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Molecular evaluation of the metabolism of estrogenic di(2-ethylhexyl) phthalate in Mycolicibacterium sp.
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Biochemical, genomic, and transcriptomic analyses revealed the metabolic pathways used by Mycolicibacterium sp. strain MBM to degrade the plasticizer di(2-ethylhexyl) phthalate, with the bacterium functioning in both freshwater and seawater salinity ranges.
A detailed co-relation of biochemical, genomic, transcriptomic and RT-qPCR analyses highlights the PAE-degrading catabolic machineries in strain MBM. Further, due to functional attributes in the salinity range of both freshwater and seawater, strain MBM may find use as a suitable candidate in the bioremediation of PAEs.
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Identification and Characterization of a Novel Di-(2-ethylhexyl) Phthalate Hydrolase from a Marine Bacterial Strain Mycolicibacterium phocaicum RL-HY01
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Researchers identified and characterized a novel hydrolase enzyme (DehpH) from a marine bacterium capable of breaking down DEHP, a common phthalate plasticizer, identifying key catalytic residues and demonstrating efficient degradation across a range of phthalate compounds. These findings offer new insights into microbial phthalate biodegradation mechanisms.
Biodegradation of phthalic acid esters (PAEs) by Janthinobacterium sp. strain E1 under stress conditions
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Researchers isolated a bacterial strain, Janthinobacterium sp. E1, that can efficiently break down phthalate esters, which are chemicals commonly added to plastics to increase flexibility. The bacterium maintained its ability to degrade the pollutant DEHP even under stressful environmental conditions like high salinity and extreme pH. The findings suggest that this microorganism could be useful for cleaning up phthalate-contaminated environments.
Microbiology combined with metabonomics revealing the response of soil microorganisms and their metabolic functions exposed to phthalic acid esters
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Researchers examined how common plastic plasticizers (phthalic acid esters) affect soil microorganisms and their metabolic functions using genomic sequencing and metabolomics. They found that while plasticizers did not significantly change bacterial diversity in the short term, they altered community structure and disrupted metabolic pathways, with dibutyl phthalate affecting 172 metabolites and 43 metabolic pathways. The study also identified certain soil bacteria with potential to degrade these plasticizer compounds.
High-efficiency degradation of phthalic acid esters (PAEs) by Pseudarthrobacter defluvii E5: Performance, degradative pathway, and key genes
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A bacterial strain Pseudarthrobacter defluvii E5 isolated from agricultural soil efficiently degraded multiple phthalate ester plasticizers including DEHP and DBP through a characterized enzymatic pathway, with key genes identified that could be targets for engineering enhanced bioremediation strains for phthalate-contaminated soils.
Phthalate Esters Metabolic Strain Gordonia sp. GZ-YC7, a Potential Soil Degrader for High Concentration Di-(2-ethylhexyl) Phthalate
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Researchers isolated a novel bacterium, Gordonia sp. GZ-YC7, from agricultural soil contaminated by plastic film mulch that could degrade di-(2-ethylhexyl) phthalate at concentrations up to 1000 mg/L and tolerate levels as high as 4000 mg/L, with comparative genomics revealing the degradation pathway.
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