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中瑞两国科研人员联手绘制微生物在植物根系的“定居地图”
Xin Hua She· 2025-10-03 08:46
Core Insights - The research reveals the intricate relationship between plant roots and soil microorganisms, focusing on how roots guide microbial colonization and the molecular mechanisms involved [4][5][8] Group 1: Research Findings - The study published in the journal "Science" uncovers the "settlement map" of root-associated microorganisms and decodes the "molecular code" controlling root-microbe interactions [4][5] - The research team utilized plant seedling root systems as a model, employing fluorescently labeled live microorganisms and high-resolution imaging techniques to demonstrate that microbial settlement on root surfaces follows a systematic spatial distribution [5][7] - The integrity of a specific barrier in the root, known as the "Casparian strip," is crucial for maintaining this orderly microbial settlement; any disruption leads to nutrient leakage, particularly of the amino acid glutamine [5][7] Group 2: Implications for Agriculture - The study indicates that the leakage of glutamine from roots significantly influences microbial chemotaxis, thereby regulating microbial behavior such as movement and reproduction [7][8] - The findings provide a technical pathway for the precise enrichment of beneficial microbial communities in crop rhizospheres, which is essential for advancing "carbon sequestration" green agriculture [8] - This research lays a theoretical foundation for achieving agricultural green transformation under the "dual carbon" goals, highlighting its significant scientific implications [8]
登上《科学》封面 中瑞科研团队联手揭晓根系微生物“安家”奥秘
Zhong Guo Xin Wen Wang· 2025-10-03 05:49
中新网上海10月3日电(记者 郑莹莹)北京时间10月3日凌晨,中国科学院分子植物科学卓越创新中心周峰 研究团队,联合瑞士洛桑大学的科研人员在国际知名学术期刊《科学》(Science)上发表了一篇封面文 章。该研究首次精准揭晓植物根系引导微生物在其表面"安家"的奥秘,绘制出根系微生物的"定居地 图"。 中国科学院分子植物科学卓越创新中心周峰研究团队。(中国科学院分子植物科学卓越创新中心周峰研 究团队供图) 揭晓微生物"安家"奥秘 在采访中,中国科学院分子植物科学卓越创新中心研究员周峰把根系微生物称为一种生命活动的"暗物 质"。 "凯氏带屏障非常重要,它要打开一定的缺口,来'招募'一些共生菌,以促进植物生长。"周峰说。 大量微生物附着在根系上,帮助植物吸收营养和抵抗逆境。然而,由于土壤的"黑暗环境",根系与微生 物之间如何互动很难被直接观测。 中瑞两国研究团队以植物幼苗根系为研究模型,发现微生物在根系表面的"定居"并非杂乱无章,而是呈 现有规律的空间分布。 通过凯氏带,植物得以稳定根系内部的营养物质,并防止其随意泄漏,以控制病原微生物的过量繁殖, 从而维持根际微生物群的健康平衡。 在应用意义方面,这项研究提示可以 ...