• 제목/요약/키워드: Subgroup IA

검색결과 19건 처리시간 0.019초

과꽃에서 분리한 Cucumber mosaic virus의 성질 (Characterization of an Isolate of Cucumber mosaic virus Isolated from Chinese aster (Callistephus chinensis))

  • 오선미;김성률;홍진성;류기현;이긍표;최장경
    • 식물병연구
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    • 제14권3호
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    • pp.229-232
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    • 2008
  • 모자이크 증상의 과꽃(Callistephus chinensis L.)으로부터 Cucumber mosaic virus (CMV)의 한 계통(Cas-CMV)를 분리하고, Fny-CMV와 As-CMV를 대조로 기주반응, dsRNA, RT-PCR 및 RFLP분석을 통하여 바이러스를 동정하였다. Cas-CMV의 특징적인 기주반응의 차이는 박과 식물에서 발현되는 강한 병정이었으며, 특히 쥬키니호박에 접종하였을 때에는 접종 15-20일 후에 심한 모자이크 증상과 함께 어린 식물이 고사되는 괴저현상을 나타냈다. DsRNA분석과 RT-PCR실험의 결과는 Cas-CMV가 서브그룹 I의 CMV에 속하는 것으로 나타났으며, 더욱이 HindIII를 이용한 RFLP 분석은 Cas-CMV가 서브그룹 IA 구분되었다.

국내 패션프루트(Passiflora edulis)에서 분리한 Cucumber Mosaic Virus의 특성 (Characterization of Cucumber Mosaic Virus Isolated from Passion Fruit (Passiflora edulis) in Korea)

  • 김예영;박태선;박지수;민동주;신유섭;홍진성
    • 식물병연구
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    • 제30권1호
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    • pp.60-65
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    • 2024
  • 2020년 7월, 전라남도 해남에서 퇴록병반과 엽맥녹대 등 바이러스 병징이 보이는 패션프루트(Passiflora edulis) 잎으로부터 total RNA를 추출했으며, RT-PCR 검정과 염기서열 결정을 통해 CMV-HN2를 동정하였다. 패션프루트에 감염하는 CMV의 생물학적 특성을 확인하기 위해 10개 지표식물에 CMV-HN2를 접종한 결과, CMV-Fny와 비교하여 전형적인 CMV의 감염 패턴을 나타냈다. CMV 패션프루트 분리주들의 외피단백질에 대한 계통발생학적 분석한 결과, CMV의 패션프루트 분리주들은 subgroup I에 속하는 것으로 나타났으며, 그중 CMV-HN2는 subgroup IA에 속하는 것으로 나타났다. 또한 국내 패션프루트 CMV 분리주들 사이의 subgroup 차이가 확인되었다. 패션프루트 분리주 간의 외피단백질 아미노산 서열을 비교하였을때, CMV-HN2는 다른 분리주들과 특이적으로 4-8개 아미노산 차이가 존재하였다. 이 결과를 통해, 패션프루트 CMV 분리주들의 외피단백질에서 유전적 다양성이 있음을 확인하였다.

한반도 지열수의 지화학적 연구: 환경동위원소 및 수문화학적 특성 I. 부곡 지역 (Geochemistry of Geothermal Waters in Korea: Environmental Isotope and Hydrochemical Characteristics I. Bugok Area)

  • 윤성택;고용권;김천수;소칠섭
    • 자원환경지질
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    • 제31권3호
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    • pp.185-199
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    • 1998
  • 1995~1996년중 부곡 지열수 지역에서 채수한 유형별 자연수를 대상으로 수문지구화학 및 환경동위원소 연구를 수행하였다. 연구 지역에는 물리화학적으로 뚜렷히 구분되는 세 유형의 자연수, 즉 (1) 군접 I (지열수 지역의 중심부에서 산출되고 최대 $77^{\circ}C$의 용출 온도를 갖는 $Na-SO_4$ 유형), (2) 군집 II(외곽부에서 산출되며 다소 낮은 온도를 갖는 $Na-HCO_{3}-SO_{4}$ 유형) 및 (3) 군집 III(지표수나 천층 냉각 지하수로서 $Ca-HCO_3$ 유형)이 함께 산출된다. 군집 I은 Ia 및 Ib로 세분된다. 수문지구화학적 진화는 수 암 반응의 증가에 따라 군집 III$\rightarrow$II$\rightarrow$I의 순으로 진행되었다. 군집 II 및 III의 자연수는 비교적 낮은 수-암 반응, 특히 방해석 및 Na-사장석의 용해 반응에 의해 형성되었지만, 군집 I은 사장석, K 장석, 백운모, 녹려석, 황철석 등과의 높은 수-암 반응에 의해 형성되었다. 용존 황산염의 농도 및 황동위원소 조성은 지열수의 기원 및 전화를 해석하는데 중요한 정보가 된다. 용존 황산염은 퇴적 기원 황철석의 산화에 의해 생성되거나 (군집 Ib의 경우), 또는 열수의 상승 통로인 단열대에 존재하는 마그마 열수기원 황철석의 용해에 의해 생성되었다 (군집 Ia의 경우). 지열 저장지의 온도 규명을 위한 알칼리 이온 지옹계의 적용성은 화학조성을 변화시키는 요인들, 특히 마그네슘이 풍부한 지표수와의 혼합에 의해 제한된다. 그러나 다성분 광물/물 평형계에 대한 열역학적 계산 및 유체포유물 설험 결과, 심부 지열 저장지 (냉각중인 화성암체?)의 온도는 $125^{\circ}C$에 이르는 것으로 판단된다. 환경동위원소 (산소-수소, 삼중수소) 연구에 의하면, 자연수는 모두 상이한 충진 특성을 갖는 강우로부터 기원하였다. 특히 군집 Ia의 물은 심부 지열 저장지까지 심부 순환한 오래된 (40년 이상) 강우로부터 기원하였으며 지표부 물과의 혼합 정도도 낮다. 본 논문에서는 황산염이 풍부한 국내 지열수의 성인 및 진화에 관한 모델을 제시한다.

