PMID- 37839372 OWN - NLM STAT- MEDLINE DCOM- 20231129 LR - 20231129 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 462 DP - 2024 Jan 15 TI - Comparative genomics reveals evidence of polycyclic aromatic hydrocarbon degradation in the moderately halophilic genus Pontibacillus. PG - 132724 LID - S0304-3894(23)02008-3 [pii] LID - 10.1016/j.jhazmat.2023.132724 [doi] AB - Polycyclic aromatic hydrocarbons (PAHs) are a common class of persistent organic pollutants (POPs) that are widely distributed in various environments and pose significant threats to both environmental and human health. The genus Pontibacillus, a type of moderately halophilic bacteria, has demonstrated potential for biodegrading aromatic compounds in high-salinity environments. However, no previous study has comprehensively investigated the PAH degradation mechanisms and environmental adaptability in the genus Pontibacillus. In this study, we sequenced the whole genome of the PAH-degrading strain Pontibacillus chungwhensis HN14 and conducted a comparative genomics analysis of genes associated with PAH degradation, as well as salt and arsenic tolerance using ten other Pontibacillus sp. strains. Here, we elucidated potential degradation pathways for benzo[a]pyrene and phenanthrene, which were initiated by cytochrome P450 monooxygenases, in most Pontibacillus strains. Moreover, four Pontibacillus strains were selected to investigate the biodegradation of benzo[a]pyrene and phenanthrene under high-salt (5% NaCl) stress, and all four strains exhibited exceptional degradation abilities. The results of comparative genomics and phenotypic analyses demonstrate that the genus Pontibacillus have the potential to degrade polycyclic aromatic hydrocarbons in high-salinity environments, thus providing valuable insights for biodegradation in extreme environments. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - Yang, Haichen AU - Yang H AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. FAU - Qian, Zhihui AU - Qian Z AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. FAU - Liu, Yongjin AU - Liu Y AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. FAU - Yu, Fei AU - Yu F AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. FAU - Huang, Tongwang AU - Huang T AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. FAU - Zhang, Bing AU - Zhang B AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. FAU - Peng, Tao AU - Peng T AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China. Electronic address: tpeng@stu.edu.cn. FAU - Hu, Zhong AU - Hu Z AD - Department of Biology, Shantou University, Shantou, Guangdong 515063, PR China; Guangdong Research Center of Offshore Environmental Pollution Control Engineering, Shantou University, Shantou 515063, Guangdong, PR China. Electronic address: hzh@stu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231005 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 3417WMA06D (Benzo(a)pyrene) RN - 448J8E5BST (phenanthrene) RN - 0 (Phenanthrenes) SB - IM MH - Humans MH - *Polycyclic Aromatic Hydrocarbons/metabolism MH - Benzo(a)pyrene MH - *Phenanthrenes MH - Biodegradation, Environmental MH - Genomics OTO - NOTNLM OT - Biodegradation OT - Genomic traits OT - PAHs OT - Pontibacillus OT - Salinity tolerance 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- 2023/10/16 00:41 MHDA- 2023/11/29 06:42 CRDT- 2023/10/15 18:11 PHST- 2023/06/13 00:00 [received] PHST- 2023/09/22 00:00 [revised] PHST- 2023/10/04 00:00 [accepted] PHST- 2023/11/29 06:42 [medline] PHST- 2023/10/16 00:41 [pubmed] PHST- 2023/10/15 18:11 [entrez] AID - S0304-3894(23)02008-3 [pii] AID - 10.1016/j.jhazmat.2023.132724 [doi] PST - ppublish SO - J Hazard Mater. 2024 Jan 15;462:132724. doi: 10.1016/j.jhazmat.2023.132724. Epub 2023 Oct 5.