挥发性化合物引起的环境pH值变化介于长距离的跨种细菌相互作用
Na Luo1, Miaoxiao Wang2, Yong Nie3
1College of Earth and Space Sciences, Peking University, Beijing 100871, China.
The Science of the total environment
|June 4, 2023
概括
细菌可以通过空气中的氨来远距离通信. 这一发现揭示了空间分离的微生物如何相互作用并影响社区生长,扩大了我们对微生物相互作用的理解.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 生物化学 生物化学
背景情况:
- 微生物相互作用通常依赖于连接的水性环境中的短距离扩散.
- 在空间上不连续的微型息地对理解微生物通信提出了挑战.
- 不连接的息地中的微生物之间的相互作用机制尚不清楚.
研究的目的:
- 在空间分离的息地研究远距离微生物相互作用.
- 为了识别调解断开的细菌群落之间的通信的挥发性化合物.
- 了解空气中传递的信号如何影响微生物社区的结构和功能.
主要方法:
- 培养细菌菌株Corynebacterium glutamicum和Glycocaulis alkaliphilus. 这些细菌菌株的培养.
- 测量氨的产生和分散.
- 监测pH值变化和微生物生长在脱节的息地.
- 在多种细菌群体中分析氨介导相互作用.
主要成果:
- 谷氨菌 (Corynebacterium glutamicum) 产生的空气中的氨含量很高,可以分散到12厘米.
- 氨的分散增加了脱节的息地中的pH值,促进了像Glycocaulis alkaliphilus这样对酸敏感细菌的生长.
- 氨介导的长距离相互作用在各种细菌群体中普遍存在.
- 挥发性化合物的气体扩散促进了息地间微生物的交流.
结论:
- 不连续的微生物息地中的细菌可以通过挥发性化合物的长距离气态扩散来相互作用.
- 这种机制扩大了已知的微生物相互作用的空间规模.
- 空载信号在连接空间分离的物种方面发挥着至关重要的作用,增强了社区层面的共生主义.
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