模拟的微重力影响 Vibrio fischeri 种群结构与动物宿主相互关联
Clotilde Bongrand1, Jamie S Foster1
1Department of Microbiology and Cell Science, Space Life Sciences Lab, University of Florida, Merritt Island, Florida, USA.
Environmental microbiology
|October 12, 2023
概括
模拟微重力改变了尾鱼的有益细菌种群. 虽然殖民行为保持不变,
科学领域:
- 微生物学 微生物学
- 这种共生是共生.
- 空间生物学 空间生物学
背景情况:
- 主体-微生物的相互作用对于恒温至关重要.
- 环境压力因素会破坏这些有益的关系.
- 尾 (Euprymna scolopes) 和Vibrio fischeri细菌形成了一个模范的共生系统.
研究的目的:
- 为了研究模拟微重力对Euprymna scolopes中Vibrio fischeri菌株的殖民行为的影响.
- 确定微重力是否会影响殖民期间不同细菌菌株的种群动态和相对丰度.
- 了解环境压力如何影响动物-微生物有益相互作用的启动.
主要方法:
- 利用高尺寸比容器来模拟微重力条件.
- 接种了Vibrio fischeri菌株,表现出主导或共享殖民行为.
- 使用光器官同质计数和共聚焦显微镜量化细菌殖民.
主要成果:
- 模拟的微重力并没有改变细菌菌株的内在殖民行为.
- 与正常重力相比,共享菌株在单个殖民的微重力暴露的鱼中相对丰度较低.
- 微重力暴露诱导了共殖民的鱼菌株的相对丰度的变化.
结论:
- 环境压力因素,如模拟的微重力,可以影响宿主殖民期间的人口水平和有益微生物的相对丰富性.
- 同生关系的开始和稳定性可能对环境条件的变化敏感.
- 这些发现突出了太空飞行对宿主微生物相互作用的潜在影响.
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