background and aims: virus-induced gene silencing (vigs) is a virus vector technology that exploits antiviral defense mechanism. by infecting plants with recombinant viruses containing host genes inserted in the viral genome, vigs achieves the rna silencing process. the purpose of this study was to investigate the possibility of tomato (lycopersicon esculentum mill.) and tobacco (nicotiana bent...

Background and Aims: Virus-Induced Gene Silencing (VIGS) is a virus vector technology that exploits antiviral defense mechanism. By infecting plants with recombinant viruses containing host genes inserted in the viral genome, VIGS achieves the RNA silencing process. The purpose of this study was to investigate the possibility of tomato (Lycopersicon esculentum Mill.) and tobacco (Nicotiana be...

Pseudorecombinant isolates produced from an efficiently transmitted and a non-transmitted isolate of tobacco rattle tobravirus were tested for their transmissibility by trichodorid vector nematodes. Isolates with RNA-2 originating from the non-transmissible isolate were not transmitted by the vector, whereas isolates with RNA-2 originating from the efficiently transmitted isolate were transmitt...

Virus-induced gene silencing (VIGS) is a plant RNA-silencing technique that uses viral vectors carrying a fragment of a gene of interest to generate double-stranded RNA, which initiates the silencing of the target gene. Several viral vectors have been developed for VIGS and they have been successfully used in reverse genetics studies of a variety of processes occurring in plants. This approach ...

Sequence analysis of RNA 2 of four Tobacco rattle virus (TRV) isolates collected from potato fields in Oregon (OR2, Umt1), Washington (BM), and Colorado (Cot2) revealed significant homologies to the ORY isolate from North America. Phylogenetic analysis based on a comparison of nucleotide (nt) and amino acid (aa) sequences with other members of the genus Tobravirus indicates that the North Ameri...

Tobacco rattle virus (TRV), member of the genus Tobravirus, is an important plant pathogen with a wide host range beyond any known viruses. It able to be transmitted by nematodes genera Trichodorus and Paratrichodorus (Trichodoridae). In this paper, rapid screening method was established for inspection TRV in seeds or other materials, combining microfluidic chip tech...

The rate of inactivation of tobacco rattle virus RNA by o.z M-nitrous acid at pH 4"o was comparable to that of tobacco mosaic virus RNA. In o'o025 M-nitrous acid at pH 6.0 this rate was greatly diminished, and was slower than that of intact virus. Possible reasons for this are discussed. Methods are described for the induction of mutants of tobacco rattle virus by nitrous acid, and for the sele...