• The Plant Pathology Journal
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• 제18권1호
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• pp.18-22
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• 2002

Two peptaibol antibiotics, peptavirins A and B, which exhibited strong inhibitory effect against Tobacco mosaic vials (TMV) infection, were isolated from steam-cooked rice culture of Apiocrea sp.14T. The peptavirins were identified as new derivatives of chrysospermins, which are 19-mer and have been reported to be produced in a fungal isolate. The physicochemical properties of the peptavirins were mostly identical with chrysospermins A through D except for the UV absorption spectrum. The peptavirins inhibited the growths of the Grampositive bacteria tested, including the plant pathogenic bacterium, Corynebacterium lilium, and the fungus, Aspergillus niger. Peptavirin A was somewhat cytotoxic to cancer cell lines, especially K562 (leukemia) and UACC 62 (melanoma), whereas peptavirin B only exhibited slight cytotoxicity.

• The Plant Pathology Journal
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• 제21권3호
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• pp.258-261
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• 2005

We conducted a survey on pepper virus diseases in 31 regions in Korea from November 2001 to December 2004. Using electron microscopy, test plant reaction, rapid immuno-filter paper assay (RIPA), reverse transcription-polymerase chain reaction (RT-PCR) and/or analysis of viral nucleotide sequences, we found a number of viruses from 1,056 samples that we collected. These included Cucumber mosaic virus (CMV), Pepper mottle virus (PepMoV), Pepper mild mottle virus (PMMoV), Broad bean wilt virus 2 (BBWV2), Tobacco mild green mosaic virus (TMGMV), and Tomato spotted wilt virus (TSWV). Of the samples analyzed, $343(32.5\%)$ were infected with CMV, $209(19.8\%)$ with PepMoV, $141(13.4\%)$ with PMMoV, $12(1.1\%)$ with BBWV2, $40(3.8\%)$ with TMGMV, $5(0.5\%)$ with TSWV, $153(14.5\%)$ with CMV and PepMoV, $54 (5.1\%)$ with CMV and PMMoV, $31(2.9\%)$ with PepMoV and PMMoV, $3(0.3\%)$ with CMV and BBWV2, $1(0.1\%)$ with CMV, PepMoV and BBWV2, $8(0.8\%)$ with CMV, PepMoV and PMMoV, and $30 (2.8\%)$ samples were infected with viruses which were not identified. CMV was the most predominant virus in all inspected fields and the number of the samples infected with PMMoV was relatively low as compared PepMoV infection level in pepper. TMGMV was only found in the southern part of Korea, while TSWV was isolated in Anyang and Yesan. However, we did not encounter in this survey the Alfalfa mosaic virus (AMV), Potato virus Y (PVY), Tobacco mosaic virus (TMV), and Pepper vein chlorosis virus (PVCV).

• 식물병연구
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• 제7권2호
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• pp.80-85
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• 2001

이 연구는 고랭지 나리에서 발생하는 바이러스의 병징, 종류 및 계통별 방병률을 조사 분석하고 효과적인 검정방법을 개발하고자 수행하였다. 고랭지 나리에서 발생하는 바이러스의 병징은 모자이크, 축엽, 퇴록반점, 줄무의, 라인패턴을 나타내었으며, 증상별 분포는 모자이크가 43.8%, 축엽이 29.2%, 퇴록반점이 10.9%였다. 바이러스 종류별로는 Lily symptomless virus(LSV), Cucumber mosaic virus(CMV), Lily mottle virus(LMoV) 등 6가지 바이러스가 전자현미경으로 검정되었다. 지역별로는 강릉(왕산)이 대관령보다 바이러스 이병률이 높았으며, 계통별 바이러스 이병률은 오리엔탈 계통(카사블랑카, 마르코폴로)이 아시아틱 계통(솔레미오, 플라토)보다 2~4배 높았다. 바이러스 진단방법으로는 기존의 PT-PCR보다 개선된 one-step RT-PCR 검정이 시간을 줄이면서 민감도가 뛰어나 가장 효과적이었다.

• The Plant Pathology Journal
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• 제37권2호
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• pp.182-193
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• 2021

The transcription factor SHE1 was identified as an interacting partner with the cucumber mosaic virus (CMV) 1a protein in the yeast two-hybrid system, by a pull-down assay, and via bimolecular fluorescent complementation. Using fluorescent-tagged proteins and confocal microscopy, the CMV 1a protein itself was found distributed predominantly between the nucleus and the tonoplast membrane, although it was also found in speckles in the cytoplasm. The SHE1 protein was localized in the nucleus, but in the presence of the CMV 1a protein was partitioned between the nucleus and the tonoplast membrane. SHE1 expression was induced by infection of tobacco with four tested viruses: CMV, tobacco mosaic virus, potato virus X and potato virus Y. Transgenic tobacco expressing the CMV 1a protein showed constitutive expression of SHE1, indicating that the CMV 1a protein may be responsible for its induction. However, previously, such plants also were shown to have less resistance to local and systemic movement of tobacco mosaic virus (TMV) expressing the green fluorescent protein, suggesting that the CMV 1a protein may act to prevent the function of the SHE1 protein. SHE1 is a member of the AP2/ERF class of transcription factors and is conserved in sequence in several Nicotiana species, although two clades of SHE1 could be discerned, including both different Nicotiana species and cultivars of tobacco, varying by the presence of particular insertions or deletions.

• 식물병연구
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• 제10권4호
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• pp.231-240
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• 2004

2002년 노지 및 시설재배 고추를 대상으로 전국적인 규모의 바이러스병 발생실태를 조사하였다. 시설(155시료) 및 노지포장(227시료)에서 바이러스 감염주를 채집하여 전자현미경과 RT-PCR로 분석하였다. 시설 및 노지재배 고추에서 수집한 시료에서 TMV, RMV, PVY, AMV, TSWV에 감염된 것은 없었다. 그러나 CMV, BBWV, PepMoV, PMMoV, ToMV, TMGMV는 RT-PCR에 의해 검출되었다. 시설 및 노지재배 포장에서 바이러스 발병율은 상당히 다르게 나타났다. 시설재배에서는 10%의 발병율을 보였으나, 노지재배에서는 약 30%의 발병율을 나타냈다. 복합감염율은 시설 및 노지재배에서 각각 16%와 61%로 나타났다. 시설재배에서는 PMMoV가 우점하는 것으로 보아, 바이러스에 오염된 종자와 재배지에서의 바이러스 감염잔재물이 중요한 전염원이 된 것으로 보인다. 반대로 노지재배에서는 CMV와 BBWV가 우점하였다. 이것으로 보아 바이러스를 보독한 매개충의 이동이 가장 중요한 전염원으로 나타났다. 또한 이 연구에서 BBWV2는 우리나라에서 방제해야 할 새로운 바이러스로 대두되었다. 노지 및 시설재배에서 바이러스병의 발병율과 분포의 차이로 볼 때 연작에 따른 전염원의 축적 및 분포상과 재배지로의 바이러스 보독매개충의 이동이 바이러스 발생을 결정하는 중요한 요소로 보인다. 그러므로 식물병 역학과 고추의 새로운 육종 프로그램에 대한 진전된 연구가 바이러스 병을 줄이는데 필수적일 것이다.