防止多重耐药性:管理真菌适应的新见解
Agathe Ballu1, Claire Ugazio1, Clémentine Duplaix1
1Université Paris-Saclay, INRAE, UR BIOGER, Palaiseau, France.
Environmental microbiology
|April 3, 2024
概括
可持续的作物保护策略必须考虑最初的病原体耐药性. 多样化的真菌杀菌剂作用模式延迟了耐药性,但先前的耐药性可以否定这些好处,需要针对小麦病原体 (如Zymoseptoria tritici) 进行量身定制的管理.
科学领域:
- 农业科学 农业科学
- 植物病理学 植物病理学
- 进化生物学 进化生物学
背景情况:
- 可持续的作物保护对全球粮食安全至关重要.
- 病原体种群发展出耐药性,威胁到作物产量.
- 管理杀菌剂耐药性需要了解选择压力.
研究的目的:
- 研究不同的管理策略如何影响Zymoseptoria tritici.的真菌杀菌剂耐药性演变.
- 为了确定多样化的选择压力在延迟电阻方面的有效性.
- 评估最初的病原体耐药性状态对管理结果的影响.
主要方法:
- 使用Zymoseptoria tritici.三种人造种群的实验进化.
- 种群的初始耐药性概况各不相同 (原始的,低频的单一耐药性,先前存在的多重耐药性).
- 应用多样化的选择压力,包括剂量变化和活性成分组合.
主要成果:
- 多样化的选择压力有效地减缓了原始和低耐药群体的耐药性发展.
- 增加杀菌剂作用模式的数量是延迟耐药性的最有效策略.
- 病原体种群中先前存在的多重耐药性取代了多样化管理策略的好处.
结论:
- 可持续的耐药性管理必须考虑到病原体种群的初始耐药性格局.
- 虽然行动方式的多样化是有益的,但它可能有利于泛化.
- 有效的策略需要特别考虑先前的耐药性,以确保小麦病原体的现实应用.
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