Microbial communities inhabiting oil-contaminated soils from two major oilfields in Northern China: Implications for active petroleum-degrading capacity

Weimin Sun; Yiran Dong; Pin Gao; Meiyan Fu; Kaiwen Ta; Jiwei Li

doi:10.1007/s12275-015-5023-6

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Research Support, Non-U.S. Gov't
Microbial communities inhabiting oil-contaminated soils from two major oilfields in Northern China: Implications for active petroleum-degrading capacity: Weimin Sun ¹, Yiran Dong ², Pin Gao ³, Meiyan Fu ⁴, Kaiwen Ta ⁵, Jiwei Li ⁵; Journal of Microbiology 2015;53(6):371-378
DOI: https://doi.org/10.1007/s12275-015-5023-6
Published online: May 30, 2015

¹Department of Microbiology and Biochemistry, Rutgers University, New Brunswick, NJ, 08901, USA, ²Energy and Bioscience Institute, University of Illinois-Urbana Champaign, Urbana, IL, 61801, USA, ³School of Environmental Science and Engineering, Donghua University, 201620, Shanghai, P. R. China, ⁴College of Energy Resources, Chengdu University of Technology, Chengdu, 610059, P. R. China, ⁵Sanya Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, P. R. China¹Department of Microbiology and Biochemistry, Rutgers University, New Brunswick, NJ, 08901, USA, ²Energy and Bioscience Institute, University of Illinois-Urbana Champaign, Urbana, IL, 61801, USA, ³School of Environmental Science and Engineering, Donghua University, 201620, Shanghai, P. R. China, ⁴College of Energy Resources, Chengdu University of Technology, Chengdu, 610059, P. R. China, ⁵Sanya Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, 572000, P. R. China

Corresponding author: Jiwei Li , Tel: .,

Received: 13 January 2015 • Revised: 20 April 2015 • Accepted: 20 April 2015

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Abstract

Although oilfields harbor a wide diversity of microorganisms with various metabolic potentials, our current knowledge about oil-degrading bacteria is limited because the vast majority of oil-degrading bacteria remain uncultured. In the present study, microbial communities in nine oil-contaminated soils collected from Daqing and Changqing, two of the largest oil fields in China, were characterized through highthroughput sequencing of 16S rRNA genes. Bacteria related to the phyla Proteobacteria and Actinobacteria were dominant in four and three samples, respectively. At the genus level, Alkanindiges, Arthrobacter, Pseudomonas, Mycobacterium, and Rhodococcus were frequently detected in nine soil samples. Many of the dominant genera were phylogenetically related to the known oil-degrading species. The correlation between physiochemical parameters within the microbial communities was also investigated. Canonical correspondence analysis revealed that soil moisture, nitrate, TOC, and pH had an important impact in shaping the microbial communities of the hydrocarbon-contaminated soil. This study provided an in-depth analysis of microbial communities in oilcontaminated soil and useful information for future bioremediation of oil contamination.

Keywords: oil-degrading bacteria; bioremediation; microbial community analysis; Illumina sequencing

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Microbial communities inhabiting oil-contaminated soils from two major oilfields in Northern China: Implications for active petroleum-degrading capacity

J. Microbiol. 2015;53(6):371-378. Published online May 30, 2015

DOI: https://doi.org/10.1007/s12275-015-5023-6

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