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Fang S, Geng Y, Wang L, Zeng J, Zhang S, Wu Y, Lin X. Coupling between 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47) debromination and methanogenesis in anaerobic soil microcosms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169831. [PMID: 38185166 DOI: 10.1016/j.scitotenv.2023.169831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/15/2023] [Accepted: 12/30/2023] [Indexed: 01/09/2024]
Abstract
Polybrominated diphenyl ethers (PBDEs) are persistent pollutants that may undergo microbial-mediated debromination in anoxic environments, where diverse anaerobic microbes such as methanogenic archaea co-exist. However, current understanding of the relations between PBDE pollution and methanogenic process is far from complete. To address this knowledge gap, a series of anaerobic soil microcosms were established. BDE-47 (2, 2', 4, 4'-tetrabromodiphenyl ether) was selected as a model pollutant, and electron donors were supplied to stimulate the activity of anaerobes. Debromination and methane production were monitored during the 12 weeks incubation, while obligate organohalide-respiring bacteria (OHRBs), methanogenic, and the total bacterial communities were examined at week 7 and 12. The results demonstrated slow debromination of BDE-47 in all microcosms, with considerable growth of Dehalococcoides and Dehalogenimonas over the incubation observed in most BDE-47 spiked treatments. In addition, the accumulation of intermediate metabolites positively correlated with the abundance of Dehalogenimonas at week 7, suggesting potential role of these OHRBs in debromination. Methanosarcinaceae were identified as the primary methanogenic archaea, and their abundance were correlated with the production of debrominated metabolites at week 7. Furthermore, it was observed for the first time that BDE-47 considerably enhanced methane production and increased the abundance of mcrA genes, highlighting the potential effects of PBDE pollution on climate change. This might be related to the inhibition of reductive N- and S-transforming microbes, as revealed by the quantitative microbial element cycling (QMEC) analysis. Overall, our findings shed light on the intricate interactions between PBDE and methanogenic processes, and contribute to a better understanding of the environmental fate and ecological implication of PBDE under anaerobic settings.
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Affiliation(s)
- Shasha Fang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450046, China; Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yue Geng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Lu Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China
| | - Jun Zeng
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
| | - Shimin Zhang
- College of Life Sciences, Henan Agricultural University, Zhengzhou 450046, China.
| | - Yucheng Wu
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Xiangui Lin
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
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Bao J, Catucci G, Valetti F. Biofuels Production from Renewable Resources. Biotechnol Appl Biochem 2020; 67:711-713. [DOI: 10.1002/bab.2046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 09/29/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Jie Bao
- East China University of Science and Technology, Shanghai, People's Republic of China
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Cavaleiro AJ, Guedes AP, Silva SA, Arantes AL, Sequeira JC, Salvador AF, Sousa DZ, Stams AJM, Alves MM. Effect of Sub-Stoichiometric Fe(III) Amounts on LCFA Degradation by Methanogenic Communities. Microorganisms 2020; 8:microorganisms8091375. [PMID: 32906848 PMCID: PMC7564256 DOI: 10.3390/microorganisms8091375] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/01/2020] [Accepted: 09/04/2020] [Indexed: 02/06/2023] Open
Abstract
Long-chain fatty acids (LCFA) are common contaminants in municipal and industrial wastewater that can be converted anaerobically to methane. A low hydrogen partial pressure is required for LCFA degradation by anaerobic bacteria, requiring the establishment of syntrophic relationships with hydrogenotrophic methanogens. However, high LCFA loads can inhibit methanogens, hindering biodegradation. Because it has been suggested that anaerobic degradation of these compounds may be enhanced by the presence of alternative electron acceptors, such as iron, we investigated the effect of sub-stoichiometric amounts of Fe(III) on oleate (C18:1 LCFA) degradation by suspended and granular methanogenic sludge. Fe(III) accelerated oleate biodegradation and hydrogenotrophic methanogenesis in the assays with suspended sludge, with H2-consuming methanogens coexisting with iron-reducing bacteria. On the other hand, acetoclastic methanogenesis was delayed by Fe(III). These effects were less evident with granular sludge, possibly due to its higher initial methanogenic activity relative to suspended sludge. Enrichments with close-to-stoichiometric amounts of Fe(III) resulted in a microbial community mainly composed of Geobacter, Syntrophomonas, and Methanobacterium genera, with relative abundances of 83-89%, 3-6%, and 0.2-10%, respectively. In these enrichments, oleate was biodegraded to acetate and coupled to iron-reduction and methane production, revealing novel microbial interactions between syntrophic LCFA-degrading bacteria, iron-reducing bacteria, and methanogens.
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Affiliation(s)
- Ana J. Cavaleiro
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
- Correspondence: ; Tel.: +35-1253604423
| | - Ana P. Guedes
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Sérgio A. Silva
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Ana L. Arantes
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - João C. Sequeira
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Andreia F. Salvador
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
| | - Diana Z. Sousa
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
- Laboratory of Microbiology, Wageningen University & Research, 6708 WE Wageningen, The Netherlands
| | - Alfons J. M. Stams
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
- Laboratory of Microbiology, Wageningen University & Research, 6708 WE Wageningen, The Netherlands
| | - M. Madalena Alves
- Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; (A.P.G.); (S.A.S.); (A.L.A.); (J.C.S.); (A.F.S.); (D.Z.S.); (A.J.M.S.); (M.M.A.)
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