Nonregulated expression of TGBp3 of hordei-like viruses but not of potex-like viruses inhibits beet necrotic yellow vein virus cell-to-cell movement.
Plant viruses containing a Triple Gene Block (TGB) movement protein gene cassette fall into two classes. We have shown previously that the third TGB protein (TGBp3) of beet necrotic yellow vein virus (BNYVV; Class 1) and peanut clump virus (Class 1) inhibit BNYVV intercellular movement when expressed from a co-inoculated BNYVV RNA 3-based replicon. Here we show that autonomous expression of TGBp3's of four other Class 1 viruses of various genera also inhibits BNYVV movement. No such effect was observed for four Class 2 virus TGBp3's, suggesting that the roles of Class 1 and 2 TGBp3's in movement differ significantly.
Lauber
E
E
Institut de Biologie Moléculaire des Plantes du CNRS et de l'Université Louis Pasteur, Strasbourg, France.
Jonard
G
G
Richards
K
K
Guilley
H
H
D005814:Genes, Viral; D009068:Movement; D018515:Plant Leaves; D010942:Plant Viruses / Q000187:drug effects / Q000235:genetics / Q000502:physiology*; D012328:RNA Viruses / Q000235:genetics / Q000502:physiology*; D014764:Viral Proteins / Q000494:pharmacology*
D014764:Viral Proteins