title: Improved detection of grapevine leafroll-associated virus 1 by magnetic capture hybridisation RT-PCR on a conserved region of viral RNA.
abstract: We report the development of a sensitive diagnostic method for the detection of the grapevine leafroll-associated virus 1 (GLRaV-1). We have considered the current shortcoming in detection of GLRaV-1 to be linked to two factors, sequence variation in the viral RNA and low template concentration. Sequence information available allowed the selection of optimal target sequences for detection by RT-PCR, having high copy number and low levels of sequence variation. This was combined with the use of magnetic capture hybridisation to allow the removal of RT-PCR inhibitors and the addition of 100-fold excess template RNA to a single RT-PCR. The reproducibility of the technique was confirmed using field samples.
authors.affiliation: CSIRO Plant Industry, Adelaide, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Little
authors.forename: M A
authors.initials: MA
authors.lastname: Rezaian
mesh_terms: D029381:Closteroviridae / Q000235:genetics / Q000302:isolation & purification*; D008280:Magnetics; D016366:Open Reading Frames; D010935:Plant Diseases / Q000821:virology*; D016133:Polymerase Chain Reaction / Q000379:methods*; D012367:RNA, Viral / Q000235:genetics*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013698:Templates, Genetic; D027843:Vitis / Q000821:virology*
chemical_list: D012367:RNA, Viral