• 식물병연구
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• 제9권1호
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• pp.1-9
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• 2003

The occurrence of potato(Sotanum tuberosum) viral diseases caused by Potato virus X(PVX), Potato virus Y (PVY), Potato leafroll virus(PLRV), Potato vims S(PVS), Potato virus M(PVM), Potato virus A(PVA), Potato virus T(PVT), Alfalfa mosic virus(AIMV), Tobacco mosic virus(TMV), Potato mop top virus(PMTV) Tobacco rattle virus(TRV) and Potato spindle tuber viroid(PSTVd), potato witches' broom phytoplasma, have been identified so far in Korea. Major viral diseases such as PVX, PVY and PLRV had been studied more deeply, however, the others are just identified and only partially characterized since the first study on the relation between PVX nucleic acid and virus protein by Kim in 1961. The most studies on potato viral diseases are mainly focused on the problems of seed potato production. The National Alpine Agricultural Experiment Station(NAAES), since it began its activities in 1961, has given special attention to this problem by doing studies to identify, characterize and control potato virus diseases. This effort resulted in the development of new potato virus detection methods as a basis for elaborating new method of control, such as the production of seed potato free of virus and the selection of new virus-resistant transgenic potatoes. The further studies of potato viral diseases required would be fallowings: the continuous monitoring for the occurrence of identified or not identified potato viruses in Korea, the isolation of resistant viral genes, the development of control method for the non-persistently transmitted viruses like PVY, special vectors such as nematode and fungus transmitted viruses, TRV and PMTV and the development of control methods against potato viral diseases by viral cross protection, therapy, transgenic plant, and the use of the agents or molecules, such as virus inhibitors and antiviral proteins, etc., blocking viral replication.

• The Plant Pathology Journal
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• 제18권6호
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• pp.323-327
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• 2002

A rod-shaped virus was isolated from pepper showing mild mosic during the winter growing seasons of 2001 and 2002 in Korea. Based on its biological reactions, serological relationships, reverse transcription-poly-merase chain reaction (RT-PCR) using specific primers, and nucleotide sequence analysis of coat protein (CP) gene, the isolated virus was identified as Tobacco mild green mosaic virus (TMGMV) and designated as Korean pepper isolate (TMGMV-KP). Crude sap from infected tissue was mechanically transmitted to various indicator plants, which produced characteristic symptoms of tobamovirus infection. However, no symptom was observed in Gomphorena globosa. In RT-PCR assays with specific primers toy respective detection of TMGMV, Tobacco mosaic virus (TMV), Pepper mild mottle virue (PMMoV), and Tomato mosaic virus (ToMV), a single strong band of about 500 bp in length was produced from the sample used only with TMGMV primers. The amplified DNA was cloned and the nucleotide sequence was determined. Sequence comparisons with the CP gene of other tobamoviruses indicated that TMGMV-KP shared 99.3％ identity with TMGMV Japanese isolate and only 59.1, 58.6, and 58.1％ identity with TMV, PMMoV and ToMV, respectively. This is the first report of TMGMV in Korea.

• 자연과학논문집
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• 제10권1호
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• pp.23-26
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• 1998

2가 금속인 구리와 아연을 다양한 농도로 각각 담배모자이크 바이러스(TMV)에 처리하여 감염성에 어떤 영향을 주는 가를 조사하였다. TMV의 감염성은 아연의 첨가에 의해 활성화된 반면, 구리의 첨가에 의해 감소되었다. 아연을 첨가한 바이러스 접종원을 담배 잎에 처리한 결과 바이러스만을 접종한 잎보다 더 많은 국부반점이 생성되었다. TMV의 감염성을 감소시키는 구리의 효과는 구리의 농도에 관련되는 결과를 나타내었다. 또한 전기영동으로 다양한 농도의 구리와 아연에 처리된 TMV를 분석한 결과 그 특성이 변화됨이 관찰되었다. 아연 200mM 이상의 농도에 노출시 바이러스는 완전히 분해되었고, 40-20 mM 농도에서는 간신히 바이러스의 흔적을 찾을 수 있으나, 2 mM 농도에서는 상당히 안정되었다. 구리의 경우 20 mM 이하의 농도에 처리되었을 때 구조적으로 완전하게 남아있으나, 100 mM 이상의 처리에서는 완전히 분해되었다.