Core Insights - The research conducted by Anhui Normal University reveals the interference mechanism of low-concentration antibiotics on microbial nitrogen cycling, significantly promoting nitrous oxide emissions, providing new scientific evidence for understanding the climate effects of antibiotic pollution [1][3] Group 1: Research Findings - The study focuses on the physiological response mechanisms of denitrifying bacteria to tetracycline antibiotics at environmental concentrations, demonstrating that even at sub-lethal concentrations, antibiotics can significantly delay nitrate removal and increase nitrous oxide emissions [3] - The research team utilized enzyme activity measurements, cellular physiology, and transcriptomics analysis to show that antibiotics inhibit protein synthesis and disrupt glucose metabolism and electron transport, leading to redox imbalance and accumulation of reactive oxygen species, which in turn suppresses the activity of enzymes that reduce nitrous oxide [3] - This study is the first to elucidate the non-lethal interference pathway of sub-lethal concentrations of antibiotics on nitrogen cycling from the perspective of the "antibiotic-microbe-greenhouse gas" chain mechanism, providing new evidence for assessing the environmental and climate effects of antibiotic pollution [3] Group 2: Implications - The findings suggest that the long-term ecological effects of low-concentration antibiotics should be considered in environmental risk assessments and global nitrous oxide emission models [3]

碳 （C） 和 氮 （N） 是全球生物地球化学循环中的核心元素。为了有效管理中国的碳和氮，研究团队开发了一个综合模型，用于量化碳和氮的通量，并研究它 们在 16 个人类和自然子系统中的相互作用。 撰文丨王聪 编辑丨王多鱼 排版丨水成文 人类的活动极大地扰乱了地球的 碳循环 和 氮循环 ，带来了明显的生态后果。成功地加以管理以将这些影响降至最低，对于维护环境网络和人类社会的可持续性 至关重要。 2025 年 6 月 5 日，浙江大学环境与资源学院 谷保静 教授团队在国际顶尖学术期刊 Science 上发表了题为： Integrated carbon and nitrogen management for cost-effective environmental policies in China 的研究论文。 该研究开发了一个综合模型， 用于量化碳和氮的通量及其相互作用，通过以综合方式共同管理它们，与分别处理相比，可以以更低的减排成本实现碳和氮的大幅 减少，并带来更大的社会效益。 https://www.science.org/doi/10.1126/science.ads4105 设置 星标 ，不错过精彩推文 ...