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    The occurrence of African cassava mosaic virus and East African cassava mosaic Cameroon virus in natural hosts other than cassava in Nigeria

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    alabi-occurrence-abst-2007.pdf (166.6Kb)
    Date
    2007
    Author
    Alabi, O.J.
    Ogbe, F.O.
    Bandyopadhyay, Ranajit
    Dixon, Alfred G.O.
    Hughes, J.
    Naidu, R.A.
    Type
    Journal Article
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    Abstract/Description
    Cassava mosaic disease (CMD) in Africa is caused by six distinct cassava mosaic viruses (family eminiviridae, genus Begomovirus). Among them, African cassava mosaic virus (ACMV) and East African cassava mosaicCameroon virus (EACMCV) have been reported in CMD-infected cassava plants in Nigeria. Based on PCR tests using virus-specific primers, a leguminous plant Senna occidentalis and the weed Combreturn confertumwere previously identified as natural hosts for ACMV and EACMCV and castor oil plant Ricinus cornmunis as a host for ACMV. In a recent study, we identified a second leguminous plant Leucana leucocephala as a host for ACMV and EACMCV. In order to confirm the PCR results, we have amplified 1 kbp DNA fragments specific to ACI and AV2 open reading frames (OW) of ACMV and AC3 and ACI ORFs of EACMCV. The amplicons were cloned and nucleotide sequences compared with corresponding sequences of ACMV and EACMCV isolates from cassava. All ACMV isolates from the four natural hosts showed sequence identity between 95 and 96 percent with cassava isolates. Similarly, all EACMCV isolates from the three natural hosts showed nucleotide sequence identity above 98 percent with isolates from cassava. The results confirm the natural occurrence of ACMV and EACMCV in four plant species other than cassava and indicate that theymay play a role in the epidemiology of CMD in Nigeria.
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3476
    IITA Subjects
    Disease Control; Pests Of Plants; Cassava; Plant Breeding; Plant Diseases; Plant Genetic Resources; Plant Health; Plant Production
    Agrovoc Terms
    African Cassava Mosaic Virus; African Cassava Mosaic Virus; East African Cassava Mosaic Cameroon Virus; Nucleotide Sequence; Cassava
    Regions
    Asia; Acp; Africa; East Asia; North America; West Africa
    Countries
    Taiwan; United States; Nigeria
    Collections
    • Journal and Journal Articles4835

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      Alternate hosts of African cassava mosaic virus and East African cassava mosaic Cameroon virus in Nigeria 

      Alabi, O.J.; Ogbe, F.O.; Bandyopadhyay, Ranajit; Kumar, P.L.; Dixon, Alfred G.O.; Hughes, Jacqueline d'Arros; Naidu, R.A. (2008)
      Cassava mosaic disease (CMD) caused by African cassava mosaic virus (ACMV) and East African cassava mosaic Cameroon virus (EACMCV) is the major constraint to cassava production in Nigeria. Sequences of the DNA-A component of ACMV and EACMCV isolates from leguminous plant species (Senna occidentalis, Leucana leucocephala and Glycine max), castor oil plant (Ricinus communis), a weed host (Combretum confertum) and a wild species of cassava (Manihot glaziovii) were determined. All ACMV isolates from ...
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      Multiplex PCR for the detection of African cassava mosaic virus and East African cassava mosaic Cameroon virus in cassava 

      Alabi, O.J.; Kumar, P.L.; Naidu, R.A. (2008)
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      Mgbechi-Ezeri, J.U.; Alabi, O.J.; Naidu, R.A.; Kumar, P.L. (2008)
      African cassava mosaic virus (ACMV; genus Begomovirus, family Geminiviridae) is one of six viruses documented in cassava (Manihot esculenta Crantz.) plants showing cassava mosaic disease in sub-Saharan Africa (SSA). In addition to cassava, the natural host range of ACMV includes a few wild Manihot species, Jatropha multifida, and Ricinus communis L. in Euphorbiaceae, and Hewittia sublobata in Convolvulaceae. The experimental host range of ACMV includes Nicotiana sp. and Datura sp. in the Solanaceae ...
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