微生物组在中国空间站的地面模拟船中,在人类居住50天期间
Ying Zhang1, Zhidong Li2, Yuan Peng1
1School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
ISME communications
|March 18, 2024
概括
在中国空间站的微生物群落.
科学领域:
- 空间微生物学 空间微生物学
- 天体生物学 天体生物学
- 环境微生物学环境微生物学
背景情况:
- 空间站的死角区域容易发生微生物爆发.
- 这些清理不足的地区的微生物组仍然未被研究.
- 了解空间站微生物群对于机组人员的健康和任务安全至关重要.
研究的目的:
- 在中国空间站的地面模拟器中调查死角地区的微生物组.
- 为了分析50天的微生物社区变化,三名船员的占领.
- 为了识别与宇航员活动相关的微生物生物标志物.
主要方法:
- 利用一种新的抽样方法进入死角区域.
- 在中国空间站天河核心模块的地面模拟中进行了为期50天的研究.
- 采用光计数和可培养生物负担分析.
主要成果:
- 宇航员的职业生涯对占主导地位的细菌群体的影响很小,但改变了特定的比例.
- 经常访问的地区的生物标志物反映了人体皮肤和肠道微生物.
- 很少参观的地区显示出常见的环境微生物群.
- 细菌活力在70.12-84.78%之间,微生物数量随着时间的推移而增加.
- 确定了八个可种植的属,包括 *Penicillium*, *Bacillus* 和 *Acinetobacter*.
结论:
- 空间站的占用影响了微生物群落的组成,特别是在经常访问的区域.
- 环境和人类相关的微生物在空间站类似的环境中共存.
- 已被确定为未来微生物控制策略的潜在目标的*Chryseomicrobium*属.
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