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    Banana die-back virus- a new virus infecting banana in Nigeria

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    Date
    1998
    Author
    Hughes, J.
    Speijer, P.
    Olatunde, O.
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Two viruses naturally infect Musa in Nigeria: banana streak badnavirus (BSV) and cucumber mosaic cucumovirus (CMV). During a recent field survey at Ibadan (Nigeria), some severely stunted banana plants (cv. Valery) were found that tested negative for CMV, banana bunchy-top virus, and BSV. The plants had symptoms of leaf crinkling, leaf necrosis, and cigar-leaf die-back. Subsequent suckers from the same mats were progressively more stunted. A 28- to 30-nm isometric virus was purified, and used for the production of antibodies, from the affected plants with (NH4)2SO4 to precipitate the virus. The antiserum (titer of 1:10,000) was used in enzyme-linked immunosorbent assay and immunosorbent electron microscopy to detect the virus. Mechanical inoculation with partially purified virus preparations resulted in stunting and development of pinpoint chlorotic lesions on Vigna unguiculata TVu-76 and symptomless systemic infection of Nicotiana occidentalis. The virus was not mechanically transmissible from N. occidentalis to banana. A serological relationship between this virus, banana die-back virus (BDBV), and tobacco ringspot, tomato ringspot, and cacao necrosis nepoviruses was found. The nematode species around the affected banana plants were isolated: Helicotylenchus multicinctus (Cobb) Golden was the dominant species, low numbers of H. dihystera (Cobb) Sher were present, but no virustransmitting nematodes were found in soil or banana roots. Further studies are needed to determine the mode of spread of BDBV, the implications for banana/plantain production in sub-Saharan Africa, and the safe international movement of germplasm.
    https://doi.org/10.1094/PDIS.1998.82.1.129C
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3962
    Digital Object Identifier (DOI)
    https://doi.org/10.1094/PDIS.1998.82.1.129C
    IITA Subjects
    Banana; Plant Diseases; Pests Of Plants; Plant Breeding; Disease Control; Livelihoods; Farm Management; Plant Production
    Agrovoc Terms
    Banana Streak Badnavirus; Cucumber Mosaic; Cucumovirus; Virus; Immunosorbent; Nematodes
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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