Endogenous N-acyl homoserine lactones improve the efficiency of swine wastewater treatment by regulating biological activity and functional microbiota in microalgae-bacteria system
文献类型：期刊论文
| 作者 | Ma, Chengxiao2; Zhang, Yitong2; Xu, Zhenting2; Qu, Wenying2,4; Ho, Shih-Hsin1; Li, Junfeng2,4; Li, Fadong2,3 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2025-09-15 |
| 卷号 | 520页码:165894 |
| 关键词 | Scenedesmus quadricauda Brevundimonas intermedia N-acyl-homoserine lactones (AHLs) Swine wastewater treatment Nitrogen metabolism pathway Sustainable treatment |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2025.165894 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | The influence and the underlying mechanism of endogenous N-acyl-homoserine lactones (AHLs) on microalgaebacteria (MB) system treating swine wastewater remain unclear. In this study, Scenedesmus quadricauda BLMCX5 and Brevundimonas intermedia BMMCX3 were utilized to construct a MB system, and then vanillin was added to establish a microalgae-bacteria-vanillin (MBV) system as control. The results indicated C6-HSL and 3-oxo-C10-HSL as the main endogenous AHLs. Endogenous AHLs alleviated oxidative stress by enhancing antioxidant enzyme activity and promoting microalgal growth and photosynthetic efficiency. The microalgal biomass and chlorophyll a concentration in MB system (4.51 g/L and 7.79 mg/L, respectively) were significantly higher than MBV system (3.43 g/L and 6.66 mg/L). In addition, MB system demonstrated higher removal efficiencies of nitrogen and phosphorus (>99.6 %) and chemical oxygen demand (87.46 %) than MBV system (87.60 %-91.46 %, >99.3 % and 81.12 %, respectively). Microbial community analysis determined the reduction of antibiotic resistance genes loads and migration. Nitrogen metabolism pathway analysis revealed ammonia assimilation as the primary nitrogen removal pathway. The expression of nitrogen transporters and ammonia assimilation-related genes in microalgae significantly increased in MB system. Furthermore, the dissimilatory nitrate reduction and organic nitrogen hydrolysis in MB system, and the denitrification in MBV system, were also important. AHLs mediated by Brevundimonas and Acinetobacter directly affected nitrogen metabolism or indirectly promoted the relative abundance of genes associated with nitrogen metabolism by enriching key functional bacteria. This study revealed role of bacteria-mediated AHLs in improving the wastewater treatment efficiency of MB systems, and provided a theoretical foundation for application of microalgal bacterial technology. |
| URL标识 | 查看原文 |
| WOS关键词 | GROWTH ; REMOVAL |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001535313000008 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215526]  |
| 专题 | 禹城站农业生态系统研究中心_外文论文 |
| 通讯作者 | Qu, Wenying; Li, Junfeng; Li, Fadong |
| 作者单位 | 1.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China; 2.Shihezi Univ, Coll Water Conservancy & Architecture Engn, Shihezi 832000, Xinjiang, Peoples R China; 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Key Lab Cold & Arid Reg Ecohydraul Engn Xinjiang P, Shihezi 832000, Xinjiang, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ma, Chengxiao,Zhang, Yitong,Xu, Zhenting,et al. Endogenous N-acyl homoserine lactones improve the efficiency of swine wastewater treatment by regulating biological activity and functional microbiota in microalgae-bacteria system[J]. CHEMICAL ENGINEERING JOURNAL,2025,520:165894. |
| APA | Ma, Chengxiao.,Zhang, Yitong.,Xu, Zhenting.,Qu, Wenying.,Ho, Shih-Hsin.,...&Li, Fadong.(2025).Endogenous N-acyl homoserine lactones improve the efficiency of swine wastewater treatment by regulating biological activity and functional microbiota in microalgae-bacteria system.CHEMICAL ENGINEERING JOURNAL,520,165894. |
| MLA | Ma, Chengxiao,et al."Endogenous N-acyl homoserine lactones improve the efficiency of swine wastewater treatment by regulating biological activity and functional microbiota in microalgae-bacteria system".CHEMICAL ENGINEERING JOURNAL 520(2025):165894. |
入库方式： OAI收割
来源：地理科学与资源研究所
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