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 ear...

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Bibliographic Details
Published in:Virus research 2007-09, Vol.128 (1), p.81-87
Main Authors: Vega-Arreguín, Julio C., Gronenborn, Bruno, Ramírez, Bertha Cecilia
Format: Article
Language:English
Subjects:
A. craccivora
Animals
Aphids - virology
Aphis craccivora
Arabidopsis - virology
Arabidopsis thaliana
Faba bean necrotic yellows virus
FBNYV-induced symptoms
FBNYV-infected A. thaliana
Insect Vectors - virology
Life Sciences
Nanovirus - isolation & purification
Nanovirus - pathogenicity
Nanovirus - physiology
Plant Diseases - virology
Plant Leaves - virology
Plant Roots - virology
Plant Stems - virology
Vegetal Biology
Vicia faba
Vicia faba - virology
Viral Proteins - metabolism
Virus transmission
Virus–host interaction
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Summary: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 6 h 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.
ISSN:0168-1702
1872-7492
DOI:10.1016/j.virusres.2007.04.011