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    Variants of East African cassava mosaic virus and its distribution in double infections with African cassava mosaic virus in Nigeria

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    S03ArtOgbeVariantsInthomDev.pdf (527.7Kb)
    Date
    2003-03
    Author
    Ogbe, F.O.
    Thottappilly, G.
    Dixon, Alfred G.O.
    Atiri, G.I.
    Mignouna, H.D.
    Type
    Journal Article
    Journal Article
    Metadata
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    Abstract/Description
    In a survey for cassava mosaic begomoviruses conducted in 1997 and 1998 in Nigeria, East African cassava mosaic virus (EACMV) was detected by the polymerase chain reaction together with African cassava mosaic virus (ACMV) in 27 out of 290 cassava leaf samples of infected plants from 254 farmers' fields in five agroecological zones. One plant was infected with EACMV only. Five variant isolates of EACMV were observed based on their reactions to primers that could detect Cameroonian and East African strains of EACMV. Isolates of variants 1 and 3 occurred mostly in the derived or coastal and southern Guinea savannahs, while variants 4 and 5 predominated in the humid forest region. Isolates of variant 2 were widely distributed across the three agroecologies. EACMV was not detected in the northern Guinea savannah and arid and semiarid zones. Most doubly infected plants showed more severe symptoms than plants with single infection. Occurrence of EACMV variants together with ACMV detection and information about their distribution in Nigeria could be used for the selection of cassava clones in cassava mosaic disease resistance programs.
    https://doi.org/10.1094/PDIS.2003.87.3.229
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/4173
    Digital Object Identifier (DOI)
    https://doi.org/10.1094/PDIS.2003.87.3.229
    IITA Subjects
    Cassava; Plant Diseases
    Agrovoc Terms
    Cassava; African Cassava Mosaic Virus; Begomovirus; Plant Diseases
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Collections
    • Journal and Journal Articles4835
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