PMID- 29727832 OWN - NLM STAT- MEDLINE DCOM- 20191023 LR - 20191023 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 353 DP - 2018 Jul 5 TI - Identification of biphenyl-metabolising microbes in activated biosludge using cultivation-independent and -dependent approaches. PG - 534-541 LID - S0304-3894(18)30260-7 [pii] LID - 10.1016/j.jhazmat.2018.04.028 [doi] AB - Microbes have important roles in removing organic pollutants in wastewater treatment plants (WWTPs), especially in mineralising recalcitrant persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs). However, the majority of the microorganisms that metabolise these pollutants in situ remain elusive owing to barriers of traditional techniques in unravel yet-to-be-cultivated microbes. In this study, DNA stable-isotope probing (SIP) coupled with high-throughput sequencing was applied to identify the microbes responsible for PCB degradation in the activated biosludge of a WWTP using (13)C-labelled biphenyl (BP). Results of time-course SIP revealed different bacteria and archaea involved in BP metabolism, which dominated the BP-degrading community at different time points. BP degradation by the genera Spartobacteria, Alicyclobacillus, Flavobacterium and the order Cenarchaeales has not been reported previously. The abundance of biphenyl dioxygenase (bphA) genes increased over time and a novel bphA gene was identified from the (13)C-heavy DNA fraction. In addition, three cultivable BP degraders were isolated, but did not participate in BP degradation in situ or contain the identified bphA genes. Taken together, these data reveal the huge potential and important roles of yet-to-be-cultivated microbes responsible for PCB degradation in activated biosludge, providing fundamental knowledge on WWTP management to remove POPs. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Song, Mengke AU - Song M AD - College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. FAU - Jiang, Longfei AU - Jiang L AD - Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. FAU - Zhang, Dayi AU - Zhang D AD - School of Environment, Tsinghua University, Beijing 100084, China. FAU - Luo, Chunling AU - Luo C AD - College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: clluo@gig.ac.cn. FAU - Yin, Hua AU - Yin H AD - College of Environment and Energy, South China University of Technology, Guangzhou 510006, China. FAU - Li, Yongtao AU - Li Y AD - College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China. FAU - Zhang, Gan AU - Zhang G AD - Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180416 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Carbon Isotopes) RN - 0 (DNA Probes) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (Sewage) RN - 0 (Water Pollutants, Chemical) RN - 9007-49-2 (DNA) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - EC 1.13.11.- (Dioxygenases) SB - IM MH - Archaea/metabolism MH - Bacteria/metabolism MH - Carbon Isotopes MH - DNA/genetics MH - DNA Probes MH - Dioxygenases/genetics MH - High-Throughput Nucleotide Sequencing MH - Polychlorinated Biphenyls/*metabolism MH - RNA, Ribosomal, 16S/genetics MH - Sewage/*microbiology MH - Water Pollutants, Chemical/*metabolism OTO - NOTNLM OT - Archaea OT - Bacteria OT - Biphenyl OT - Biphenyl dioxygenase gene OT - Stable-isotope probing (SIP) EDAT- 2018/05/05 06:00 MHDA- 2019/10/24 06:00 CRDT- 2018/05/05 06:00 PHST- 2017/12/09 00:00 [received] PHST- 2018/04/12 00:00 [revised] PHST- 2018/04/13 00:00 [accepted] PHST- 2018/05/05 06:00 [pubmed] PHST- 2019/10/24 06:00 [medline] PHST- 2018/05/05 06:00 [entrez] AID - S0304-3894(18)30260-7 [pii] AID - 10.1016/j.jhazmat.2018.04.028 [doi] PST - ppublish SO - J Hazard Mater. 2018 Jul 5;353:534-541. doi: 10.1016/j.jhazmat.2018.04.028. Epub 2018 Apr 16.