气候变化领域集成服务门户(CCPortal): Coupling between 2, 2′, 4, 4′-tetrabromodiphenyl ether (BDE-47) debromination and methanogenesis in anaerobic soil microcosms

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DOI	10.1016/j.scitotenv.2023.169831
	Coupling between 2, 2′, 4, 4′-tetrabromodiphenyl ether (BDE-47) debromination and methanogenesis in anaerobic soil microcosms
	Fang, Shasha; Geng, Yue; Wang, Lu; Zeng, Jun; Zhang, Shimin; Wu, Yucheng; Lin, Xiangui
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	914
卷号	914
英文摘要	Polybrominated diphenyl ethers (PBDEs) are persistent pollutants that may undergo microbial-mediated debromination in anoxic environments, where diverse anaerobic microbes such as methanogenic archaea coexist. 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. BDE47 (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.
英文关键词	PBDEs; Methane; Organohalide-respiring bacteria; Methanogens; Dehalogenation
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001154805900001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302442
作者单位	Henan Agricultural University; Chinese Academy of Sciences; Nanjing Institute of Soil Science, CAS; Ministry of Agriculture & Rural Affairs; Chinese Academy of Agricultural Sciences; Agro-Environmental Protection Institute, CAAS
推荐引用方式 GB/T 7714	Fang, Shasha,Geng, Yue,Wang, Lu,等. Coupling between 2, 2′, 4, 4′-tetrabromodiphenyl ether (BDE-47) debromination and methanogenesis in anaerobic soil microcosms[J],2024,914.
APA	Fang, Shasha.,Geng, Yue.,Wang, Lu.,Zeng, Jun.,Zhang, Shimin.,...&Lin, Xiangui.(2024).Coupling between 2, 2′, 4, 4′-tetrabromodiphenyl ether (BDE-47) debromination and methanogenesis in anaerobic soil microcosms.SCIENCE OF THE TOTAL ENVIRONMENT,914.
MLA	Fang, Shasha,et al."Coupling between 2, 2′, 4, 4′-tetrabromodiphenyl ether (BDE-47) debromination and methanogenesis in anaerobic soil microcosms".SCIENCE OF THE TOTAL ENVIRONMENT 914(2024).