Effect of Rhodococcus bioaugmentation and biostimulation on dibenzothiophene biodegradation and bacterial community interaction in petroleum-contaminated soils

文献类型： 外文期刊

第一作者： Chen, Wenjie

作者： Chen, Wenjie;Zuo, Yilin;Hou, Zhuonan;Peng, Bihui;Zhou, Kaiyun;Li, Ji;Liu, Rui;Ding, Guochun;Wei, Yuquan;Xu, Ting;Chen, Wenjie;Zuo, Yilin;Ding, Xiaoyan;Peng, Bihui;Zhou, Kaiyun;Li, Ji;Ding, Guochun;Wei, Yuquan;Xu, Ting;Wang, Bo;Xiong, Shangao;Liu, Rui

作者机构：

关键词： mesocosm; soil bioremediation; polycyclic aromatic hydrocarbons (PAHs); microbial community; molecular ecology network

期刊名称：FRONTIERS IN ENVIRONMENTAL SCIENCE （ 影响因子：4.6； 五年影响因子：5.3 ）

ISSN：

年卷期： 2023 年 11 卷

页码：

收录情况： SCI

摘要： Bioremediation can be effective method for achieving polycyclic aromatic hydrocarbons (PAHs) degradation in soil contaminated with petroleum. The aim of this study was to compare the effect of Rhodococcus bioaugmentation (BIOE) and biostimulation (BIOS) on dibenzothiophene biodegradation and bacterial community interaction in petroleum-contaminated soils. The findings revealed that compared to natural degradation treatment (NAT) and BIOS, BIOE had the highest dibenzothiophene (DBT) and the majority of DBT degradation occurred within the first 30 days. BIOS had a positive impact in the early stage but an opposite effect in the later stages for degrading DBT. Beta diversity analysis revealed significant differences of bacterial composition among NAT, BIOS, and BIOE. Sequencing results indicated that Bacillus and Paenibacillus were dominant genera involved in DBT degradation. Network analysis revealed co-occurrence patterns and connectivity, with BIOE exhibiting higher connectivity and the highest number of links in BIOS. In summary, Rhodococcus bioaugmentation was the simplest and effective method to enhance the clustering degree of bacterial network and DBT degradation in petroleum-contaminated soil, compared to NAT and BIOS.

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