Abstract：
Fluorene is a coastal sediment pollutant with high ecological risk. Perinereis aibuhitensis is an ecotoxicological model used for polycyclic aromatic hydrocarbon bioremediation; however, the effects of fluorene on the physiological metabolism of P. aibuhitensis and its corresponding responses remain unclear. This study explored the tolerance and defense responses of P. aibuhitensis in sediments with different fluorene concentrations using histology, ecological biomarkers, and metabolic responses. Metabolomics analyses revealed that P. aibuhitensis has high tolerance to fluorene in sediments. Fluorene stress disrupted the normal metabolism of the P. aibuhitensis body wall, resulting in excessive glycosphospholipid and stearamide accumulation and elevated oxygen consumption rates. To mitigate this, P. aibuhitensis has adopted tail cutting, yellowing, and modulation of metabolite contents in the body wall. This study provides novel insights into the potential ecological risk of fluorene pollution in marine sediments and proposes the use of P. aibuhitensis in the bioremediation of fluorene-contaminated sediments.
摘要：
芴是一种具有高生态风险的沿海沉积物污染物。Perinereisaibuhitensis是用于多环芳烃生物修复的生态毒理学模型；但是，芴对艾氏疟原虫生理代谢及其相应反应的影响尚不清楚。本研究采用组织学方法探讨了不同芴浓度沉积物中白化假单胞菌的耐受性和防御反应。生态生物标志物，和代谢反应。代谢组学分析表明，艾布希特菌对沉积物中的芴具有较高的耐受性。芴胁迫破坏了白化假单胞菌体壁的正常代谢，导致糖脂和硬脂酰胺积累过多，耗氧率升高。为了缓解这种情况，艾布希特氏菌采用了剪尾，变黄,以及体壁中代谢物含量的调节。这项研究为海洋沉积物中芴污染的潜在生态风险提供了新的见解，并提出了在芴污染的沉积物的生物修复中使用巴布希特菌。
