Effects of Bacterial-Feeding Nematodes and Glucose on Phenanthrene Removal by Pseudomonas putida

文献类型： 外文期刊

第一作者： Jing Yongping

作者： Jing Yongping;Li Yan;Zhang Yingpeng;Liu Ping;Sun Ming;Jing Yongping;Li Yan;Zhang Yingpeng;Jing Yongping;Liu Zhaohui;Luo, Jiafa

作者机构：

关键词： biodegradation;biostimulation;catechol 2,3-dioxygenase;enzyme activity;polycyclic aromatic hydrocarbons

期刊名称：PEDOSPHERE （ 影响因子：3.911； 五年影响因子：4.814 ）

ISSN： 1002-0160

年卷期： 2017 年 27 卷 1 期

页码：

收录情况： SCI

摘要： Bacterial-feeding nematodes can promote the bacterial activity through feeding. Bacterial abundance and their activity affect the degradation of polycyclic aromatic hydrocarbons (PAH) such as phenanthrene. The effects of bacterial-feeding nematodes, bacteria, and their interactions on the degradation of phenanthrene with or without glucose were studied through a microcosm experiment. The results showed that up to 57.0% of phenanthrene in mineral medium contaminated with phenanthrene was degraded in the control with bacteria alone and bacteria with the presence of nematodes and/or glucose increased the degradation of phenanthrene by 25.6% to 36.6%. Although both nematode and bacteria abundance decreased gradually, catechol 2,3-dioxygenase (C23O) activity increased during the incubation period. Compared with bacteria alone, the presence of nematodes significantly increased C23O activity as well as the abundance of bacteria; this effect was more pronounced when glucose was present. The results imply that nematodes might promote the removal of phenanthrene from medium by stimulating bacteria and C23O activities.

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