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A sulfur packed-bed reactor was employed, with lime mud-an industrial by-product, serving as an alkalinity source. The concentration of Sulfamethoxazole (SMM) was gradually increased to investigate the microscopic response mechanisms of sulfur autotrophic denitrifying (SADN) microbial communities under SMM stress. The results indicated that the SADN microbial communities could utilize the alkalinity provided by lime mud to achieve efficient nitrogen removal. Under low-concentration SMM stress, the system remained stable, Thiobacillus was enriched with removal efficiencies of nitrate (NO3--N) and SMM exceeding 99%. Under the impact of high-concentration SMM, the abundance of Thiobacillus in the system decreased, and the nitrogen removal performance fluctuated. However, the dominant bacteria in the system regulated the synthesis of hydrophobic amino acids glutamic acid (Glu) and proline (Pro) by increasing the secretion of C6-HSL, promoted the synthesis of tightly bound protein (TB-PN) in extracellular polymer (EPS), maintained the tight secondary structure of the protein, and thus promoted the aggregation of floc sludge. Under this regulation, the denitrification performance was recovered, and the SMM removal rate reached 60%. Additionally, under high-concentration SMM stress, unclassified_f__Rhodocyclaceae utilized the carbon sources secreted by apoptotic autotrophic bacteria and EPS to synergize with Ferritrophicum and Thiobacillus for efficient nitrogen removal.

, authors=Kai-wen HUANG1, Xin ZHANG1, Yu-chen ZHOU1, Yi-jie ZHOU1, Shuo WANG1, 2, *, Ji LI1, 2, authorsList=Kai-wen HUANG, Xin ZHANG, Yu-chen ZHOU, Yi-jie ZHOU, Shuo WANG, Ji LI, authorCompany=null, correspAuthors=Shuo WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917660954030437, articleId=1314917660337467747, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=磺胺间甲氧嘧啶胁迫下硫自养反硝化菌群的响应机制, columnId=1240689621210820752, journalTitle=中国环境科学, columnName=新污染物, runingTitle=null, highlight=null, articleAbstract=

采用硫填料床反应器,以工业废弃物白泥作为碱度源,逐步提升磺胺间甲氧嘧啶(SMM)浓度,探究硫自养反硝化(SADN)菌群在SMM胁迫下的微观响应机制.结果表明,SADN菌群能够利用白泥提供的碱度进行高效脱氮,在低浓度SMM胁迫下系统保持稳定,Thiobacillus菌群得到富集,硝态氮(NO3--N)及SMM去除率达99%以上.在高浓度SMM冲击下,系统中Thiobacillus菌群丰度降低,脱氮性能有所波动.但系统中优势菌群通过增加C6-HSL分泌,调控谷氨酸(Glu)和脯氨酸(Pro)等疏水性氨基酸合成,促进胞外聚合物(EPS)中紧密结合型蛋白(TB-PN)的合成,维持蛋白质二级结构紧密,从而促进污泥絮体团聚.在此调控下,系统脱氮性能恢复,SMM去除率维持在60%以上.此外,在高浓度SMM胁迫下,unclassified_f__Rhodocyclaceae借助凋亡的自养菌群及EPS分泌的碳源协同Ferritrophicum、Thiobacillus等SADN菌群进行高效脱氮.

, authors=黄凯文1, 张欣1, 周雨晨1, 周一杰1, 王硕1, 2, *, 李激1, 2, authorsList=黄凯文, 张欣, 周雨晨, 周一杰, 王硕, 李激, authorCompany=null, correspAuthors=王硕, authorNote=

黄凯文(1999-),男,东苏苏州人,硕士研究生,主要研究方向废水处理工程.发表论文2篇..

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* 责任作者,副研究员,
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黄凯文(1999-),男,东苏苏州人,硕士研究生,主要研究方向废水处理工程.发表论文2篇..

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黄凯文(1999-),男,东苏苏州人,硕士研究生,主要研究方向废水处理工程.发表论文2篇..

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磺胺间甲氧嘧啶胁迫下硫自养反硝化菌群的响应机制
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黄凯文 1 , 张欣 1 , 周雨晨 1 , 周一杰 1 , 王硕 1, 2, * , 李激 1, 2
中国环境科学 | 新污染物 2025,45(9): 5227-5235
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中国环境科学 |新污染物 2025 , 45 (9) : 5227 -5235
磺胺间甲氧嘧啶胁迫下硫自养反硝化菌群的响应机制
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黄凯文1 , 张欣1, 周雨晨1, 周一杰1, 王硕1, 2, * , 李激1, 2
作者信息
  • 1.江南大学环境与生态学院,江苏省厌氧生物技术重点实验室,江苏 无锡 214122
  • 2.江苏省高校水处理技术与材料协同创新中心,江苏 苏州 215009
通讯作者:
* 责任作者,副研究员,
作者简介:

黄凯文(1999-),男,东苏苏州人,硕士研究生,主要研究方向废水处理工程.发表论文2篇..

