PMID- 31421332 OWN - NLM STAT- MEDLINE DCOM- 20191203 LR - 20191203 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 695 DP - 2019 Dec 10 TI - Effects of decabromodiphenyl ether on activity, abundance, and community composition of phosphorus mineralizing bacteria in eutrophic lake sediments. PG - 133785 LID - S0048-9697(19)33726-X [pii] LID - 10.1016/j.scitotenv.2019.133785 [doi] AB - Polybrominated diphenyl ethers (PBDEs) are typical persistent organic pollutants (POPs) in the environment. However, little is known about their effects on phosphorus mineralizing bacteria (PMB) in eutrophic lake sediments, despite the critical role of PMB in phosphorus (P) biogeochemical cycling. In this study, we carried out a 60-day microcosm experiment to understand the effects of 2 and 20 mg kg(-1) dry weight decabromodiphenyl ether (BDE-209) on the activity, abundance, diversity, and community composition of PMB in the sediment of Taihu Lake, a typical eutrophic lake in China. The results showed that BDE-209 contamination, regardless of the contamination levels, significantly increased the orthophosphate concentration in overlying water and available phosphorus concentration in sediments on day 60. Such increases may be explained by the stimulatory effects of BDE-209 on alkaline phosphatase (ALP) activity and PMB abundance. Moreover, based on Miseq sequencing of the phoD gene encoding ALP, Actinobacteria was the dominant PMB phylum in all treatments, and BDE-209 significantly increased the diversity of PMB and altered their community composition. In particular, the relative abundances of some PMB genera such as Bradyrhizobium were increased significantly after 60 days of the High treatment. A co-occurrence network analysis further revealed that the high level of BDE-209 contamination strengthened the connectivity and interspecific co-operative relationships in the PMB community. These results will help us to understand the effects of POPs on P biogeochemical cycling in eutrophic lakes and the associated microbial mechanisms. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Chen, Juan AU - Chen J AD - Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. FAU - Gao, Han AU - Gao H AD - Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. FAU - Wang, Peifang AU - Wang P AD - Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. Electronic address: pfwang2005@hhu.edu.cn. FAU - Wang, Chao AU - Wang C AD - Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. FAU - Sun, Shenghao AU - Sun S AD - Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. FAU - Wang, Xun AU - Wang X AD - Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, 1 Xikang Road, Nanjing 210098, PR China. LA - eng PT - Journal Article DEP - 20190805 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Water Pollutants, Chemical) RN - N80BQ29A0H (decabromobiphenyl ether) SB - IM MH - Bacteria MH - China MH - *Environmental Monitoring MH - Eutrophication MH - Halogenated Diphenyl Ethers/*analysis MH - Lakes/microbiology MH - Water Pollutants, Chemical/*analysis OTO - NOTNLM OT - Alkaline phosphatase activity OT - Bacterial community composition OT - Eutrophic lake sediment OT - Phosphorus mineralizing bacteria OT - Polybrominated diphenyl ethers EDAT- 2019/08/20 06:00 MHDA- 2019/12/04 06:00 CRDT- 2019/08/18 06:00 PHST- 2019/05/29 00:00 [received] PHST- 2019/08/03 00:00 [revised] PHST- 2019/08/04 00:00 [accepted] PHST- 2019/08/20 06:00 [pubmed] PHST- 2019/12/04 06:00 [medline] PHST- 2019/08/18 06:00 [entrez] AID - S0048-9697(19)33726-X [pii] AID - 10.1016/j.scitotenv.2019.133785 [doi] PST - ppublish SO - Sci Total Environ. 2019 Dec 10;695:133785. doi: 10.1016/j.scitotenv.2019.133785. Epub 2019 Aug 5.