PMID- 38016312 OWN - NLM STAT- MEDLINE DCOM- 20240208 LR - 20240213 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 465 DP - 2024 Mar 5 TI - Novel insights into aerobic 17beta-estradiol degradation by enriched microbial communities from mangrove sediments. PG - 133045 LID - S0304-3894(23)02329-4 [pii] LID - 10.1016/j.jhazmat.2023.133045 [doi] AB - Various persistent organic pollutants (POPs) including estrogens are often enriched in mangrove regions. This research investigated the estrogens pollution levels in six mangroves located in the Southern China. The estrogen levels were found to be in the range of 5.3-24.9 ng/g dry weight, suggesting that these mangroves had been seriously contaminated. The bacterial communities under estrogen stress were further enriched by supplementing 17beta-estradiol (E2) as the sole carbon source. The enriched bacterial communities showed an excellent E2 degradation capacity > 95 %. These communities were able to transform E2 into estrone (E1), 4-hydroxy-estrone, and keto-estrone, etc. 16 S rDNA sequencing and metagenomics analysis revealed that bacterial taxa Oleiagrimonas, Pseudomonas, Terrimonas, and Nitratireductor etc. were the main contributors to estrogen degradation. Moreover, the genes involved in E2 degradation were enriched in the microbial communities, including the genes encoding 17beta-hydroxysteroid dehydrogenase, estrone 4-hydroxylase, etc. Finally, the analyses of functional genes and binning genomes demonstrated that E2 was degraded by bacterial communities via dehydrogenation into E1 by 17beta-hydroxysteroid dehydrogenase. E1 was then catabolically converted to 3aalpha-H-4alpha(3'-propanoate)- 7abeta-methylhexahydro-1,5-indanedione via 4,5-seco pathway. Alternatively, E1 could also be hydroxylated to keto-estrone, followed by B-ring cleavage. This study provides novel insights into the biodegradation of E2 by the bacterial communities in estrogen-contaminated mangroves. CI - Copyright (c) 2023. Published by Elsevier B.V. FAU - Zhang, Shan AU - Zhang S AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Ye, Xueying AU - Ye X AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China; School of Life Sciences, Huizhou University, Huizhou 510607, China. FAU - Lin, Xianbin AU - Lin X AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Zeng, Xiangwei AU - Zeng X AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Meng, Shanshan AU - Meng S AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Luo, Wenqi AU - Luo W AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Yu, Fei AU - Yu F AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Peng, Tao AU - Peng T AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Huang, Tongwang AU - Huang T AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. FAU - Li, Jin AU - Li J AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China; College of Life Sciences, China West Normal University, Nanchong 637002, China. Electronic address: jinli2023@cwnu.edu.cn. FAU - Hu, Zhong AU - Hu Z AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, China. Electronic address: hzh@stu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231124 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 2DI9HA706A (Estrone) RN - 4TI98Z838E (Estradiol) RN - 0 (Estrogens) SB - IM MH - *Estrone/metabolism MH - *Estradiol/metabolism MH - Estrogens/analysis MH - Biodegradation, Environmental MH - Bacteria/metabolism OTO - NOTNLM OT - 17beta-estradiol degradation OT - Estrogen contamination OT - Mangroves OT - Microbial community COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/11/29 00:42 MHDA- 2024/02/08 06:42 CRDT- 2023/11/28 18:07 PHST- 2023/08/04 00:00 [received] PHST- 2023/10/13 00:00 [revised] PHST- 2023/11/18 00:00 [accepted] PHST- 2024/02/08 06:42 [medline] PHST- 2023/11/29 00:42 [pubmed] PHST- 2023/11/28 18:07 [entrez] AID - S0304-3894(23)02329-4 [pii] AID - 10.1016/j.jhazmat.2023.133045 [doi] PST - ppublish SO - J Hazard Mater. 2024 Mar 5;465:133045. doi: 10.1016/j.jhazmat.2023.133045. Epub 2023 Nov 24.