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Journal of Tropical Oceanography

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Isolation, identification and genomic characteristics of a coral-derived Benzophenone-3-degrading Sphingopyxis terrae SCSIO 90395

LIU Mingding1, 2, 3, 4, CAI Yongchao2, 3, LI Jie2, 3, LIU Qing2, 3, ZHANG Jian2, 3, LYU Lina2, 3, SU Hongfei1, 4   

  1. 1. School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China;

    2. State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China;

    3. Sanya National Marine Ecosystem Research Station, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya 572000, China;

    4. School of Marine Sciences, Guangxi University, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Nanning 530004, China



  • Received:2025-10-29 Revised:2025-12-01 Accepted:2025-12-09
  • Supported by:

    National Natural Science Foundation of China (U23A2036); Guangxi Science and Technology Program (GuiKe AD25069075); The program of State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences (SKLTO2025PT002)

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Abstract: Benzophenone-3 (2-Hydroxy-4-methoxybenzophenone, BP-3) is an organic ultraviolet (UV) filter widely used in sunscreens and personal care products. As an emerging marine contaminant, BP-3 bioaccumulates in coral reef ecosystems, posing possible ecological risks. To explore its biodegradation pathways, a BP-3 degrading bacteria, Sphingopyxis terrae SCSIO 90395, was isolated from the coral Galaxea fascicularis collected in the South China Sea. The strain degraded approximately 30% of BP-3 within 48 hours when provided as the sole carbon source. Genome analysis (3.89 Mb, 64.81%) revealed 3732 putative protein-coding sequences, including those associated with aromatic compound metabolism and cytochrome P450 enzymes. Molecular docking suggested that a cytochrome P450 enzyme encoded by gene0737 has high binding affinity to BP-3, implying a potential role in its biodegradation. These findings provided a novel microbial resource and establish a theoretical foundation for developing coral-associated microbial strategies for BP-3 bioremediation.

Key words: coral-associated bacteria, Benzophenone-3, microbial degradation, genome analysis