Phthalate Esters Metabolic Strain Gordonia sp. GZ-YC7, a Potential Soil Degrader for High Concentration Di-(2-ethylhexyl) Phthalate

Abstract

As commonly used chemical plasticizers in plastic products, phthalate esters have 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 results showed that there exist diverse esterases for various phthalate esters such as di-(2-ethylhexyl) phthalate and dibutyl phthalate in Gordonia sp. GZ-YC7. This genome characteristic possibly contributes to its broad substrate spectrum, high degrading efficiency, and high tolerance to phthalate esters. Gordonia sp. GZ-YC7 has potential for the bioremediation of phthalate esters in polluted soil environments.

Genomic, Phylogenetic and Physiological Characterization of the PAH-Degrading Strain Gordonia polyisoprenivorans 135

“…However, the plasticity of genomes and metabolic flexibility of representatives of the genus Gordonia make them interesting for both fundamental studies and practical applications. Gordonia strains are mainly known as degraders of alkanes [29][30][31], but among them there are also degraders of thiophenes [26,32], phthalates [33][34][35] and steroids [36][37][38].…”

Whole Genome Analysis and Assessment of the Metabolic Potential of Gordonia rubripertincta Strain 112, a Degrader of Aromatic and Aliphatic Compounds

“…Gordonia strains are interesting for application in biotechnologies of environmental purification as degraders of pollutants of different chemical structures, such as alkanes [11][12][13][14], aromatic hydrocarbons [15,16] and their derivatives [17,18], thiophenes [19][20][21], and phthalates [22][23][24][25][26]. The type strains of several Gordonia species were isolated from soils contaminated with thiophenes (G. amicalis [27]), tar (G. alkanivorans [28]), from automobile tires (G. polyisoprenivorans [29], G. westfalica [30]), oil-producing wells (G. paraffinivorans [31]), and activated sludge [23].…”

Insights into the Potential Role of Gordonia alkanivorans Strains in Biotechnologies

“…The strains Gordonia hongkongensis RL-LY01 [37] and Gordonia sp. GZ-YC7 [38] exhibit a strong potential for environmental bioremediation due to their ability to effectively degrade various phthalate esters or phthalic acid esters (PAEs). Hu et al (2022) reported that Gordonia sp.…”

“…GZ-YC7 [38] exhibit a strong potential for environmental bioremediation due to their ability to effectively degrade various phthalate esters or phthalic acid esters (PAEs). Hu et al (2022) reported that Gordonia sp. GZ-YC7 efficiently removed more than 45% of di-(2-ethylhexyl) phthalate with an initial concentration of 500 mg/kg within 5 days, even when soil microbial activity is typically inhibited at lower di-(2-ethylhexyl) phthalate (DEHP) concentrations.…”