文献类型：期刊文献

英文题名：Biochar modification accelerates soil atrazine biodegradation by altering bacterial communities, degradation-related genes and metabolic pathways

作者：Chen, Yijie[1];Zhen, Zhen[1];Wu, Weilong[1];Yang, Changhong[1];Yang, Guiqiong[1];Li, Xiaofeng[1];Li, Qing[1];Zhong, Xiaolan[1];Yin, Junyong[1];Lin, Zhong[2,3,7];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;[7]Guangdong Ocean Univ, Chem & Environm Sci, Zhanjiang 524088, Peoples R China

年份：2024

卷号：479

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：SCI-EXPANDED(收录号：WOS:001312255800001)、、EI(收录号：20243616996603)、Scopus(收录号：2-s2.0-85202914702)、WOS

基金：This work was financially supported by National Natural Science Foundation of China (41907033, 41977125) , Natural Science Founda-tion of Guangdong Province (2024A1515010766, 2023A1515012225, 2022A1515010867, 2022A1515010630) and Shenzhen Fundamental Research Program (JCYJ20220818103609020) . DZ acknowledges sup-port from Chinese Government's Thousand Talents Plan for Young Professionals.

语种：英文

外文关键词：Atrazine; Modified biochar; Metabolic pathway; Bacterial community; Functional genes

外文摘要：Atrazine is one of the most used herbicides, posing non-neglectable threats to ecosystem and human health. This work studied the performance and mechanisms of surface-modified biochar in accelerating atrazine biodegradation by exploring the changes in atrazine metabolites, bacterial communities and atrazine degradation-related genes. Among different types of biochar, nano-hydroxyapatite modified biochar achieved the highest degradation efficiency (85.13 %), mainly attributing to the increasing pH, soil organic matter, soil humus, and some enriched indigenous bacterial families of Bradyrhizobiaceae, Rhodospirillaceae, Methylophilaceae, Micrococcaceae, and Xanthobacteraceae. The abundance of 4 key atrazine degradation-related genes (atzA, atzB, atzC and triA) increased after biochar amendment, boosting both dechlorination and dealkylation pathways in atrazine metabolism. Our findings evidenced that biochar amendment could accelerate atrazine biodegradation by altering soil physicochemical properties, microbial composition and atrazine degradation pathways, providing clues for improving atrazine biodegradation performance at contaminated sites.