1887

Abstract

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 transmitted efficiently. It is therefore concluded that the factor determining vector transmissibility is located on the RNA-2 genome segment of TRV. Because the serological properties of the isolates also correlate with transmissibility, it is likely that the virus particle protein is involved in the transmission process.

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1993-07-01
2021-10-17
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