YIC-IR  > 海岸带生物学与生物资源利用重点实验室
How iron-bearing minerals affect the biological reduction of Sb(V): A newly discovered function of nitrate reductase
Zhang, Haikun; Sun, Yanyu; Cheng, Manman; Sui, Xiaori; Huang, Yanyan; Hu, Xiaoke
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
2023-12-15
Volume904Pages:11
KeywordAntimony Iron-bearing minerals Biological reduction Nitrate reductase Inhibition
DOI10.1016/j.scitotenv.2023.167001
Corresponding AuthorZhang, Haikun(hkzhang@yic.ac.cn) ; Hu, Xiaoke(xkhu@yic.ac.cn)
AbstractAs a toxic element of global concern, the elevated concentration of antimony (Sb) in the environment has attracted increasing attention. Microorganisms have been reported as important driving forces for Sb transformation. Iron (Fe) is the most important metal associated element of Sb, however, how Fe-bearing minerals affect the biological transformation of Sb is still unclear. In this study, the effects of Fe-bearing minerals on biological Sb(V) reduction were investigated by employing a marine Shewanella sp. CNZ-1 (CNZ-1). Our results showed that the presence of hematite, magnetite and ferrihydrite (1 g/L) resulted in a decrease in Sb(III) concentration of similar to 19-31 % compared to the Fe(III)-minerals free system. The calculated Sb(V) reduction rates are 0.0256 (R-2 0.71), 0.0389 (R-2 0.87), 0.0299 (R-2 0.96) and 0.0428 (R-2 0.95) h(-1) in the hematite-, magnetite-, ferrihydrite-supplemented and Fe(III)-minerals free systems, respectively. The cube-shaped Sb2O3 was characterized as a reductive product by using XRD, XPS, FTIR, TG and SEM approaches. Differential proteomic analysis showed that flagellar protein, cytochrome c, electron transfer flavoprotein, nitrate reductase and polysulfide reductase (up-regulation >1.5-fold, p value <0.05) were supposed to be included in the electron transport pathway of Sb(V) reduction by strain CNZ-1, and the key role of nitrate reductases was further highlighted during this reaction process based on the RT-qPCR and confirmatory experiments. Overall, these findings are beneficial to understand the environmental fate of Sb in the presence of Fe-bearing minerals and provide guidance in developing the bacteria/enzyme-mediated control strategy for Sb pollution.
Funding OrganizationNational Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; CSC Scholarship
Indexed BySCI
Language英语
WOS KeywordANTIMONY ; FERRIHYDRITE ; SB(III) ; PHOTOOXIDATION ; ADSORPTION ; BACTERIUM ; SEDIMENTS ; GROWTH ; WATERS ; SOILS
WOS Research AreaEnvironmental Sciences & Ecology
WOS IDWOS:001079622100001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/32804
Collection海岸带生物学与生物资源利用重点实验室
海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
Corresponding AuthorZhang, Haikun; Hu, Xiaoke
AffiliationChinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Haikun,Sun, Yanyu,Cheng, Manman,et al. How iron-bearing minerals affect the biological reduction of Sb(V): A newly discovered function of nitrate reductase[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,904:11.
APA Zhang, Haikun,Sun, Yanyu,Cheng, Manman,Sui, Xiaori,Huang, Yanyan,&Hu, Xiaoke.(2023).How iron-bearing minerals affect the biological reduction of Sb(V): A newly discovered function of nitrate reductase.SCIENCE OF THE TOTAL ENVIRONMENT,904,11.
MLA Zhang, Haikun,et al."How iron-bearing minerals affect the biological reduction of Sb(V): A newly discovered function of nitrate reductase".SCIENCE OF THE TOTAL ENVIRONMENT 904(2023):11.
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