Browsing by Author "Ivey, M.L. Lewis"

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    Characterization of the Coffee Wilt Pathogen in Uganda
    (Phytopathology, 2003) Ivey, M.L. Lewis; Miller, S.A.; Hakiza, G.; Geiser, D.M.
    Sixteen isolates of Fusarium sp. were isolated from robusta coffee trees in Uganda with symptoms of vascular wilt and characterized based on morphology and partial DNA sequences of translation elongation factor 1-alpha (ef) and beta-tubulin (bena). Fusarium sp. isolates from robusta and arabica coffee trees in Zimbabwe, New Caledonia and Ethiopia were also characterized. Phylogenetic analyses indicated that these isolates represent a new species lineage in the African clade of the Gibberella fujikuroi species complex (GFC). The species most commonly associated with this disease, Fusarium xylarioides, is not a member of GFC, suggesting that recent outbreaks of vascular wilt in Uganda may have been caused by a new pathogen