Response mechanisms of sulfur autotrophic denitrifying microbial communities under the stress of sulfamethoxazole
Kai-wen HUANG1 , Xin ZHANG1, Yu-chen ZHOU1, Yi-jie ZHOU1, Shuo WANG1, 2, * , Ji LI1, 2
Affiliations
  • 1.Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China
  • 2.Jiangsu College Water Treatment Technology and Material Collaborative Innovation Center, Suzhou 215009, China
出版时间: 2025-09-20
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采用硫填料床反应器,以工业废弃物白泥作为碱度源,逐步提升磺胺间甲氧嘧啶(SMM)浓度,探究硫自养反硝化(SADN)菌群在SMM胁迫下的微观响应机制.结果表明,SADN菌群能够利用白泥提供的碱度进行高效脱氮,在低浓度SMM胁迫下系统保持稳定,Thiobacillus菌群得到富集,硝态氮(NO3--N)及SMM去除率达99%以上.在高浓度SMM冲击下,系统中Thiobacillus菌群丰度降低,脱氮性能有所波动.但系统中优势菌群通过增加C6-HSL分泌,调控谷氨酸(Glu)和脯氨酸(Pro)等疏水性氨基酸合成,促进胞外聚合物(EPS)中紧密结合型蛋白(TB-PN)的合成,维持蛋白质二级结构紧密,从而促进污泥絮体团聚.在此调控下,系统脱氮性能恢复,SMM去除率维持在60%以上.此外,在高浓度SMM胁迫下,unclassified_f__Rhodocyclaceae借助凋亡的自养菌群及EPS分泌的碳源协同Ferritrophicum、Thiobacillus等SADN菌群进行高效脱氮.

硫自养反硝化  /  磺胺间甲氧嘧啶  /  胞外聚合物  /  酰化高丝氨酸内酯  /  微观响应

A sulfur packed-bed reactor was employed, with lime mud-an industrial by-product, serving as an alkalinity source. The concentration of Sulfamethoxazole (SMM) was gradually increased to investigate the microscopic response mechanisms of sulfur autotrophic denitrifying (SADN) microbial communities under SMM stress. The results indicated that the SADN microbial communities could utilize the alkalinity provided by lime mud to achieve efficient nitrogen removal. Under low-concentration SMM stress, the system remained stable, Thiobacillus was enriched with removal efficiencies of nitrate (NO3--N) and SMM exceeding 99%. Under the impact of high-concentration SMM, the abundance of Thiobacillus in the system decreased, and the nitrogen removal performance fluctuated. However, the dominant bacteria in the system regulated the synthesis of hydrophobic amino acids glutamic acid (Glu) and proline (Pro) by increasing the secretion of C6-HSL, promoted the synthesis of tightly bound protein (TB-PN) in extracellular polymer (EPS), maintained the tight secondary structure of the protein, and thus promoted the aggregation of floc sludge. Under this regulation, the denitrification performance was recovered, and the SMM removal rate reached 60%. Additionally, under high-concentration SMM stress, unclassified_f__Rhodocyclaceae utilized the carbon sources secreted by apoptotic autotrophic bacteria and EPS to synergize with Ferritrophicum and Thiobacillus for efficient nitrogen removal.

sulfur autotrophic denitrification  /  sulfamethoxazole  /  extracellular polymeric substances  /  acyl-homoserine lactones  /  microscopic response
黄凯文, 张欣, 周雨晨, 周一杰, 王硕, 李激. 磺胺间甲氧嘧啶胁迫下硫自养反硝化菌群的响应机制. 中国环境科学, 2025 , 45 (9) : 5227 -5235 .
Kai-wen HUANG, Xin ZHANG, Yu-chen ZHOU, Yi-jie ZHOU, Shuo WANG, Ji LI. Response mechanisms of sulfur autotrophic denitrifying microbial communities under the stress of sulfamethoxazole[J]. China Environmental Science, 2025 , 45 (9) : 5227 -5235 .
  • 国家重点研发计划项目(2023YFC3207601)
  • 江苏省生态环境监测科研基金资助项目(24A13)
  • 无锡市科技创新创业资金资助项目(M20241005)
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  • 接收时间:2025-02-23
  • 首发时间:2026-10-08
  • 出版时间:2025-09-20
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  • 收稿日期:2025-02-23
基金
国家重点研发计划项目(2023YFC3207601)
江苏省生态环境监测科研基金资助项目(24A13)
无锡市科技创新创业资金资助项目(M20241005)
作者信息
    1.江南大学环境与生态学院,江苏省厌氧生物技术重点实验室,江苏 无锡 214122
    2.江苏省高校水处理技术与材料协同创新中心,江苏 苏州 215009

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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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