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    Assessing the Impact of Pollen-mediated Gene Flow from GM Herbicide Tolerant Brassica Napus into Common Wild Relatives in Ireland

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    BIoE ProcRIA 112B 257-266.pdf
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    Author
    Collier, Marcus J.
    Mullins, Ewen cc
    Keyword
    GM crops
    Environmental impact
    Brassica napus (oilseed rape)
    DNA transfer
    Pollen-mediated gene flow
    Biodiversity
    Date
    30/04/2012
    
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    URI
    http://hdl.handle.net/11019/566
    Citation
    Marcus J. Collier and Ewen Mullins. (2012). Assessing the impact of pollen-mediated gene flow from GM herbicide tolerant Brassica Napus into common wild relatives in Ireland. Biology and Environment: Proceedings of the Royal Irish Academy, 112B, 257-266. DOI:
    Abstract
    Although now we have had many years of research completed on assessing the potential environmental impact of GM crops, concern remains over their potential impact on biodiversity in the rural landscape. In particular, issues have arisen in regards to the modification of crops with traits that could introgress into sexually compatible wild relatives. In contrast to wheat, barley, potato and maize, Brassica napus (oilseed rape) is the only commercial crop grown in Ireland at present with the potential to successfully transfer its DNA, via pollen-mediated gene flow, into inter-related weed species. This review details the species in question and by examining the relevant literature that relates to Irish agronomic conditions, demonstrates that gene flow is likely to occur, especially to an earlier used cultivar, Brassica rapa. However, the critical factor remains not that GM traits will flow from the commercial source but what might the consequences of said gene flow events be. This review indicates that the conferred trait in question (in this case, herbicide tolerance) can only impact on weed diversity in the presence of selecting herbicide action. In the absence of the herbicide, the GM traits will be lost from the wild species over time and will not confer any selective advantage that could facilitate population growth.
    Funder
    Environmental Protection Agency; Teagasc
    Grant Number
    ERTDI 2006-B-MS-46; 2007-B-DS-1-S1
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.3318/BIOE.2012.12
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