565-全球微生物群落结构与通才驱动的基因流 episode artwork

EPISODE · Feb 27, 2026 · 19 MIN

565-全球微生物群落结构与通才驱动的基因流

from 聊聊Sci

这项研究通过分析全球超过8.5万个元基因组,构建了一个跨越行星尺度的微生物栖息地框架,揭示了全球微生物群落的结构与演化规律。研究发现,虽然多数物种受限于特定环境,但全能型物种(generalists)能够跨越生态边界,在迥异的栖息地之间生存并繁衍。这些全能型微生物充当了基因流动的媒介,通过水平基因转移促进了功能基因在不同环境间的传播。特别值得关注的是,它们在抗生素耐药性(AMR)的扩散中扮演了核心角色,例如将耐药基因从人类肠道经由废水系统输送至自然环境。该研究不仅阐明了环境选择对基因组特征的塑造作用,还为监测人类活动对全球微生物组连接性的影响提供了系统性的科学依据。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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565-全球微生物群落结构与通才驱动的基因流

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