus reacted strongly with the antiserum against ZYMV, and other tested antisera did not react with the CP of ZYMV-A. Results strongly suggest that the potyvirus infecting hollyhock was a novel strain of ZYMV. This is the first report on ZYMV as the causal virus infecting hollyhock in Korea.