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 Printable version |
The Luteoviridae : biological properties and evolution |
Virologie. Volume 5, Number 1, 9-21, Janvier - Février 2001, Revues
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 Résumé
Article gratuit
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Author(s) : V. Brault, E. Herrbach, S. Hauser, O. Lemaire |
Summary : Plant viruses belonging to the Luteoviridae family are widely spread throughout the world and induce significant losses in major crops. Their icosahedrical particles contain a single stranded genomic RNA encoding 5 to 6 open reading frames (ORF). These ORFs are expressed from genomic and subgenomic RNAs by various translational strategies. These viruses are strictly limited to phloem tissue and have variable host ranges. Yellowing or reddening symptoms are often observed on plants infected by luteovirids. These viruses are strictly and specifically transmitted by an aphid vector in a persistant and circulative manner. Serological and molecular techniques are used to detect these viruses in plants and in vectors. The spread of luteovirids depends primarily on aphid population dynamics and the main strategy to control these viruses relies on the use of insecticide treatments. Non-conventional techniques using transgenic plants are also developed. Phylogenetic studies reveal that luteovirids have evolved from ancestors mostly by recombination events. |
Keywords : Luteoviridae |
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