Biodegradation of Di-2-Ethylhexyl Phthalate by Mangrove Sediment Microbiome Impacted by Chronic Plastic Waste
Issued Date
2025-02-01
Resource Type
ISSN
14362228
eISSN
14362236
Scopus ID
2-s2.0-85211384665
Pubmed ID
39625614
Journal Title
Marine Biotechnology
Volume
27
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Marine Biotechnology Vol.27 No.1 (2025)
Suggested Citation
Saeng-kla K., Mhuantong W., Termsaithong T., Pinyakong O., Sonthiphand P. Biodegradation of Di-2-Ethylhexyl Phthalate by Mangrove Sediment Microbiome Impacted by Chronic Plastic Waste. Marine Biotechnology Vol.27 No.1 (2025). doi:10.1007/s10126-024-10399-5 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/102853
Title
Biodegradation of Di-2-Ethylhexyl Phthalate by Mangrove Sediment Microbiome Impacted by Chronic Plastic Waste
Corresponding Author(s)
Other Contributor(s)
Abstract
Plastic pollution through the leaching of di(2-ethylhexyl) phthalate (DEHP), a widely used plasticizer, has led to the emergence of mangrove pollution. This study aimed to assess the DEHP removal efficiency of indigenous mangrove sediment microbiomes and identify key DEHP degraders using microcosm construction and metagenomic analysis. During the 35-day incubation period, the indigenous mangrove sediment microbiome, affected by chronic plastic pollution, demonstrated a 99% degradation efficiency of 200 mg/kg DEHP. Spearman’s correlation analysis suggested that Myxococcales, Methyloligellaceae, Mycobacterium, and Micromonospora were potentially responsible for DEHP degradation. Based on PICRUSt2, the DEHP-degrading pathway in the sediment was predicted to be an anaerobic process involving catechol metabolism through catC, pcaD, pcaI, pcaF, and fadA. Efficient bacterial isolates from the mangrove sediment, identified as Gordonia sp. and Gordonia polyisoprenivorans, were able to degrade DEHP (65–97%) within 7 days and showed the ability to degrade other phthalate esters (PAEs).