Infectivity of recombinant strawberry vein banding virus DNA.
Infectivity of the cloned DNA genome of strawberry vein banding virus (SVBV) was demonstrated by particle bombardment of 4-week-old strawberry (Fragaria vesca L. var. UC-5) plants with gold particles coated with the putative full-length 7.9 kb viral DNA. Vein banding symptoms developed on 15 % of inoculated plants 6-7 weeks post-inoculation. An approximate 1.25-mer of the viral DNA was cloned into the binary vector pCGN1547. Particle bombardment of this construct into strawberry plants gave an infection rate of 75 %. The construct was used for transformation of Agrobacterium tumefaciens, and infiltration of these cells into healthy strawberry leaves resulted in development of vein banding symptoms in 100 % of inoculated plants. Gel electrophoresis, Southern blot hybridization with an SVBV probe and sequence analyses of PCR-amplified DNA fragments were used to confirm SVBV infection in symptomatic plants.
Mahmoudpour
Ali
A
Department of Plant Pathology, University of California Davis, Davis, CA 95616, USA.
D016960:Agrobacterium tumefaciens / Q000235:genetics; D019470:Biolistics; D017796:Caulimovirus / Q000235:genetics* / Q000472:pathogenicity*; D004279:DNA, Viral / Q000235:genetics; D031985:Fragaria / Q000821:virology*; D005822:Genetic Vectors; D011995:Recombination, Genetic; D014170:Transformation, Genetic; D014774:Virulence / Q000235:genetics
D004279:DNA, Viral