基因组洞察到三个关键的真菌植物病原体的历史适应
Joris A Alkemade1,2, Edgar L Y Wong1,3, Alan G Buddie4
1Department of Biology, University of Oxford, Oxford, UK.
Genome biology and evolution
|December 22, 2025
概括
历史上的真菌病原体显示出不同的进化路径. 像Verticillium nonalfalfae这样的无性真菌利用可转移的元素,而像Fusarium culmorum和Botrytis cinerea这样的性物种依赖于基因突变,影响杀菌剂耐药性和适应性.
科学领域:
- 菌类学 菌类学是指菌类学.
- 进化生物学 进化生物学
- 农业科学 农业科学
背景情况:
- 菌类培养收藏为研究进化提供了有价值的历史隔离物.
- 近几十年来,农业工业化对真菌种群产生了重大影响.
研究的目的:
- 分析三个主要的真菌作物病原体的种群结构和时间演变:Verticillium nonalfalfae,Fusarium culmorum和Botrytis cinerea.
- 调查驱动真菌适应环境变化的遗传机制,以应对自绿色革命以来的环境变化.
主要方法:
- 对1956年至2023年期间收集的真菌分离物进行了种群结构和时间关联分析.
- 单核酸多态性 (SNP) 分析被用来识别随着时间的推移发生的遗传变化.
- 比较基因组学探讨了性和无性真菌物种之间的进化策略的差异.
主要成果:
- Fusarium culmorum和Botrytis cinerea主要表现出性繁殖,时间SNP靠近编码基因.
- Verticillium nonalfalfae在很大程度上表现出无性繁殖,与可转移元素 (TE) 相关的时间变异SNP.
- 在所有物种中,快速进化的SNP与参与真菌杀菌剂耐药性 (主要促进者超级传递者家族) 和应激反应/病变发生 (Zn2Cys6转录因子) 的基因有关.
结论:
- 罕见的真菌物种可能依赖于TE介导的多样化,与性重组策略形成鲜明对比.
- 时间关联分析是研究真菌进化的一种强大的非定向方法.
- 了解这些进化动态对于管理真菌作物病原体和确保农业可持续性至关重要.
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