文献类型：期刊文献

英文题名：Mechanisms of Sulfamethoxazole biodegradation in mangrove rhizosphere by metagenomic and metabolic pathways

作者：Yang, Guiqiong[1];Zhen, Zhen[1];Wu, Weilong[1];Yang, Changhong[1];Li, Qing[1];Li, Xiaofeng[1];Yin, Junyong[1];Zhong, Xiaolan[1];Lin, Zhong[2,3];Zhang, Dayi[4,5,6]

机构：[1]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Fac Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Shenzhen Res Inst, Shenzhen 518108, Peoples R China;[4]Jilin Univ, Key Lab Groundwater Resources & Environm, Minist Educ, Changchun 130021, Peoples R China;[5]Jilin Univ, Coll New Energy & Environm, Changchun 130021, Peoples R China;[6]Shenyang Univ, Key Lab Reg Environm & Ecorestorat, Minist Educ, Shenyang 110044, Peoples R China

年份：2025

卷号：37

外文期刊名：ENVIRONMENTAL TECHNOLOGY & INNOVATION

收录：SCI-EXPANDED(收录号：WOS:001413836800001)、、EI(收录号：20245117546880)、Scopus(收录号：2-s2.0-85212038927)、WOS

基金：This work was financially supported by National Natural Science Foundation of China (41907033, 41977125) , Natural Science Foundation of Guangdong Province (2024A1515010766, 2023A1515012225, 2022A1515010630, 2022A1515010867, 2019A1515011948) , Shenzhen Fundamental Research Program (JCYJ20220818103609020) and Science and Technology Program of Shenyang (23-407-3-09) . DZ acknowledges support from Chinese Government's Thousand Talents Plan for Young Professionals.

语种：英文

外文关键词：Sulfamethoxazole; Mangrove rhizosphere; Metabolic pathway; Metagenomic

外文摘要：Sulfamethoxazole (SMX) is extensively employed as an antibiotic, posing significant challenges to both marine ecosystems and human health that cannot be disregarded. In this work, we investigated the performance of mangrove rhizosphere on SMX biodegradation along with the distance to rhizoplane by comprehensively exploring the change in physicochemical properties, SMX metabolites, enriched potential bacterial communities and SMX-degrading genes. Our results exhibited a significant decrease of pH value, and increase of sediment organic matter, low- molecular-weight organic acids and some enriched potential SMX degraders of Nocardioidaceae, Intrasporangiaceae, Geobacteraceae, Bacillaceae, Comamonadaceae, Micromonosporaceae, Burkholderiaceae and Xanthobacteraceae by mangrove rhizoplane, which achieved the best SMX removal efficiency (72.00 %) in the layer with 2-3 mm distance to mangrove rhizoplane. The abundance of SMX-degrading genes (fadA, pcaF, catE, mhpD and mhpE) were increased in mangrove rhizosphere, leading to the change in SMX metabolism, primarily the 4-aminobenzenesulfonic acid pathway. We suggest that the degradation of SMX within mangrove rhizosphere is primarily influenced by physicochemical properties, bacterial community composition and SMX degradation pathways in compartments close to rhizoplane.