Potyvirus is the largest genus of plant viruses causing significant losses in a wide range of
crops. Potyviruses are aphid transmitted in a nonpersistent manner and some of them are …

RNA interference (RNAi) is an important defence against viruses and transposable elements
(TEs). RNAi not only protects against viruses by degrading viral RNA, but hosts and viruses …

The malaria parasite Plasmodium falciparum has a great capacity for evolutionary
adaptation to evade host immunity and develop drug resistance. Current understanding of …

Over 30 viruses infecting sweetpotato, assigned to 9 families, have been identified (Table 1):
Bromoviridae (1 virus), Bunyaviridae (1), Caulimoviridae (3), Closteroviridae (1) …

Plant viruses are biotrophic pathogens that need living tissue for their multiplication and
thus, in the infection–defence equilibrium, they do not normally cause plant death. In some …

Potyviruses (family Potyviridae, genus Potyvirus) are the result of an initial radiation event
that occurred 6,600 years ago. The genus currently consists of 167 species that infect …

Taxonomic relationships P lum pox virus (PPV) is a member of the genus P otyvirus in the
family P otyviridae. PPV diversity is structured into at least eight monophyletic strains …

Cassava brown streak disease (CBSD) has emerged as the most important viral disease of
cassava (Manihot esculenta) in Africa and is a major threat to food security. CBSD is caused …

Cassava brown streak virus (CBSV) isolates were analysed from symptomatic cassava
collected between 1997 and 2008 in the major cultivation regions of East Africa. An analysis …

RNA silencing is an evolutionarily conserved sequence-specific gene-inactivation system
that also functions as an antiviral mechanism in higher plants and insects. To overcome …