通过公共物品促进的细菌间互惠主义,在一个以确定性温度变化为特征的系统中
Yuxiang Zhao1, Zishu Liu1, Baofeng Zhang2
1College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China.
Nature communications
|September 5, 2023
概括
堆肥中的高温促进了细菌互惠,物种共享诸如科巴拉之类的营养素. 这种温度驱动的相互作用减少了微生物群落内的竞争.
科学领域:
- 微生物学 微生物学
- 生态生态学 生态生态学
- 生物地质化学生物地质化学
背景情况:
- 互惠主义在自然界中普遍存在,但在细菌群落中记录较少.
- 假设非生物压力可以促进微生物互惠,但研究是有限的.
研究的目的:
- 调查温度作为非生物性压力因子在促进堆肥系统内的细菌互惠主义中的作用.
- 为了确定特定的细菌菌株和参与温度诱导的相互相互作用的机制.
主要方法:
- 在具有温度变化 (20°C-70°C) 的准自然堆肥系统中监测微生物群落.
- 使用基因组分析和培养实验来识别细菌菌株和相互作用.
- 分析大约3000个细菌配对来量化互惠和竞争的频率.
主要成果:
- 选择了耐压菌株的温度变化,包括*Thermobifida fusca*和*Saccharomonospora viridis*.
- 这些选定的菌株与其他菌株之间出现了互惠的相互作用,通过共享可巴胺来促进这种相互作用.
- 在约39.1%的涉及*T. fusca*和*S. viridis*的配对中观察到互惠主义,而竞争则很少 (约13.9%).
结论:
- 高温可以显著有利于互惠,而不是在细菌群体中的竞争.
- 营养素的共享,特别是胺,在温度驱动的细菌互生中起着关键作用.
- 该研究提供了温度介导的微生物社区重组有利于合作的证据.
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