EPISODE · Mar 3, 2026 · 17 MIN
580-全球微生物群落结构与通才物种介导的基因流
from 聊聊Sci
这项研究通过对全球超过8.5万份宏基因组数据的深度分析，构建了一个揭示地球微生物栖息地结构与演化的宏大框架。研究人员发现，虽然大多数微生物属于特定于环境的专一型物种，但少数通用型物种具备跨越生态边界的能力，成为连接不同生境的关键桥梁。这些通用型微生物通过水平基因转移，在人体肠道、废水处理系统及自然环境等迥异的栖息地之间中转遗传物质。这种机制显著加速了抗生素耐药基因在全球范围内的扩散，凸显了人类活动对全球微生物群落结构的深刻影响。研究进一步指出，通用型物种的代谢灵活性和对氧气的利用能力是其实现跨生境生存的核心适应策略。总之，该成果为预测微生物功能演化及管理全球公共卫生风险提供了重要的科学依据。References: Kim C Y, Podlesny D, Schiller J, et al. Planetary microbiome structure and generalist-driven gene flow across disparate habitats[J]. bioRxiv, 2025: 2025.07. 18.664989.前往小宇宙评论区与主播互动
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580-全球微生物群落结构与通才物种介导的基因流
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