• 제목/요약/키워드: Citrus vein enation virus

검색결과 2건 처리시간 0.017초

국내 감귤류에 발생한Citrus vein enation virus 분포조사 (Incidence of Citrus vein enation virus in Citrus spp. and Poncirus trifoliata in Korea)

  • 김봉섭;양희지;이수현;고승현;박교남;최은진;이성진
    • 식물병연구
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    • 제25권4호
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    • pp.233-236
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    • 2019
  • 2017년, 감귤류에 Citrus vein enation virus (CVEV)의 발생보고가 있었다. 식물방역법상 관리급 병원체인 CVEV에 대한 검역조치를 위해 감귤의 주요 재배지인 제주도를 포함한 4개도 29개 시군에서 온주밀감, 유자, 만숙성 감귤류(한라봉, 천혜향, 레드향, 황금향) 재배과원 등 203개소에서 시료를 수집하고 reverse transcription polymerase chain reaction (RT-PCR) 방법과 시퀀싱을 통해 진단하였다. 진단결과, 양성반응을 보인 시료를 대상으로 외피단백질 유전자 부위를 분석하기 위해 GenBank에 등록된 분리주들과의 염기서열과 아미노산 서열을 비교한 결과, 98% 이상의 매우 높은 상동성을 확인하였다. 전체 시료에 대하여 RT-PCR 진단 결과, 136개 과원(67%)에서 CVEV가 검출되었으며, 유자 과원의 85.4%, 온주밀감 과원의 77.8%가 CVEV에 감염된 것으로 파악됐다. 또한, 감귤의 주요 재배지인 제주도에서 90.6%의 과원이 CVEV에 감염된 것으로 확인하였다. 기주별·지역별 발생실태 조사를 토대로 국내 감귤류에 CVEV가 만연되어 있음을 확인하였다. 본 연구를 바탕으로, CVEV의 발생실태 조사와 검역병원체 여부를 검토하여 2018년 5월 CVEV를 비검역 병원체로 변경하였다.

Occurrence and Multiplex PCR Detection of Citrus Yellow Vein Clearing Virus in Korea

  • Taemin Jin;Ji-Kwang Kim;Hee-Seong Byun;Hong-Soo Choi;Byeongjin Cha;Hae-Ryun Kwak;Mikyeong Kim
    • The Plant Pathology Journal
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    • 제40권2호
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    • pp.125-138
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    • 2024
  • Citrus yellow vein clearing virus (CYVCV) is a member of the Alphaflexiviridae family that causes yellow vein clearing symptoms on citrus leaves. A total of 118 leaf samples from nine regions of six provinces in Korea were collected from various citrus species in 2020 and 2021. Viral diagnosis using next-generation sequencing and reverse transcription polymerase chain reaction (RT-PCR) identified four viruses: citrus tristeza virus, citrus leaf blotch virus, citrus vein enation virus, and CYVCV. A CYVCV incidence of 9.3% was observed in six host plants, including calamansi, kumquat, Persian lime, and Eureka lemon. Among the citrus infected by CYVCV, only three samples showed a single infection; the other showed a mixed infection with other viruses. Eureka lemon and Persian lime exhibited yellow vein clearing, leaf distortion, and water-soak symptom underside of the leaves, while the other hosts showed only yellowing symptoms on the leaves. The complete genome sequences were obtained from five CYVCV isolates. Comparison of the isolates reported from the different geographical regions and hosts revealed the high sequence identity (95.2% to 98.8%). Phylogenetic analysis indicated that all the five isolates from Korea were clustered into same clade but were not distinctly apart from isolates from China, Pakistan, India, and Türkiye. To develop an efficient diagnosis system for the four viruses, a simultaneous detection method was constructed using multiplex RT-PCR. Sensitivity evaluation, simplex RT-PCR, and stability testing were conducted to verify the multiplex RT-PCR system developed in this study. This information will be useful for developing effective disease management strategies for citrus growers in Korea.