Plant viruses cause considerable economic losses and are a threat for sustainable
agriculture. The frequent emergence of new viral diseases is mainly due to international …

▪ Abstract Populations of plant viruses, like all other living beings, are genetically
heterogeneous, a property long recognized in plant virology. Only recently have the …

Citrus tristeza virus (CTV)(genus Closterovirus, family Closteroviridae) is the causal agent of
devastating epidemics that changed the course of the citrus industry. Adapted to replicate in …

Superinfection exclusion, a phenomenon in which a preexisting viral infection prevents a
secondary infection with the same or a closely related virus, has been described for various …

Amongst the Closteroviridae, Citrus tristeza virus (CTV) is almost unique in possessing a
number of distinct and characterized strains, isolates of which produce a wide range of …

The severe economic consequences of emerging plant viruses highlights the importance of
studies of plant virus evolution. One question of particular relevance is the extent to which …

RNA-RNA recombination is one of the strongest forces shaping the genomes of plant RNA
viruses. The detection of recombination is a challenging task that prompted the development …

Mixed viral infections occur more commonly than would be expected by chance in nature.
Virus-virus interactions may affect viral traits and leave a genetic signature in the population …

Tomato yellow leaf curl disease (TYLCD)-associated viruses present a highly structured
population in the western Mediterranean basin, depending on host, geographical region …

Genetic markers amplified from three noncontiguous regions by sequence specific primers
designed from the partial or complete genome sequences of Citrus tristeza virus (CTV) …