Abstract Background Some Nicotiana species are widely used as experimental hosts for
plant viruses. Nicotiana species differ in ploidy levels, chromosome numbers and have …

Geminiviruses form the second largest family of plant viruses, the Geminiviridae,
represented by four genera: Mastrevirus, Curtovirus, Topocuvirus and Begomovirus. During …

Genetic recombination in positive-strand RNA viruses is a significant evolutionary
mechanism that drives the creation of viral diversity by the formation of novel chimaeric …

ABSTRACT Orthobunyaviruses are arboviruses (Arthropod Borne Virus) and possess
multipartite genomes made up of three negative RNAs corresponding to the small (S) …

The genus Begomovirus (family Geminiviridae) is the largest genus in the entire virosphere,
with more than 400 species recognized. Begomoviruses are single-stranded DNA plant …

Begomoviruses impose serious constraints on agriculture throughout the temperate, tropical
and subtropical regions. Previously, we characterised a sida golden yellow vein virus …

Background Viruses of the genus Begomovirus (Geminiviridae) are emerging economically
important plant viruses with a circular, single-stranded DNA genome. Previous studies have …

Parallel molecular evolution is the independent evolution of the same genotype or
phenotype from distinct ancestors. The simple genomes and rapid evolution of many viruses …

The extent to which viruses and their hosts codiverge remains an open question, given that
numerous cases of both “cospeciation” and horizontal switching have recently been …

Viral diseases occur wherever sweet potato (Ipomoea batatas) is cultivated and because
this crop is vegetatively propagated, accumulation and perpetuation of viruses can become …