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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 new bacterial strain, Gordonia sp. GZ-YC7, from soil used with plastic mulch film, which can efficiently break down high concentrations of phthalate esters — common plasticizers that leach from plastic products into soil and water. Microbial degradation of phthalates is important because these compounds are linked to hormone disruption in humans and wildlife.
As commonly used chemical plasticizers in plastic products, phthalate esters had become a serious ubiquitous environmental pollutant, such as in soil of plastic film mulch culture. Microbial degradation or transformation was regarded as a suitable strategy to solve the phthalate esters pollution. Thus, a new phthalate esters degrading strain Gordonia sp. GZ-YC7 was isolated in this study, which exhibited the highest di-(2-ethylhexyl) phthalate degradation efficiency under 1000 mg/L and the strongest tolerance to 4000 mg/L. The comparative genomic analysis showed that there exist diverse degradation pathways for various phthalate esters such as di-(2-ethylhexyl) phthalate and dibutyl phthalate in Gordonia sp. GZ-YC7, which possibly contributes to its broad substrate spectrum, high degrading efficiency and high tolerance to phthalate esters. Gordonia sp. GZ-YC7 is potential for bioremediation of phthalate esters in polluted soil environments.
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Phthalate Esters Metabolic Strain Gordonia sp. GZ-YC7, a Potential Soil Degrader for High Concentration Di-(2-ethylhexyl) Phthalate
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