D. Prufer et al., IN-VIVO EXPRESSION OF A FULL-LENGTH CDNA COPY OF POTATO LEAFROLL VIRUS (PLRV) IN PROTOPLASTS AND TRANSGENIC PLANTS, MGG. Molecular & general genetics, 253(5), 1997, pp. 609-614
A full-length cDNA copy (PLRV(fl)) of potato leafroll virus (PLRV) was
constructed and examined in vivo for its biological activities by tra
nsient expression experiments with plasmid DNA or in vitro transcribed
RNA. In addition, PLRV(fl) cDNA was stably introduced into the genome
of potato plants by Agrobacterium-mediated leaf disc transformation.
Both transient and stable expression of PLRV(fl) resulted in the synth
esis of genomic and subgenomic PLRV RNAs. Transgenic plants accumulate
d the 17-kDa movement protein and displayed the typical symptoms of PL
RV infection. This is the first example of the constitutive expression
of a phloem-limited virus in planta.