College of Engineering, Peking University, Beijing, 100871, China.
The Experimental High School Attached to Beijing Normal University, Beijing, 100032, China.
Curr Microbiol. 2021 May;78(5):2112-2121. doi: 10.1007/s00284-021-02451-7. Epub 2021 Mar 25.
In modern societies, people spend most of their time in the built environment which harbors unique microbial assemblages with the potential to influence human health. However, how the occupants of buildings influence indoor microbial communities remains under-researched. Here, we investigated the diversities of the bacterial communities of a typical Chinese middle school to demonstrate the effects of occupant activities on bacterial communities inside classrooms. The results showed that samples taken from classrooms exhibited higher microbial diversity compared to samples collected from public areas such as gym and restaurant, suggesting the occupant activities could increase the diversities of the indoor microbial communities. Moreover, we also found that the duration of occupation strongly influence the presence/absence of phylogenetic lineages of the bacterial communities, the type of occupants, on the other hand, affect the relative abundances of bacterial taxa. In addition, samples taken from classrooms with longer occupation time exhibited a better fit to the Sloan Neutral Community Model for Prokaryotes, suggesting that room occupation influences the assembly process of microbial communities. In conclusion, our study demonstrates that the duration of occupation and the type of occupants influence the microbiome of the built environment.
在现代社会，人们大部分时间都在建筑环境中度过，而建筑环境中蕴藏着独特的微生物群落，这些微生物群落有可能影响人类健康。然而，建筑物的居住者如何影响室内微生物群落，这方面的研究还很不足。在这里，我们调查了一所典型的中国中学的细菌群落多样性，以证明居住者活动对教室内部细菌群落的影响。结果表明，与体育馆和餐厅等公共区域采集的样本相比，从教室采集的样本显示出更高的微生物多样性，这表明居住者的活动可以增加室内微生物群落的多样性。此外，我们还发现，居住时间的长短强烈影响着细菌群落的系统发育谱系的存在/缺失，而居住者的类型则会影响细菌分类群的相对丰度。此外，在居住时间较长的教室中采集的样本更符合用于原核生物的 Sloan 中性群落模型，这表明房间的居住时间会影响微生物群落的组装过程。总之，我们的研究表明，居住时间的长短和居住者的类型会影响建筑环境的微生物组。
