针对致病性真菌的epidithiodiketopiperazine甲基化和氧化的功能多样化
Shengquan Zhang1,2, Peng-Lin Wei2,3, Yuanyuan Li2,3
1School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.
Mycology
|September 12, 2025
概括
三皮菌的 hypoxylonon 在线试听
科学领域:
- 农业微生物学 农业微生物学
- 菌类学 菌类学是指菌类学.
- 生物化学 生物化学
背景情况:
- 三体物种对农业至关重要,增强植物生长并作为生物控制剂.
- 它们的有效性与各种二次代谢产物 (SMs) 相关,特别是epidithiodiketopiperazines (ETPs).
- 之前的工作确定了TdaH和TdaG作为ETP生物合成中的关键酶,催化甲基化和环氧化.
研究的目的:
- 研究ETP甲基化和TdaH和TdaG的环氧化功能的多样化.
- 评估这些酶修饰对Trichoderma hypoxylon对病原性真菌的生物控制能力的影响.
主要方法:
- 对Trichoderma hypoxylon进行基因操纵,以产生缺少TdaH (C6'-O-甲基化) 和TdaG (C4,C5-氧化) 功能的删除突变.
- 在体外对抗性测试针对11种致病性真菌物种 (Fusarium,Aspergillus,Botrytis).
主要成果:
- 与野生类型相比,删除突变对被测试的致病菌产生较少的对抗作用.
- 每个突变对特定的真菌病原体具有不同的疗效,表明甲基化和环氧化具有不同的作用.
- 在Trichoderma hypoxylon的适应和生物控制中,ETP的结构多样性至关重要.
结论:
- 这项研究表明ETP结构多样性对Trichoderma hypoxylon生物控制潜力的重要性.
- 通过TdaH和TdaG对ETPs的功能多样化对于对一系列植物病原体的有效对抗至关重要.
- 这些发现为开发由Trichoderma代谢物衍生的新型抗真菌剂提供了洞察力.
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