African Crop Science Journal (2001) 9, 293-299

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R.F. Karyeija, J.F. Kreuze, R.W. Gibson and J.P.T. Valkonen (2001)
Variability of sweetpotato feathery mottle virus in Africa
African Crop Science Journal 9 (1), 293-299
Abstract: One sweetpotato breeding line resistant to sweetpotato feathery mottle virus (SPFMV) was infected by graft-inoculation with SPFMV and developed severe symptoms of sweetpotato virus disease, following co-inoculation with sweetpotato chlorotic stunt virus. Coat protein (CP) gene sequences from eight East African isolates of SPFMV and two West Africa isolates from Nigeria and Niger were determined. Phylogenetic analysis of sequences of these isolates and those of non-East African origin previously reported, showed that the East African SPFMV isolates form a separate cluster. The monoclonal antibody MAb 7H8 divided Uganda SPFMV isolates into serogroups, which differed in prevalence in different districts of Uganda and in two common sweetpotato cultivars.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Jari P.T. Valkonen, Jan F. Kreuze

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Sweet potato feathery mottle virus Sweet potato (Ipomoea batatas) Niger
Sweet potato feathery mottle virus Sweet potato (Ipomoea batatas) Nigeria
Sweet potato feathery mottle virus Sweet potato (Ipomoea batatas) Uganda
Sweet potato chlorotic stunt virus Sweet potato (Ipomoea batatas)