文献类型： 外文期刊

作者： Gitton, F ¹ ; Diao, A ² ; Ducrot, O ² ; Antoniw, JF ² ; Adams, MJ ² ; Maraite, H ² ;

作者机构： 1.Univ Catholique Louvain, Fac Sci Agron, Unite Phytopathol, B-1348 Louvain, Belgium

2.Univ Catholique Louvain, Fac Sci Agron, Unite Phytopathol, B-1348 Louvain, Belgium; Zhejiang Acad Agr Sci, Dept Virol, Hangzhou 310021, Peoples R China; Serv Protect Vegetaux, F-45403 Fleury Les Aubrais, France; IACR Rothamsted, Crop & Dis Management Dept, Harpenden AL5 2JQ, Herts, England

关键词： multiplex RT-PCR;RNA nucleotide sequence;wheat mosaic viruses

期刊名称：PLANT PATHOLOGY （ 影响因子：2.59； 五年影响因子：2.924 ）

ISSN： 0032-0862

年卷期： 1999 年 48 卷 5 期

页码：

收录情况： SCI

摘要： A sequence of 942 nucleotides, located in the helicase gene of RNA1 of a French isolate of soil-borne wheat mosaic virus (SBWMV), is presented. This sequence was compared with the corresponding sequences published for Nebraskan and Chinese isolates and showed a 74.8% and 73.4% identity, respectively, with these isolates, whereas the Nebraskan and Chinese isolates shared a 78.2% identity. A set of primers specific to the French SBWMV isolate was designed on the basis of this sequenced 942 nucleotide fragment. A primer set for wheat spindle streak mosaic virus (WSSMV) was designed from the published partial sequence of a French isolate. Both sets of primers were combined into a two-step multiplex reverse-transcription polymerase chain reaction, allowing simultaneous detection of both viruses in leaves of infected wheat samples. The amplification specificity of the two sets of primers was checked against isolates of SBWMV from Oklahoma and China, Indian peanut clump virus strains H, L and D from India, barley mild mosaic virus and barley yellow mosaic virus from France. SBWMV primers were specific for French isolates of this virus, whereas the primers designed from the sequence of a French isolate of WSSMV could also faintly detect barley yellow mosaic virus in barley plants. The RT-PCR technique was also compared with ELISA (enzyme-linked immunosorbent assay) on 100 wheat leaf samples collected from the field on the basis of symptoms, and was shown to be reliable and reproducible.