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鉴定和转录基因分析显示,由Staphylococcus epidermidis GXALA1产生的细胞外聚合物质的高吸附性能

Yinyan Chen¹, Zhijia Fang¹, Yongbin Li¹

¹College of Food Science and Technology, Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Provincial Engineering Technology, Research Center of Marine Food, Key Laboratory of Advanced Processing of Aquatic Products of Guangdong Higher Education Institution, Guangdong Ocean University, Zhanjiang, 524088, China.

International journal of biological macromolecules

|December 6, 2025

概括

斯塔菲洛科克斯 (Staphylococcus epidermidis) GXALA1通过其细胞外聚合物物质 (EPS) 有效地去除 (Al3+). 这种微生物生物修复策略显示出高吸附率和能力,为污染提供了一个有希望的解决方案.

科学领域:

环境微生物学环境微生物学
生物修复是一种生物修复.
材料科学材料科学材料科学

背景情况:

(Al) 污染物对环境和健康构成重大风险.
微生物及其细胞外聚合物物质 (EPS) 在金属生物修复中有效.

研究的目的:

研究Staphylococcus epidermidis GXALA1及其EPS的Al3+吸附能力.
阐明S. epidermidis GXALA1.1.通过Al3+生物吸收所涉及的机制.

主要方法:

从受Al污染的土壤中分离和描述S. epidermidis GXALA1.
使用微观和多光谱分析进行吸附实验.
同热和动力建模 (弗朗德利希,伪二阶).
转录组测序以分析基因表达变化.

主要成果:

S. epidermidis GXALA1表现出极好的Al3+吸附能力,其中80%被吸附到EPS上.
所分泌的EPS的吸附率高达93.88%,吸附能力高达87.19 mg/g.
弗洛伊德利希等温和和伪二阶模型最好地描述了吸附过程.
在EPS中的含氧组,多糖和酸类物质是关键的结合点.
转录组分析显示了碳水化合物代谢和糖甘生物合成途径的上调调节.

结论:

S. epidermidis GXALA1及其EPS对Al3+生物吸收非常有效.
EPS的组成,特别是多糖,在Al3+结合中起着至关重要的作用.
微生物生物修复为管理污染提供了一种可持续的方法.

关键词:

吸附方式吸附方式吸附方式合金合金是一种细胞外聚合物质 (EPS) 是一种聚糖类是多糖类的.斯塔菲洛科克斯 (Staphylococcus epidermidis) 是一种表皮菌.文字转录学 (Transcriptomics) 是一个学科.

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