解读生存策略：四环素污染下赤子爱胜蚓的氧化应激和微生物相互作用,Science of the Total Environment

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解读生存策略：四环素污染下赤子爱胜蚓的氧化应激和微生物相互作用
Science of the Total Environment ( IF 8.2 ) Pub Date : 2023-11-17 , DOI: 10.1016/j.scitotenv.2023.168647
Yucui Ning ₁ , Siqi Wang ₁ , Yuting Sun ₁ , Shengwei Zhang ₁ , Yifan Wen ₁ , Detang Zou ₂ , Dongxing Zhou ₁

Affiliation

残留抗生素造成的土壤污染迫切需要了解污染环境中土壤生物的生存机制。这项研究的重点是四环素胁迫实验，在受控环境中使用无菌人造土壤进行。应激浓度范围为0至600 mg/kg，应激周期持续10或30天。本研究的目的是评估氧化应激的影响以及蚯蚓内外微生物群落的变化。利用因子分析、灰色关联分析和层次熵权分析，开发了一个综合数学模型来阐明生物体在受到压力后的反应。在四环素胁迫下，初始阶段（1-3天）在CAT和GPX酶的帮助下表现出氧化应激和土壤微生物群落的协调调节。随后的阶段（4-5天）进一步强调了土壤微生物群落的影响。在第三阶段（6-8天）观察到土壤微生物群落对氧化应激的显着“反馈调节”。蚯蚓在第四阶段（9-10天）保持代谢平衡。从长远来看，胁迫诱导了土壤微生物群落内的自我解毒机制，该机制与 GPX 合作应对氧化胁迫。

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Deciphering survival strategies: Oxidative stress and microbial interplay in Eisenia fetida under tetracycline contamination

Soil contamination resulting from residual antibiotics presents a pressing need to understand the survival mechanisms of soil organisms in polluted environments. This study focused on , and tetracycline stress experiments were conducted in a controlled environment using sterile artificial soil. The stress concentration ranged from 0 to 600 mg/kg, and stress cycles lasted either 10 or 30 days. The objective of this study was to assess the effects of oxidative stress and the changes in microbial communities both within and outside the earthworms. A comprehensive mathematical model was developed to elucidate the responses of organisms following exposure to stress utilizing factor analysis, grey relational analysis, and hierarchical entropy weight analysis. Under tetracycline stress, the initial stage (1–3 days) exhibited a coordinated regulation of oxidative stress and microbial communities in the soil with the assistance of CAT and GPX enzymes. The subsequent stage (4–5 days) further emphasized the influence of soil microbial communities. A notable “feedback regulation” of soil microbial communities on oxidative stress was observed during the third stage (6–8 days). Earthworms maintained a metabolic balance in the fourth stage (9–10 days). In the long term, the stress-induced a self-detoxification mechanism within soil microbial communities, which collaborated with GPX to respond to oxidative stress.

更新日期：2023-11-17

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