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7667271 
Journal Article 
Anthraquinone-2,6-disulfonate enhanced biodegradation of dibutyl phthalate: Reducing membrane damage and oxidative stress in bacterial degradation 
Zhang, Y; Shi, H; Gu, J; Jiao, Y; Han, S; Akindolie, MS; Wang, Y; Zhang, L; Tao, Y; , 
2020 
Yes 
Bioresource Technology
ISSN: 0960-8524
EISSN: 1873-2976 
ELSEVIER SCI LTD 
OXFORD 
302 
122845 
English 
32000129 
WOS:000513868000043 
Plasticizer dibutyl phthalate (DBP) pollution has received more and more attention. In this study, a DBP degrading bacteria Enterobacter sp. DNB-S2 was found to suffer membrane damage and oxidative stress during DBP degradation. Physiological and transcriptome analysis showed that 100 μmol L-1 anthraquinone-2,6-disulfonate (AQDS) could enhance the ability of strain DNB-S2 for biodegradation of DBP. AQDS adjusted the cell surface structure, including increase levels of hydrophobic and unsaturated fatty acids. These changes increased the chemotactic ability of the strain DNB-S2 to the hydrophobic pollutant DBP and the fluidity of the cell membrane. The expression of methyl chemotactic protein and genes associated with cell membrane-fixed components were up-regulated. AQDS also improved the scavenging ability of ·OH and H2O2 of DNB-S2 by promoting expression genes related to glutathione metabolism, thereby reducing oxidative stress. These results will provide new insights into the biodegradation of DBP. 
article; Anthraquinone-2,6-disulfonate; Cell membrane; Enterobacter; bacteria; biodegradation; cell membranes; chemotaxis; dibutyl phthalate; gene expression regulation; glutathione; hydrogen peroxide; hydrophobicity; hydroxyl radicals; oxidative stress; plasticizers; pollutants; pollution; sulfonates; transcriptomics; unsaturated fatty acids