• 식물병연구
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• 제18권4호
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• pp.277-289
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• 2012

농업인 등 농업현장에서 임상진단을 요청한 시료 수는 2007년부터 5년간 총 2,992건이었으며, 바이러스를 검정한 샘플 수는 13,325개이었다. 연도별 검출된 바이러스 종류는 2007년 21종, 2008년 15종, 2009년 23종, 2010년 21종, 2011년 17종이었다. 5년 동안에 우리나라에서 처음 검정된 바이러스는 2007년에는 TbLCV, 2008년에는 TYLCV, 2009년에는 INSV, RaMV, 2010년에는 BWYV이었다. 2007년부터 5년간 총 발생한 바이러스 종류는 알파파모자이크바이러스(Alfalfa mosaic virus, AMV) 등 총 40종이었다. 임상진단 요청 시료에서 가장 감염율이 높은 상위 10종의 바이러스는 CMV, TSWV, TYLCV, CGMMV, BBWV2, ZYMV, MNSV, PMMoV, WMV, PepMoV이었다. 농업현장에서 임상진단 요청한 작물의 종류는 총 53종이었으며, 상위 10위의 작물 종류는 고추, 토마토, 파프리카, 수박, 멜론, 벼, 오이, 옥수수, 무, 박이었으며, 상위 10개 작물과 20개 작물의 전체 임상진단 요청률은 각각 81.6%와 94.2%이었다. 고추에 감염된 바이러스는 BBWV2 등 8종이었으며, 검정한 샘플 가운데 바이러스가 검출된 비율은 CMV 24.6%, PMMoV 18.9%, TSWV 14.7%이었다. 2종 바이러스 복합감염 형태는 평균 감염률 14.7%의 BBWV2+CMV 등 7가지, 3종 바이러스 복합감염 형태는 평균 감염률 0.9%의 BBWV2+CMV+PepMoV 등 4가지이었다. 토마토에서 검출된 바이러스 종류는 CMV 등 6종이었으며 검정한 샘플 중 바이러스가 검출된 비율은 TYLCV 50.6%, TSWV 14.5%, TbLCV 10.9%이었다. 복합감염형태와 감염률은 CMV+TSWV 3.9%, ToMV+TYLCV 0.4%이었다. 수박에 감염된 바이러스는 CMV 등 5종이었으며 평균 검출 비율은 MNSV 37.0%, CGMMV 20.4%, ZYMV 18.1%, WMV 17.8%이었다. 수박 바이러스의 복합감염 형태와 검출비율은 CMV+MNSV 0.7%, WMV+ZYMV 5.0%이었다. 멜론에서 검출된 감염된 바이러스는 CMV 등 3종이었고 평균 검출비율은 MNSV 77.6%, CMV 5.6%, WMV 3.3%이었다. 복합감염은 CMV+ MNSV로 평균 검출비율은 13.5%이었다.

• The Plant Pathology Journal
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• 제37권6호
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• pp.619-631
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• 2021

Alfalfa mosaic virus (AMV), an economically important pathogen, is present worldwide with a very wide host range. This work reports for the first time the infection of Vinca minor and Wisteria sinensis with AMV using RNA sequencing and reverse transcription polymerase chain reaction confirmation. De novo assembly and annotating of contigs revealed that RNA1, RNA2, and RNA3 genomic fragments consist of 3,690, 2,636, and 2,057 nucleotides (nt) for IR-VM and 3,690, 2,594, and 2,057 nt for IR-WS. RNA1 and RNA3 segments of IR-VM and IR-WS closely resembled those of the Chinese isolate HZ, with 99.23-99.26% and 98.04-98.09% nt identity, respectively. Their RNA2 resembled that of Canadian isolate CaM and American isolate OH-2-2017, with 97.96-98.07% nt identity. The P2 gene revealed more nucleotide diversity compared with other genes. Genes in the AMV genome were under dominant negative selection during evolution, and the P1 and coat protein (CP) proteins were subject to the strongest and weakest purifying selection, respectively. In the population genetic analysis based on the CP gene sequences, all 107 AMV isolates fell into two main clades (A, B) and isolates of clade A were further divided into three groups with significant subpopulation differentiation. The results indicated moderate genetic variation within and no clear geographic or genetic structure between the studied populations, implying moderate gene flow can play an important role in differentiation and distribution of genetic diversity among populations. Several factors have shaped the genetic structure and diversity of AMV: selection, recombination/reassortment, gene flow, and random processes such as founder effects.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2000년도 추계 학술발표회
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• pp.67.2-67
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• 2000

• The Plant Pathology Journal
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• 제16권5호
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• pp.269-279
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• 2000

Alfalfa mosaic alfamoviruses(AIMV) were isolated from infected potato (Solanum tuberosum) and azuki bean (Paseolus angularis) in Korea. Two AIMV isolated from potatoes were named as strain KR (AIMV-KR1 and KR2) and AIMV isolated from azuki bean was named as strain Az (AIMV-Az). Each isolated AIMV strain was characterized by using their host ranges, symptom developments, serological relations and nucleotide sequence analysis of coat protein (CP) gene. Strains KR1, KR2, and Az were readily transmitted to 20 of 22 inoculated plant species including bean, cowpea, tomato, tobacco, and potato. AIMV-KR1 and KR2 produced the typical symptoms like chlorotic or necrotic spots in Chenopodium quinoa and Solanum tuberosum cv. Superior. AIMV-Az caused bright yellow mosaic symptom and leaf malformation in Nicotiana glauca, which were different from the common mosaic symptom caused by AIMV-KR1 and KR2. Electron microscope observation of purified virus showed bacilliform virions containing a single-stranded plus-strand RNAs of 3.6, 2.6, 2.0 and 0.9 kbp in length, respectively, similar in size and appearance to those of Alfamovirus. In SDS-PAGE, the coat protein of the two viruses formed a consistent band that estimated to be about 24kDa. The CP genes of the AIMV strains, KR1, KR2, and Az have been amplified by RT-PCR using the specific primers designed to amplify CP gene from viral RNA-3, cloned and sequenced. Computer aided analysis of the amplified cDNA fragment sequence revealed the presence of a single open reading frame capable of encoding 221 amino acids. The nucleotide and peptide sequence of viral CP gene showed that strain KR1, KR2, and Az shared highest nucleotide sequence identities with AIMV strain 425-M at 97.7%, 98.2%, and 97.2%, respectively. CP gene sequences of two strains were almost identical compared with each other. Altogether, physical, serological, biological and molecular properties of the purified virus.