Caracterisation d'une nouvelle souche du virus du flétrissement de la fève isolée de l'artichaut en France

A virus isolated from artichoke "Camus de Bretagne" in France has been characterized biologically, physicochemically, serologically and cytopathologically. It was identified as a new strain of broad bean wilt virus-French artichoke (BBWV-FA) on the following basis: differential host reaction on Chenopodium amaranticolor; physico-chemical properties in good agreement with those of other strains of BBWV; a serological differentiation index of 2-3 between BBWV-FA and another isolate of BBWV from Italian artichoke "Castellammare" (BBWV-IA); a relationship between BBWV-FA and BBWV serotypes I and II; a very slight relationship between BBWV-FA and Lamium mild mosaic virus; ultrastructural aspects of the viroplasms, which contain granular tubules about 70 nm in diameter.