微生物组通过真核生物的二次代谢物azelaic acid调节的分子机制
Ahmed A Shibl1, Michael A Ochsenkühn1, Amin R Mohamed1
1Biology Program, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.
eLife
|January 8, 2024
概括
青酸 (Aze) 是藻类和细菌之间交换的关键化学物质. 这项研究揭示了细菌如何吸收,代谢或排毒Aze,影响海洋微生物群落和海洋碳循环.
科学领域:
- 微生物学 微生物学
- 海洋生物学 海洋生物学
- 生物化学 生物化学
背景情况:
- 光合作用真核生物及其微生物组参与化学交换.
- 青酸 (Aze) 是一种具有多种作用的代谢物,促进某些细菌的生长,抑制其他细菌的生长.
- 细菌中Aze吸收,同化和毒性的机制在很大程度上是未知的.
研究的目的:
- 研究微藻相关细菌中的azelaic acid (Aze) 的吸收,代谢和毒性机制.
- 为了确定参与Aze同化和排毒的细菌途径.
- 了解Aze在构建海洋微生物种群中的生态作用.
主要方法:
- 转录学和转录因子联合表达网络分析.
- 细菌吸收实验和代谢学.
- 使用Aze.对*Phycobacter*和*Alteromonas*进行生长测试.
主要成果:
- 确定了第一个用于Aze吸收的细菌C4-TRAP载体.
- 通过脂肪酸降解,氧酸盐和丁酸盐代谢证明了Aze的同化.
- 菌有效地利用Aze作为碳来源,而Aze则抑制了细菌中阻碍生长的细菌中的核糖体/蛋白质合成.
- 含有Aze的海水丰富了Aze分解细菌.
结论:
- 青酸 (Aze) 在调节真核生物与微生物群相互作用方面发挥着至关重要的作用.
- 细菌Aze代谢影响海洋生态系统中的碳循环.
- 溢出对于在敏感细菌中排毒Aze至关重要.
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