水生植物根系在四环素类抗生素污染水体修复中的作用及其机理研究

Study Progress on the Role and Mechanism of Remediation by Aquatic Plant Roots in Tetracycline Antibiotics-contaminated Water Bodies

  • 摘要: 四环素类抗生素在畜禽、水产养殖中的滥用引发了广泛的水环境污染问题, 威胁生态系统平衡和人类健康。植物修复是一种成本低廉、无二次污染的绿色原位修复技术, 已广泛应用于抗生素污染水体治理。植物根际具有丰富多样的微生物群落和完备的微生物生态系统, 在植物修复过程中发挥了关键作用, 但相关机制还不清楚。本文综述了当前关于植物修复过程中根际微生物、根系分泌物及各种生物酶等对常见抗生素尤其是四环素类抗生素降解的研究进展, 在此基础上对水体抗生素污染修复领域今后的研究方向进行了展望, 试图阐明植物根系、根系分泌物以及根际微生物对四环素类抗生素的去除作用及机理, 以便在今后的修复实践中合理调节影响降解的主控因子, 为优化水生植物的生态修复治理方案提供理论依据。

     

    Abstract: The abuse of tetracyclines in livestock breeding and aquaculture has caused widespread water pollution problems, threatening the ecological balance and human health. Phytoremediation is a low-cost green in-situ remediation technology without secondary pollution that has been widely used in the treatment of antibiotic contaminated water. The rhizosphere of plants evolved a complex microbial community and a complete microbial ecosystem, which plays a crucial role in phytoremediation processes, but the relevant mechanisms are still unclear. This paper reviewed the current research progress on the degradation of common antibiotics, especially tetracycline antibiotics, by rhizosphere microorganisms, root exudates, and various enzymes during phytoremediation. Based on this, the further research interests in the remediation of antibiotic pollution in water bodies were summarized and proposed. The present review provides a theoretical basis for elucidating the removal and mechanisms of tetracycline antibiotics by plant roots, root exudates, and rhizosphere microorganisms, which would help to improve and regulate the major controlling factors affecting degradation in future remediation practices, and optimize the ecological restoration and management plans of aquatic plants.

     

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