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Zhang J, Tang S, Li Y, Zhang J, Peng Y, Peng J, Cen Y, Shi P. Combined metabolomics and proteomics to reveal the mechanism of S. oneidensis MR-1 degradation malathion enhanced by FeO/C. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:135162. [PMID: 39002482 DOI: 10.1016/j.jhazmat.2024.135162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 07/15/2024]
Abstract
Iron oxide @ biochar (FeO/C) promotes bacterial growth and facilitates electron transfer, thereby effectively promoting malathion degradation by Shewanella oneidensis MR-1 (S. oneidensis MR-1). This study elucidated the underlying mechanism of FeO/C-enhanced malathion degradation by S. oneidensis MR-1 through a combination of metabolomics and proteomics analysis. The kinetic fitting results from the degradation experiment indicated that 0.1 g/L FeO/C exerted the most significant enhancement effect on malathion degradation by S. oneidensis MR-1. Observations from Scanning Electron Microscopy and Laser Scanning Confocal Microscopy, along with physiological and biochemical analysis, showed that FeO/C enhanced the growth and oxidative response of S. oneidensis MR-1 under malathion stress. In addition, metabolomics and proteomics analysis revealed an increase in certain electron transfer related metabolites, such as coenzymes, and the upregulation of proteins, including coenzyme A, sdhD, and petC. Overall, spectroscopic analysis suggested that Fe2+, which was reduced from Fe3+ by S. oneidensis MR-1 in FeO/C, promoted electron transfer in S. oneidensis MR-1 to enhance the degradation of malathion. This study offers enhanced strategies for efficient removal of malathion contaminants.
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Affiliation(s)
- Jie Zhang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Shen Tang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin 541004, China
| | - Yanhong Li
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin University of Technology, Guilin 541004, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area (Guilin University of Technology, Guilin 541006, China.
| | - Jing Zhang
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Yuqing Peng
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - JingJing Peng
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Yu Cen
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
| | - Peizhu Shi
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
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