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

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Title: Assessing the Impact of Pollen-mediated Gene Flow from GM Herbicide Tolerant Brassica Napus into Common Wild Relatives in Ireland
Authors: Collier, Marcus
Mullins, Ewen
Permanent link: http://hdl.handle.net/10197/3952
Date: Nov-2012
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.
Type of material: Journal Article
Publisher: Royal Irish Academy
Copyright (published version): 2012 Royal Irish Academy
Subject LCSH: Transgenic plants--Risk assessment--Ireland
Biodiversity--Ireland
Oilseeds--Ireland
DOI: 10.3318/BIOE.2012.12
Language: en
Status of Item: Peer reviewed
Appears in Collections:Architecture, Planning and Environmental Policy Research Collection

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