Diesel degradation potential of endophytic bacteria isolated from Scirpus triqueter

作者：Zhang, Xinying; Liu, Xiaoyan^*; Wang, Qian; Chen, Xueping; Li, Hongbing; Wei, Jing; Xu, Gang

来源：International Biodeterioration & Biodegradation, 2014, 87: 99-105.

DOI：10.1016/j.ibiod.2013.11.007

• Scirpus triqueter
• Diesel
• Degradation
• Endophyte
• Biosurfactant

Scirpus triqueter, a dominant species in wetland of Huangpu-Yangtze estuary can be used for phytoremediation. Endophytic bacteria from S. triqueter were investigated to evaluate the ability to degrade diesel. Bacterial incubation experiments were established to screen diesel degradation of endophytic microorganisms from S. triqueter. The oil-degrading bacterial strain J4AJ was discovered in vivo of S. triqueter and identified as Pseudomonas sp. U-3 bacterial strain also isolated from the root and stem of S. triqueter was identified to be the potent producer of biosurfactant as Bacillus subtilis. The minimum surface tension of U-3 was 30.9 mN/m. The bacterium manifested outstanding adaptation ability at extremes of temperature, pH and salinity. The removal ratio of J4AJ could be greatly improved by adding U-3 strain. However, the degradation ratio of J4AJ was obviously decreased by the addition of Alkyl Polysaccharide Glycoside (APG). The results suggested that J4AJ and U-3 inoculated were conducive to the degradation of diesel, which can be used for the remediation of oil-contaminated ecological environment.

• 出版日期2014-2
• 单位上海大学