ASSESSING THE IMPACT OF POLLEN-MEDIATED GENE FLOW FROM GM HERBICIDE TOLERANT BRASSICA NAPUS INTO COMMON WILD RELATIVES IN IRELAND

IF 0.6 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
Marcus Collier, E. Mullins
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引用次数: 3

Abstract

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.
评估转基因耐除草剂甘蓝型油菜花粉介导的基因流对爱尔兰常见野生近缘种的影响
摘要:虽然转基因作物对环境的潜在影响已经进行了多年的研究,但其对农村景观生物多样性的潜在影响仍然令人担忧。特别是,问题已经出现在有关作物的修改,其特征可能渗入到性相容的野生亲缘。与小麦、大麦、马铃薯和玉米不同,油菜是目前在爱尔兰种植的唯一一种有可能通过花粉介导的基因流成功地将其DNA转移到相互关联的杂草物种中的商业作物。这篇综述详细介绍了所讨论的物种,并通过检查与爱尔兰农艺条件有关的相关文献,证明了基因流动可能发生,特别是对早期使用的栽培品种,芸苔。然而,关键因素仍然不是转基因性状将从商业来源流出,而是所述基因流动事件的后果可能是什么。这一综述表明,所讨论的授予性状(在这种情况下,除草剂耐受性)只能在选择除草剂作用的情况下影响杂草多样性。在没有除草剂的情况下,野生物种的转基因性状将随着时间的推移而丧失,并且不会赋予任何有利于种群增长的选择优势。
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来源期刊
CiteScore
1.10
自引率
0.00%
发文量
6
审稿时长
>36 weeks
期刊介绍: The journal aims to offer a broad coverage of the subject area, including the following: - biology and ecology of the Irish flora and fauna - microbial ecology - animal, plant and environmental physiology - global change - palaeoecology and palaeoclimatology - population biology; conservation of genetic resources - pollution and environmental quality; ecotoxicology - environmental management - hydrology - land use, agriculture, soils and environment. Submissions on other relevant topics are also welcome, and papers of a cross-disciplinary nature are particularly encouraged.
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