The presence of polycyclic aromatic hydrocarbons (PAHs) in marine environments as a result of contamination is an environmental concern, especially in regions where oil spills such as the Deepwater Horizon have occurred. While numerous PAHs have been studied for their effects on microbes, the family of dibenzopyrenes has yet to be investigated. In this preliminary study, the impacts of these molecules on the community structure of a bacterial consortium isolated from oil‐impacted Gulf of Mexico sediment were examined using high‐throughput sequencing, demonstrating intriguing negative impacts on species diversity and abundance. While no measurable degradation of the dibenzopyrenes was observed after 28‐day incubation, the abundance of known oil‐degrading bacteria from orders such as Oceanospirillales, Caulobacterales, Sphingomonadales, and Nitrosococcales were shown to be enhanced. Of the five isomers of dibenzopyrene studied, dibenzo[a,h]pyrene supported the fewer number of microbial species suggesting the isomer was more toxic compared to the other isomers.

中文翻译：

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二苯并py烯对从墨西哥湾沉积物中分离出的细菌群落的影响。

污染导致海洋环境中多环芳烃（PAH）的存在是环境问题，尤其是在深水地平线等漏油地区发生了。尽管已经研究了许多PAHs对微生物的影响，但尚未对二苯并吡喃家族进行研究。在这项初步研究中，使用高通量测序研究了这些分子对分离自受石油影响的墨西哥湾沉积物的细菌群落的群落结构的影响，证明了其对物种多样性和丰度的负面影响。孵育28天后未观察到二苯并py的可降解降解，但已证明来自海洋螺旋藻，杆状细菌，鞘氨醇和硝基球菌等细菌的大量已知的可降解油的细菌数量有所增加。在研究的二苯并py的五个异构体中，二苯并[ a，hpy支持较少种类的微生物，这表明该异构体比其他异构体更具毒性。