| xanthium strumarium: a weed host of components of begomovirus-betasatellite complexes affecting crops. | xanthium strumarium is a common weed that often shows symptoms typical of begomovirus infection, such as leaf curling and vein thickening. the virus complex isolated from the weed consisted of two begomoviruses along with a betasatellite and an alphasatellite. the first begomovirus was shown to be an isolate of cotton leaf curl burewala virus, a new recombinant begomovirus species that is associated with resistance breaking in previously resistant cotton varieties in pakistan, whereas the second ... | 2011 | 21969121 |