• BMB Reports
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• 제40권3호
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• pp.404-411
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• 2007

Transformation of cantaloupes with the coat protein (cp) gene of papaya ringspot virus type W (PRSV-W), Thai isolate, was used to introduce virus resistance. Binary vectors containing either the full length coat protein coding region under control of the 35S CaMV promoter(pSA1175), or the inverted-repeat of a coat protein coding region (pSA1304), were constructed and used for Agrobacteriummediated transformation of cotyledonary explants of the cantaloupe cultivar Sun Lady. Four independent transgenic lines were obtained using pSA1304 and one using pSA1175. Integration of the PRSV-W cp gene into the genome of these transgenic lines was verified by PCR amplification, GUS assays and Southern blot hybridization. In vitro inoculation of these lines with PRSV-W revealed that whereas the line containing pSA1175 remained sensitive, the four lines containing pSA1304 were resistant. The presence of small RNA species, presumably siRNA, corresponding to regions of the viral cp gene in transgenic lines resistant to PRSV-W supports the involvement of post-transcriptional gene silencing in the establishment of resistance.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.141.2-142
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• 2003

A flexuous rod-shaped virus was isolated from Cucurbita pepo leaves showing green mosaic and puckering symptoms at Anseong, Korea. Based on the biological tests, electron microscopy, and reverse transcription-polymerase chain reaction (RT-PCR), the isolate was identified as Papaya ringspot virus type Watermelon (PRSV-W). In the biological test, host range of PRSV-W was limited in the families Cucurbitaceae and Chenopodiaceae. Most susceptible cucurbit species, such as Cucurmis lanatus, Cucurmis sativus, Cucurbita pepo, and Citrullus lanatus, responded to mechanical inoculation by PRSV-W that induce green mosaic, malformation, puckering, and narrow laminae. The local lesion symptoms were produced on the inoculated leaves of Chenopodium maranticolor and C. quinoa PRSV specific primers which amplifies the part of the coat protein (CP) genes, generated a 648 bp product from 6 isolates of PRSV-W, but no amplification had been detected in other viruses including CMV, CGMMV, KGMMV, ZYMV and WMV. In electron microscopy, PRSV particles were flexuous, approximately 780 nm in length and 12 nm in width. PRSV-W is one of the worldwide viruses which has the great economic importance in cucumber, melon, squash, watermelon, and other cultivated cucurbits with ZYMV and WMV. This is the first report of PRSV-W on cucurbits in Korea.

• 농약과학회지
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• 제13권4호
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• pp.298-308
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• 2009

안성에서 모자이크와 주름증상을 보이는 호박으로부터 사상형 바이러스가 분리되었으며, 생물학적 특성과 전자현미경 검정, RT-PCR 검정에 의해 파파야원형반점바이러스(Papaya ringspot virus) 수박계통(PRSV-W)으로 동정되었다. PRSV-W의 기주범위는 박과작물과 명아주과작물에 한정되었고 감수성 기주인 오이, 호박, 수박 등에는 녹색모자이크, 기형, 주름 등의 증상을 나타냈지만 명아주과의 기주에는 국부병징만을 나타냈다. 2001년에서 2003년에 걸쳐, 경기, 경북, 전남에서 다양한 작형의 박과작물이 재배되는 173지역에서 박과작물의 주요 바이러스인 PRSV, 수박모자이크바이러스(WMV), 쥬키니황화모자이크바이러스(ZYMV)와 오이모자이크바이러스(CMV) 등 4종 바이러스의 발생상황을 조사하였다. 173지역 중 107지역에서 수집한 시료로부터 바이러스 병징이 관찰되었으며 RT-PCR 검정 결과, 235점의 시료 중 206시료에서 3종의 바이러스가 검출되었다. 검출빈도는 WMV가 48%, ZYMV가 33%였으며, PRSV는 12%였다. 8종 PRSV 시료의 핵산과 외피단백질 아미노산을 분석하였다. 분석된 결과를 전세계의 다른 PRSV 계통과 유사도를 비교한 결과, 핵산은 88.6~97.3%, 아미노산은 95.1~99.3%로 조사되었다. 이들 분리주의 유연관계를 분석한 결과, PRSV-W는 남동 아시아 계통과 근연종으로 판명되었다.