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空间代谢学揭示了青素酸在奶酪皮肤中的作用 腐烂真菌引起的肠道微生物组破坏
Carlismari O Grundmann1, Christopher Tomo2, Julia Hershelman2
1Department of Chemistry and Biochemistry - University of California Santa Cruz, Santa Cruz, California, USA.
bioRxiv : the preprint server for biology
|September 18, 2025
概括
腐烂菌 Aspergillus westerdijkiae 使用像青酸这样的真菌毒素来抑制有益的奶酪皮细菌. 这种化学战争塑造了微生物群落,并影响了食品安全和质量.
科学领域:
- 食品微生物学 食品微生物学
- 化学生态化学生态学
- 菌类学 菌类学是指菌类学.
背景情况:
- 奶酪皮中的微生物相互作用对社区结构,食品安全和产品质量至关重要.
- 在发酵食品中驱动这些相互作用的化学机制在很大程度上是未知的.
研究的目的:
- 调查腐烂菌Aspergillus westerdijkiae对有益的奶酪皮肤细菌使用的化学抑制策略.
- 阐明二次代谢产物在乳酪皮生态系统中调解真菌-细菌相互作用中的作用.
主要方法:
- 使用了omics技术的组合,包括质谱成像 (MSI) 和液态染色学-并联质谱 (LC-MS/MS).
- 与A. westerdijkiae和各种奶酪皮细菌进行了奶酪皮社区和共同培养实验.
- 用纯化青酸进行实验,以评估其抑制作用.
主要成果:
- 在共同培养实验中,A. westerdijkiae强烈抑制了大多数奶酪皮社区成员.
- MSI揭示了在真菌-细菌界面上局部产生的青酸和B ochratoxin.
- 在与Brachybacterium相互作用时,青酸水平增加,纯化青酸抑制了多种奶酪皮的细菌.
结论:
- 西方菌使用了依赖于环境的真菌毒素和二次代谢物的武器库,以破坏在奶酪皮上的微生物群体聚集.
- 这些化学策略是特定物种的,根据细菌的合作伙伴影响真菌的代谢反应.
- 了解这些相互作用对于控制食品安全和发酵食品的质量至关重要.
关键词:
亚斯伯吉勒斯 (Aspergillus westerdijkiae) 是一个在西欧的植物.这种细菌是Brachybacterium.斯塔菲洛科克斯 (Staphylococcus equorum) 是一个常见的病原体.菌-细菌相互作用图像质谱仪的质谱仪.菌类毒素 (mycotoxins) 是一种有毒的物质.天然的奶酪皮皮 奶酪皮皮更多相关视频
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