| 水环境中口罩源“塑料际”微生物生态 |
| 摘要点击 953 全文点击 213 投稿时间：2024-02-08 修订日期：2024-05-06 |
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| 中文关键词 口罩 塑料际 微生物 组装机制 生态学 |
| 英文关键词 mask plastisphere microbiology assembly mechanism ecology |
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| 中文摘要 |
| 因疫情及其它呼吸道疾病影响,医用口罩常态化使用增加,其废弃物进入环境中风险增大且产生的微塑料可能会对水生态系统产生影响. 通过对口罩进入水环境的模拟实验,探究口罩不同层微生物群落多样性、功能、组装机制和相互作用. 结果表明,各层口罩源“塑料际”有独特的微生物群落,且随时间增加,丰富度逐渐提高. 口罩源“塑料际”微生物功能也随时间显著变化,且与致病微生物、光营养、有机物降解和C、N、S元素循环有关. 口罩源“塑料际”微生物群落组装机制研究结果表明,随机性过程更为重要（NST>0.5）,但随时间增加,确定性过程的作用逐渐提高. 共生网络结果表明,不同层口罩源“塑料际”微生物都有较高的模块数和模块化程度,且随着定植时间增加,微生物群落复杂性逐渐降低. 口罩源“塑料际”有着独特的生态过程,该研究有助于对口罩源“塑料际”生态效应和微生物定植过程的理解. |
| 英文摘要 |
| As a result of the impact of COVID-19 and other respiratory diseases, the regular use of medical masks and the associated risk that the mask waste enters the water environment have increased, and the mask-derived microplastics are finally posing a potential impact on the aquatic ecological environment. This study explored the microbial diversity, function, assembly mechanism, and ecological network in the plastisphere derived from different layers of masks. The results indicated that the plastisphere in each layer had a unique microbial community, and the community richness gradually increased over time. The functions of microbial communities in the plastisphere, including pathogenicity, phototrophy, compound degradation, and the functions related to the cycling of carbon, nitrogen, and sulfur, changed significantly over time. As to the microbial assembly mechanism in the plastisphere, stochastic processes were more dominant （NST>0.5）, but the influence of deterministic processes gradually grew. The ecological network results indicated that all the plastispheres exhibited a high number of modules and high modularity, and the complexity of the microbial community gradually decreased with colonization time. This study indicates that the mask-derived plastisphere has a unique ecological process, which strengthens our understanding of the ecological effects and microbial colonization processes of the mask-derived plastisphere. |
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