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Phylogenetic Analysis of New Isolates of Cucumber mosaic virus from Iran on the Basis of Different Genomic Regions

  • Nematollahi, Sevil;Sokhandan-Bashir, Nemat;Rakhshandehroo, Farshad;Zamanizadeh, Hamid Reza
    • The Plant Pathology Journal
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    • 제28권4호
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    • pp.381-389
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    • 2012
  • Molecular characterization of Cucumber mosaic virus (CMV) was done by using samples from tomato and cucurbitaceous plants collected from different locations in the northwest region of Iran. After screening by enzyme-linked immunosorbent assay, 91 CMV-infected samples were identified. Biological properties of eight representative isolates were compared with each other revealing two distinct phenotypes on squash and tomato plants. Phylogenetic analyses based on nucleotide sequences of the coat protein (CP), movement protein (MP) and 2b of the new isolates, together with that of previously reported isolates, led to the placement of the Iranian isolates in subgroups IA and IB according to CP and MP genes, but in subgroup IA according to the 2b gene. These data suggest that reassortment may have been a major event in the evolution of CMV in Iran, and that the Iranian isolates are derived from a common recent ancestor that had passed through a bottleneck event.

Characteristics of Cucumber mosaic virus isolated from Zea mays in Korea

  • Kim, Mi-Kyeong;Kwak, Hae-Ryun;Lee, Su-Heon;Kim, Jeong-Soo;Kim, Kook-Hyung;Cha, Byeong-Jin;Choi, Hong-Soo
    • The Plant Pathology Journal
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    • 제27권4호
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    • pp.372-377
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    • 2011
  • A virus causing mottle and stunt symptom on Zea mays was observed around Ulleng-do, Korea and identified as Cucumber mosaic virus (CMV-ZM) based upon biological, serological, and molecular characteristics. In host range studies, the CMV-ZM isolate produced local lesions on Datura stramonium, Vigna unguiculata, Cucurbita moschata, Chenopodium amaranticolor, Ch. quinoa, whereas this isolate produced systemic mosaic on Nicotiana tabacum cv. 'Xanthi-nc', Capsicum annuum, Solanum lycopersicum, Solanum melongena, Cucurbita pepo, and Z. mays. In addition, chlorotic local rings on inoculated leaves along with severe mosaic, malformation, and fern leaf symptoms on upper systemic leaves were shown in N. glutinosa plants. Complete nucleotide sequences of each genomic RNA segment was determined and compared to those of the other CMV strains. Comparison of the nucleotide sequence of 1a open reading frame (ORF) revealed approximately 89.2-92.4% sequence identity with each CMV subgroup IA and IB strain, while showing only 78% sequence identity with CMV subgroup II. Nucleotide sequence analysis of RNA2 ORFs revealed 85.3-97.6% sequence identity with subgroup I. In ORFs of RNA3, levels of nucleotide sequence identities were higher than 92-99.2% with CMV subgroup I and lower than 82% with CMV isolates of subgroup II. These results suggest that CMV-ZM isolate is more closely related to subgroup I than subgroup II and therefore, CMV-ZM isolate might be classified into as CMV subgroup I based on biological and molecular analysis.

