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    Risk assessment of gene flow from genetically engineered virus resistant cassava to wild relatives in Africa: an expert panel report

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    S16ArtHokansonRiskInthomDev.pdf (574.0Kb)
    Date
    2016-02-15
    Author
    Hokanson, K.E.
    Ellstrand, N.C.
    Dixon, A.
    Kulembeka, H.P.
    Olsen, K.M.
    Raybould, A.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    The probability and consequences of gene flow to wild relatives is typically considered in the environmental risk assessment of genetically engineered crops. This is a report from a discussion by a group of experts who used a problem formulation approach to consider existing information for risk assessment of gene flow from cassava (Manihot esculenta) genetically engineered for virus resistance to the ‘wild’ (naturalized) relative M. glaziovii in East Africa. Two environmental harms were considered in this case: (1) loss of genetic diversity in the germplasm pool, and (2) loss of valued species, ecosystem resources, or crop yield and quality due to weediness or invasiveness of wild relatives. Based on existing information, it was concluded that gene flow will occur, but it is not likely that this will reduce the genetic diversity in the germplasm pool. There is little existing information about the impact of the virus in natural populations that could be used to inform a prediction about whether virus resistance would lead to an increase in reproduction or survival, hence abundance of M. glaziovii. However, an increase in the abundance of M. glaziovii should be manageable, and would not necessarily lead to the identified environmental harms.
    https://dx.doi.org/10.1007/s11248-015-9923-3
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/975
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1007/s11248-015-9923-3
    IITA Subjects
    Cassava
    Agrovoc Terms
    Cassava; Environmental Risk Assessment
    Regions
    West Africa
    Countries
    Nigeria
    Journals
    Transgenic Research
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    • Journal and Journal Articles5002
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