Synergistic degradation of crude oil by indigenous bacterial consortium and exogenous fungus Scedosporium boydii
[Display omitted] •Crude oil degradation was enhanced by co-cultures with Scedosporium boydii.•The bacterial biofilm on surface of Scedosporium boydii was observed.•The activity and evenness of microbial community were enhanced by co-cultures.•Paraburkholderia tropica was enriched after addition of...
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| Published in: | Bioresource technology 2018-09, Vol.264, p.190-197 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | eng |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | [Display omitted]
•Crude oil degradation was enhanced by co-cultures with Scedosporium boydii.•The bacterial biofilm on surface of Scedosporium boydii was observed.•The activity and evenness of microbial community were enhanced by co-cultures.•Paraburkholderia tropica was enriched after addition of Scedosporium boydii.
The purpose of this study was to investigate the potential of defined co-culture of indigenous bacterial consortium and exogenous fungus Scedosporium boydii for biodegradation of crude oil. After 7 days of incubation, residual oil, n-alkanes and aromatic fraction were analyzed. The degradation rate of crude oil was increased from 61.06% to 81.45% by the defined co-culture according to the 3:1 inoculation ratio of bacteria to fungi. The microbial activity was enhanced markedly and the formation of biofilms was accelerated after suitable inoculation of Scedosporium boydii. High throughput analysis showed that bacterial evenness and diversity were increased and the relative abundance of Paraburkholderia tropica was increased observably from 7.67% to 56.13% in the defined co-culture. These results indicated that synergistic degradation of crude oil in the bacteria-fungi consortium may be advantageous for bioremediation of petroleum-contaminated site. |
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| ISSN: | 0960-8524 1873-2976 |