Updated Trans-Ethnic Meta-Analysis of Associations between Inflammation-Related Genes and Intracranial Aneurysm

  • Eun Pyo Hong;Sung Min Cho;Jong Kook Rhim;Jeong Jin Park;Jun Hyong Ahn;Dong Hyuk Youn;Jong-Tae Kim;Chan Hum Park;Younghyurk Lee;Jin Pyeong Jeon;the First Korean Stroke Genetics Association Research (The FirstKSGAR) Study
    • Journal of Korean Neurosurgical Society
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    • 제66권5호
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    • pp.525-535
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    • 2023
  • Objective : We performed an expanded multi-ethnic meta-analysis to identify associations between inflammation-related loci with intracranial aneurysm (IA) susceptibility. This meta-analysis possesses increased statistical power as it is based on the most data ever evaluated. Methods : We searched and reviewed relevant literature through electronic search engines up to August 2022. Overall estimates were calculated under the fixed- or random-effect models using pooled odds ratio (OR) and 95% confidence intervals (CIs). Subgroup analyses were performed according to ethnicity. Results : Our meta-analysis enrolled 15 studies and involved 3070 patients and 5528 controls including European, Asian, Hispanic, and mixed ethnic populations. Of 17 inflammation-related variants, the rs1800796 locus (interleukin [IL]-6) showed the most significant genome-wide association with IA in East-Asian populations, including 1276 IA patients and 1322 controls (OR, 0.65; 95% CI, 0.56-0.75; p=3.24#x00D7;10-9) under a fixed-effect model. However, this association was not observed in the European population (OR, 1.09; 95% CI, 0.80-1.47; p=0.5929). Three other variants, rs16944 (IL-1β), rs2195940 (IL-12B), and rs1800629 (tumor necrosis factor-α) showed a statistically nominal association with IA in both the overall, as well as East-Asian populations (0.01<p<0.05). Conclusion : Our updated meta-analysis with increased statistical power highlights that rs1800796 which maps on the IL-6 gene is associated with IA, and in particular confers a protective effect against occurrence of IA in the East-Asian population.

Molecular and Biological Characterization of an Isolate of Cucumber mosaic virus from Glycine soja by Generating its Infectious Full-genome cDNA Clones

  • Phan, Mi Sa Vo;Seo, Jang-Kyun;Choi, Hong-Soo;Lee, Su-Heon;Kim, Kook-Hyung
    • The Plant Pathology Journal
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    • 제30권2호
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    • pp.159-167
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    • 2014
  • Molecular and biological characteristics of an isolate of Cucumber mosaic virus (CMV) from Glycine soja (wild soybean), named as CMV-209, was examined in this study. Comparison of nucleotide sequences and phylogenetic analyses of CMV-209 with the other CMV strains revealed that CMV-209 belonged to CMV subgroup I. However, CMV-209 showed some genetic distance from the CMV strains assigned to subgroup IA or subgroup IB. Infectious full-genome cDNA clones of CMV-209 were generated under the control of the Cauliflower mosaic virus 35S promoter. Infectivity of the CMV-209 clones was evaluated in Nicotiana benthamiana and various legume species. Our assays revealed that CMV-209 could systemically infect Glycine soja (wild soybean) and Pisum sativum (pea) as well as N. benthamiana, but not the other legume species.

Characterization of a Novel Cucumber mosaic virus Isolated from Petunia hybrida

  • Han, Kyung-Sook;Choi, Gug-Seoun;Chung, Bong-Nam;Cho, Jeom-Duk;Cho, In-Sook;Kim, Kee-Hong;Kim, Su;Yoon, Ju-Yeon;Choi, Seung-Kook
    • The Plant Pathology Journal
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    • 제28권3호
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    • pp.299-305
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    • 2012
  • Petunia hybrida is commonly used in landscapes and interiors for its attractive flower. Virus-like foliar symptoms, including a mosaic with dark green islands surrounding the veins and chlorosis on the leaf margins, were observed on a petunia plant from Icheon, Gyeonggido, Korea. Cucumber mosaic virus (CMV) was identified in the symptomatic petunia by serological testing for the presence of CMV coat protein (CP) with a direct antibody-sandwich-enzyme-linked immunosorbent assay. An agent was mechanically transmitted to indicator plant species including Chenopodium quinoa. Examination of the inoculated plant leaves by RT-PCR analysis and electron microscopy revealed the presence of specifically amplified CP products and spherical virions of approximately 28 nm in diameter, respectively, providing confirmation of a CMV infection. Analysis of CP sequences showed that CMV petunia isolate (CMVYJC) shared 82.5-100% amino acid sequence identity with CPs of representative CMV strains. Phylogenetic analysis of CPs supports that CMV-YJC is a member of CMV subgroup IA (CMV-IA) and has biological properties of CMV-IA on host species. To our knowledge, this is the first report of CMV from P. hybrida in Korea.

