通过联合代谢通过氧化通过Achromobacter加强了硫甲的降解
Luping Zeng1, Xianke Lin2, Hongwei Du3
1The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, No. 18 Ruihe Road, Guangzhou, 510530, China; Research Center of Hydrobiology, Department of Ecology, Jinan University, Guangzhou, 510632, China.
Journal of environmental management
|November 6, 2025
概括
将葡萄糖添加到硫甲 (SM2) 生物修复过程中,可以提高 64% 的细菌生长和 SM2 除去. 这种共同代谢促进了关键的降解基因,并减少了有毒中间体,优化了微生物排毒和矿化.
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.
- 分子生物学分子生物学
背景情况:
- 硫甲 (SM2) 是一种常见的制药污染物.
- 生物修复策略对于从环境中去除SM2至关重要.
- 了解微生物对共同代谢的代谢反应是优化生物修复的关键.
研究的目的:
- 为了研究葡萄糖共同代谢对硫甲 (SM2) 生物修复的影响,由菌株JD417.
- 阐明在共代谢条件下SM2降解和排毒的分子机制.
- 评估碳可用性在平衡微生物应激反应和降解途径中的作用.
主要方法:
- 与SM2一起使用葡萄糖作为主要碳源的共同代谢实验.
- 转录组测序来分析JD417.7菌株的基因表达变化.
- 酶活性测定用于测量抗氧化剂防御.
主要成果:
- 葡萄糖的共同代谢显著增加了64.45%的SM2去除率和227.70%的细菌繁殖 (OD600).
- 转录组分析显示,对编码氧化降解酶,转移酶和特定硫胺 (SA) 降解途径 (sadA,sadB,sadC,catA,catB,pcaC,pcaJ) 的基因进行上调调.
- 在没有共同代谢的情况下,JD417菌株提高了应激反应基因的调节,并增强了抗氧化剂防御 (CAT,GST,SOD).
结论:
- 葡萄糖共同代谢优化SM2生物修复,通过增强降解途径和最大限度地减少有毒中间体的积累.
- 菌株JD417根据碳的可用性动态分配代谢资源,平衡排毒和矿化.
- 这项研究为通过微生物共同代谢对硫胺的生物修复提供了分子洞察力.
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