Arabidopsis thaliana is a host of the legume nanovirus Faba bean necrotic yellows virus.
We report infection of Arabidopsis thaliana with the legume nanovirus Faba bean necrotic yellows virus (FBNYV) by its insect vector Aphis craccivora. Symptoms of FBNYV infection on A. thaliana include stunting and reduced apical dominance, and are rather mild, compared to the severe necrosis and early plant death induced by the virus in the natural host Vicia faba. An inoculation access period of 6h is sufficient to transmit FBNYV to A. thaliana. FBNYV is readily transmitted back from A. thaliana to V. faba, where it induces the characteristic severe disease symptoms. Hence, passage through A. thaliana does not affect FBNYV pathogenicity. FBNYV accumulates to the highest levels in roots and stems, compared to cauline and rosette leaves. In cauline leaves, the kinetics of virus accumulation correlates with the amount of master Rep protein accumulation.
Vega-Arreguín
Julio C
JC
Institut des Sciences du Végétal, CNRS, Avenue de la Terrasse, Bât 23, Gif-sur-Yvette 91198, France. jvega@ira.cinvestav.mx
Gronenborn
Bruno
B
Ramírez
Bertha Cecilia
BC
D000818:Animals; D001042:Aphids / Q000821:virology; D017360:Arabidopsis / Q000821:virology*; D007303:Insect Vectors / Q000821:virology; D025682:Nanovirus / Q000302:isolation & purification / Q000472:pathogenicity* / Q000502:physiology*; D010935:Plant Diseases / Q000821:virology*; D018515:Plant Leaves / Q000821:virology; D018517:Plant Roots / Q000821:virology; D018547:Plant Stems / Q000821:virology; D031307:Vicia faba / Q000821:virology*; D014764:Viral Proteins / Q000378:metabolism
D014764:Viral Proteins