模拟的除草剂混合物延迟了杂草中专家单一基因和通用多基因耐药性的演变
Michael Renton1, Alan Willse2, Chandrashekar Aradhya2
1School of Biological Sciences and Agriculture and Environment, University of Western Australia, Perth, WA, Australia.
Pest management science
|August 3, 2024
概括
除草剂混合物和旋转可以延迟杂草中除草剂耐药性的演变. 然而,这些策略也可能增加一般性多基因耐药性的风险,而不是专业单基因耐药性的风险.
科学领域:
- 农业科学 农业科学
- 生态生态学 生态生态学
- 遗传学 是一个遗传学.
背景情况:
- 杂草中的除草剂耐药性对全球粮食安全构成重大威胁.
- 使用除草剂旋转和混合等策略来减缓耐药性的发展.
- 了解这些策略对不同抗性类型的影响对于有效的杂草管理至关重要.
研究的目的:
- 调查除草剂混合物和旋转是否可以延迟一般多基因和专业单基因除草剂耐药性的选择.
- 确定这些策略是否更有可能在具有不同生物特性的杂草类型中选择通用性抵抗.
主要方法:
- 利用模拟建模来分析抗除草剂耐药性的演变.
- 对比了除草剂混合物,旋转和单一除草剂应用的有效性.
- 评估了杂草生物特征 (生育能力,竞争力) 对耐药性演变的影响.
主要成果:
- 预计有效的除草剂混合物可以比旋转或单一除草剂使用更有效地延迟多基因和单基因耐药性.
- 与单一除草剂使用相比,混合和旋转策略都增加了多基因耐药性的可能性.
- 单基因与多基因抗性的选择主要取决于最初的等位基因频率.
结论:
- 建议进行除草剂旋转和设计精良的混合物,以延迟除草剂耐药性的演变,特别是在综合杂草管理计划中.
- 这些策略可能会增加选择通用多基因耐药性而不是专业单基因耐药性的风险.
- 混合物的有效性会降低,如果组件的使用率降低或有单独使用史.
相关概念视频
Plant Breeding and Biotechnology
18.9K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
18.9K
Defenses Against Pathogens and Herbivores
23.4K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
23.4K
Frequency-dependent Selection
21.9K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
21.9K
Antibiotic Selection
52.7K
Overview
52.7K
Genetics of Speciation
19.2K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.2K


