Molecular identification and characterization of indigenous bacterial strains isolated from soils around some oil refineries in Iran

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JSSSI-1-1_005

تاریخ نمایه سازی: 23 بهمن 1401

Abstract:

One of the main causes of soil pollution is the release of crude oil into the environment. Indigenous microorganisms with the capability of biodegrading hydrocarbon components can be used to improve the efficiency of microbial bioremediation technology. Here, oil-contaminated soils were collected from five oil refineries (Abadan, Isfahan, Tehran, Tabriz and Shiraz) for screening and isolation of geographically adaptive indigenous oil-degrading bacteria. Bacterial colonies from oil-contaminated soil samples were isolated, which were able to grow in a medium containing crude oil, light, and heavy diesel, as a sole carbon source. Twelve strains were isolated, purified, and identified, using the ۱۶S rRNA gene sequencing analysis. The isolates belonged to five species, including Achromobacter spanius, Klebsiella quasipneumoniae, Ochrobactrum intermedium, Citrobacter amalonaticus, Pseudomonas aeruginosa. These bacterial strains were capable of growing in media containing crude oil, light and heavy diesel for ۷ to ۹ days and had the potential for biosurfactant production. These bacterial strains can be considered as geographically adaptive bacteria, creating preliminary data for further research to utilize their bioremediation potential.

Authors

Zahra Alipour Asadabadai

PhD Student, Department of Natural Resources, Isfahan University of Technology, Isfahan, ۸۴۱۵۶۸۳۱۱۱, Iran

Mansoureh Malekian

Associate Professor, Department of Natural Resources, Isfahan University of Technology, Isfahan, ۸۴۱۵۶۸۳۱۱۱, Iran

Sayed Hossein Mirdamadian

Lecturer, Department of Microbiology, Islamic Azad University, Falavarjan Branch, Isfahan, Iran

Mohsen Soleimani

Associate Professor, Department of Natural Resources, Isfahan University of Technology, Isfahan, ۸۴۱۵۶۸۳۱۱۱, Iran

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