Publications

distinct cavemoviruses interact synergistically with sweet potato chlorotic stunt virus (genus crinivirus) in cultivated sweet potato.	two serologically unrelated sweet potato viruses causing symptoms of vein clearing in the indicator plant ipomoea setosa were isolated and their genomes have been sequenced. they are associated with symptomless infections in sweet potato but distinct vein-clearing symptoms and higher virus titres were observed when these viruses co-infected with sweet potato chlorotic stunt virus (spcsv), a virus that is distributed worldwide and is a mediator of severe virus diseases in this crop. molecular cha ...	2011	21307225
development of transgenic sweet potato with multiple virus resistance in south africa (sa).	multiple infections of sweet potato feathery mottle virus (spfmv), sweet potato chlorotic stunt virus (spcsv), sweet potato virus g (spvg) and sweet potato mild mottle virus (spmmv) cause a devastating synergistic disease complex of sweet potato (ipomoea batatas lam.) in kwazulu-natal, south africa. in order to address the problem of multiple virus infections and synergism, this study aimed to develop transgenic sweet potato (cv. blesbok) plants with broad virus resistance. coat protein gene seg ...	2014	24158330
the ability of cultivars of sweetpotato in east africa to 'revert' from sweet potato feathery mottle virus infection.	asymptomatic field plants are the normal source of the vine cuttings used as sweetpotato planting material in africa. previous and new tests of such east african material, mostly using the very sensitive method of graft inoculation to the indicator plant ipomoea setosa, showed that a majority tested virus-negative. this was despite their never having undergone any science-based therapy. to investigate how this occurs, in a replicated greenhouse experiment, plants of susceptible cultivars from th ...	2014	24361352
synergistic interactions of begomoviruses with sweet potato chlorotic stunt virus (genus crinivirus) in sweet potato (ipomoea batatas l.).	three hundred and ninety-four sweet potato accessions from latin america and east africa were screened by polymerase chain reaction (pcr) for the presence of begomoviruses, and 46 were found to be positive. all were symptomless in sweet potato and generated leaf curling and/or chlorosis in ipomoea setosa. the five most divergent isolates, based on complete genome sequences, were used to study interactions with sweet potato chlorotic stunt virus (spcsv), known to cause synergistic diseases with o ...	2015	25187172