文献类型: 外文期刊
作者: Nie, Xianzhou 1 ; Bai, Yanju 1 ; Molen, Teresa A. 1 ; Desjardins, David C. 1 ;
作者机构: 1.Agr & Agri Food Canada, Potato Res Ctr, Fredericton, NB E3B 4Z7, Canada
2.Heilongjiang Acad Agr Sci, Harbin, Heilongjiang, Peoples R China
关键词: potato carlaviruses;RT-PCR;universal degenerate primers
期刊名称:JOURNAL OF VIROLOGICAL METHODS ( 影响因子:2.014; 五年影响因子:2.001 )
ISSN: 0166-0934
年卷期: 2008 年 149 卷 2 期
页码:
收录情况: SCI
摘要: To facilitate efficient and accurate detection of potato-infecting carlaviruses, degenerated universal primers were designed based on conserved amino acid and nucleotide sequences. Two senseprimers, Car-F1 and Car-F2, were based on the amino acid sequences "SNNMA" and "GLGVPTE", respectively, in the coat protein. The reverse primer, Car-R, which was located at the border of the nucleic acid binding protein gene and the 3' untranslated region, and dT-B, which was derived from the oligo-dT targeting the poly(A) tail, were selected. Successful application of fragments within the predicted size range of carlaviruses was obtained using Car-F1 paired with either Car-R or dT-B from tested carlaviruses (Potato virus S, M and latent) by RT-PCR. The Car-F2 failed to yield clear-cut fragments within the predicted size range when paired with either Car-R or dT-B in RT-PCR. However, a less degenerated version of the primer, Car-F2b, resulted in amplicons within the predicted size range when paired with either Car-R or dT-B. Sequencing of the tentative carlavirus-fragments resulting from Car-F1/Car-R and Car-F2b/dT-B proved their carlavirus-origin, thus indicating the high specificity of these primers. The sensitivity of Car-F1/Car-R or Car-F2b/Car-R mediated RT-PCR for the detection of carlavirus-infected potato tubers were assessed using composite samples containing one carlavirus-infected-potato-tuber RNA sample with up to 49 virus-free-potato-tuber RNA samples under the optimal annealing temperature. The target carlaviruses were detected readily from all composites, demonstrating a high sensitivity. The method was further evaluated using presumed virus-free or carlavirus-infected potatoes of several cultivars, and reliable results were obtained. Crown Copyright (c) 2008 Published by Elsevier B.V. All rights reserved.
- 相关文献
作者其他论文 更多>>
-
Transcriptome analysis of the synergistic mechanisms between two strains of potato virus Y in Solanum tuberosum L.
作者:Xu, Liping;Zhang, Wei;Liu, Shangwu;Gao, Yanling;Huang, Yuanju;Bai, Yanju;Xu, Liping;Nie, Xianzhou;Xu, Liping
关键词:PVY; Potato; Physiological; Transcriptome; Cross-protection
-
Differential occurrence and strain composition of potato viruses between two major seed potato production zones in China suggest the need for different management strategies for the zones
作者:Gao, Yanling;Cheng, Shengqun;Lu, Wenhe;Gao, Yanling;Fan, Guoquan;Zhang, Wei;Shen, Yu;Zhang, Shu;Bai, Yanju;Qiu, Cailing;Nie, Xianzhou
关键词:China; occurrence; potato; strains; viruses; Chine; pomme de terre; souches; virus
-
Evolutionary history and global spatiotemporal pattern of alfalfa mosaic virus
作者:Gao, Yanling;Fan, Guoquan;Zhang, Wei;Bai, Yanju;Cheng, Shengqun
关键词:alfalfa mosaic virus; Bayesian phylodynamics; spatiotemporal transmission; geography-driven adaptation; positive selection; population dynamics
-
Potato Virus Y Strain N-Wi Offers Cross-Protection in Potato Against Strain NTN-NW by Superior Competition
作者:Xu, Liping;Meng, Fanjuan;Xu, Liping;Meng, Fanjuan;Zhang, Wei;Gao, Yanling;Bai, Yanju;Nie, Xianzhou
关键词:cross-protection; pathogenicity; PVY strains; virus accumulation
-
Geography-Driven Evolution of Potato Virus A Revealed by Genetic Diversity Analysis of the Complete Genome
作者:Zhang, Wei;Sun, Xuhong;Wei, Xuyan;Gao, Yanling;Song, Jiling;Bai, Yanju
关键词:potato virus A; genetic diversity; positive selection; phylogeny-trait association analysis; population structure
-
Potato Tuber Necrosis Induced by Alfalfa Mosaic Virus Depends on Potato Cultivar Rather Than on Virus Strain
作者:Nie, Xianzhou;Dickison, Virginia;De Koeyer, David;Singh, Mathuresh;Xu, Huimin;Bai, Yanju;Hawkins, Gary
关键词:alfalfa mosaic virus; potato tuber necrosis; cultivar response; phylogeny; virus haplotype
-
Potato Tuber Necrosis Induced by Alfalfa Mosaic Virus Depends on Potato Cultivar Rather Than on Virus Strain
作者:Nie, Xianzhou;Dickison, Virginia;De Koeyer, David;Singh, Mathuresh;Xu, Huimin;Bai, Yanju;Hawkins, Gary
关键词:alfalfa mosaic virus; potato tuber necrosis; cultivar response; phylogeny; virus haplotype