Resistance and removal mechanisms of deep-sea Bacillus sp. A260 in mitigating Mn2+and microplastic pollution
文献类型：期刊论文
| 作者 | Gu, Zihao1,3,4,5,6; Zheng, Rikuan1,2,3,5,6; Sun, Chaomin1,2,3,5,6; Wu, Shimei4 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2025-09-15 |
| 卷号 | 496页码:13 |
| 关键词 | Manganese Deep sea Mineralization Biofilm Microplastic |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2025.139429 |
| 通讯作者 | Sun, Chaomin(sunchaomin@qdio.ac.cn) ; Wu, Shimei(shimeiwu2016@126.com) |
| 英文摘要 | Driven by rapid industrial development, manganese (Mn2+) and microplastic pollution pose serious threats to aquatic ecosystems and human neurological health, highlighting the urgent need for effective control strategies. Bioremediation has gained increasing attention in recent years owing to its high efficiency and environmentally friendly nature. In this study, we isolated a Mn2+-resistant strain, Bacillus sp. A260, from deep-sea cold seep sediments. This strain displayed exceptional tolerance to 300 mM Mn2+ and produced significant quantities of manganese carbonate (MnCO3). Notably, elevated Mn2+ concentrations promoted biofilm formation by strain A260. Further mechanistic investigations revealed a coordinated regulatory network in Bacillus sp. A260, involving MntR-mediated Mn2+ homeostasis, YkoY/YceF-dependent Mn2+ efflux, and PerR/Fur-regulated Fe/Mn uptake. This network was accompanied by changes in energy metabolism, activation of oxidative stress response, and Spo0A-mediated biofilm synthesis, all of which contributed to the resilience of the strain under Mn2+ stress. In addition, Mn2+ induced biofilm formation enhanced the microplastic adsorption capacity of strain A260, enabling the simultaneous removal of Mn2+ and microplastics. Strain A260 achieved 97 % Mn2+ and 96 % microplastic removal at pH 7 and 37 degrees C within 14 days, and exhibited strong adaptability to pH and temperature variations. Thus, Bacillus sp. A260 serves as a robust model for studying microbial metal resistance and is a promising candidate for the simultaneous bioremediation of Mn2+ and microplastic contaminants in aquatic environments. |
| WOS关键词 | SUBTILIS ; PERR |
| 资助项目 | Taishan Scholars Program[tsqn202312264] ; Institute of Oceanology of Chinese Academy of Sciences |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001546856000002 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203137]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 通讯作者 | Sun, Chaomin; Wu, Shimei |
| 作者单位 | 1.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China 3.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao, Peoples R China 4.Qingdao Univ, Coll Life Sci, Qingdao, Peoples R China 5.Chinese Acad Sci, CAS Key Lab Expt Marine Biol, Qingdao, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, Zihao,Zheng, Rikuan,Sun, Chaomin,et al. Resistance and removal mechanisms of deep-sea Bacillus sp. A260 in mitigating Mn2+and microplastic pollution[J]. JOURNAL OF HAZARDOUS MATERIALS,2025,496:13. |
| APA | Gu, Zihao,Zheng, Rikuan,Sun, Chaomin,&Wu, Shimei.(2025).Resistance and removal mechanisms of deep-sea Bacillus sp. A260 in mitigating Mn2+and microplastic pollution.JOURNAL OF HAZARDOUS MATERIALS,496,13. |
| MLA | Gu, Zihao,et al."Resistance and removal mechanisms of deep-sea Bacillus sp. A260 in mitigating Mn2+and microplastic pollution".JOURNAL OF HAZARDOUS MATERIALS 496(2025):13. |
入库方式： OAI收割
来源：海洋研究所
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