표주박(Lagenaria leucantha var. gourda)에서 분리한 서브그룹 IB계통의 Cucumber mosaic virus (A Subgroup IB Isolate of Cucumber mosaic virus Isolated from Lagenaria leucantha var. gourda)

  • 오선미;홍진성;류기현;이긍표;최장경
    • 식물병연구
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    • 제15권3호
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    • pp.254-258
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    • 2009
  • 전형적인 모자이크 증상의 표주박(Lagenaria leucantha var. gourda)으로부터 CMV를 분리하고 Lag-CMV로 명명하였다. 표주박에서 분리한 Lag-CMV는 N. benthamiana에서 전신감염되어 전형적인 모자이크 증상을 나타내 대조로 공시한 CMV들과 유사하였다. 그러나 N. tabacum. cv. Xanthi nc에서 접종엽에 퇴록반점이 형성되는 점이 As-CMV와 유사하였으며, 접종엽에 무병징을 나타낸 Fny-CMV와 구분되었다. 또한 Fny-CMV에 감염된 오이와 쥬키니 호박은 매우 심한 모자이크 증상을 나타낸 반면, Lag-CMV와 As-CMV에 감염된 식물은 비교적 엷은 모자이크 병징이 발현되었다. 고추에서는 Fny-CMV와 As-CMV가 접종상엽에 모자이크 증상이 발현되으나, Lag-CMV는 무병징으로 감염되었다. Lag-CMV에 감염된 N. benthamiana로부터 추출한 dsRNA의 전기영동 패턴은 대조의 Fny-CMV나 As-CMV의 dsRNA와 종류 및 분자 크기에서 차이를 나타내지 않았다. Lag-CMV에 감염된 N. benthamiana로부터 추출한 total RNA를 외피단백질 유전자와 IR 및 3' 비번역영역 일부를 포함하는 약 950 bp의 cDNA합성을 위한 프라이머를 이용하여 RT-PCR을 실시한 결과 약 950 bp의 cDNA가 검출되었다. 이 cDNA를 제한효소 EcoRI, HindIII, MspI, SalI 및 XhoI으로 처리한 후 RFLP분석을 실시한 결과, Lag-CMV의 RFLP패턴은 As-CMV와 일치하였다. 한편 이 cDNA를 이용하여 염기서열을 분석한 결과, 염기서열의 유사도는 As-CMV와 99.1%, Fny-CMV와는 94.5%였으며, 외피단백질의 아미노산서열 유사도는 As-CMV는 100%, Fny-CMV와 97.3%를 나타냈다. 이와 같은 결과들로부터 표주박에서 분리한 Lag-CMV는 As-CMV와 같은 서브그룹 IB에 속하는 것으로 확인되었다.

Symptom Determinant as RNA3 of Lily Isolates of Cucumber mosaic virus on Zucchini Squash

  • Cho, Seung-Kook;Ahn, Hong-Il;Kim, Min-Jea;Choi, Jang-Kyung;Ryu, Ki-Hyun
    • The Plant Pathology Journal
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    • 제20권3호
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    • pp.212-219
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    • 2004
  • Three isolates of Cucumber mosaic virus (CMV) from lily plants showing mosaic and distortion symptoms were detected by reverse-transcriptase polymerase chain reaction (RT-PCR) using primers specific to Cucumovirus genus namely, LK-CMV, LK4-CMV, and LKS-CMV. Restriction enzymes patterns of the RT-PCR products revealed that the lily isolates belonged to subgroup IA of CMV. In terms of biological properties, the lily isolates have highly similar but distinct pathogenicity as reported in other lily strains and ordinary strains of CMV. To characterize the molecular properties, cDNAs containing coat protein (CP) gene and 3' non-coding region (NCR) of RNA3 for the isolates were cloned and their nucleotide sequences were determined. The CP similarity (218 amino acids) was highly homologous (>97%) with that of subgroup I CMV strains. However, an additional 20-nulcleotide long segment was only present in 3' NCR of lily isolates, which form an additional stem-loop RNA structure. By using chimeric construct exchange cDNA containing 3'NCR of LK-CMV into the full-length cDNA clone of RNA3 of Fny-CMV, this additional segment may prove to be significant in the identification and fitness of the virus in lily plants. The pathology of zucchini squash infected by F1F2L3-CMV, a pseudorecombinant virus was showed to change drastically the severe mosaic and stunting symptom into a mild chlorotic spot on systemic leave, compared with Fny-CMV. To delimit the sequence of RNA3 affected the pathology, various RNA3 chimeras were constructed between two strains of CMV. The symptom determinants of F1F2L3-CMV were mapped to the positions amino acid 234, 239, and 250 in 3a movement protein (MP). RNA3 chimeras changed the sequences encoding three amino acids were resulted in alteration of systemic symptom.