Thermotolerant oil-degrading bacteria isolated from soil and water of geographically distant regions

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• 作者：Ya. A. Delegan ; A. A. Vetrova ; V. N. Akimov…
• 刊名：Applied Biochemistry and Microbiology
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：52
• 期：4
• 页码：389-396
• 全文大小：352 KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Biochemistry
  Microbiology
  Medical Microbiology
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3024
• 卷排序：52

文摘

Oil-degrading bacteria were isolated from soil and water samples taken in Russia, Kazakhstan, and the Antarctic; 13 of 86 strains proved to be thermotolerant. These bacteria utilized crude oil at 45–50°C; their growth optimum (35–37°C) and range (20–53°C) differ from those of mesophilic bacteria. Thermotolerant strains were identified as representatives of the genera Rhodococcus and Gordonia. It was shown that their ability to degrade petroleum products does not differ at 24 and 45°C. The strains Rhodococcus sp. Par7 and Gordonia sp. 1D utilized 14 and 20% of the oil, respectively, in 14 days at 45°C. All of the isolated thermotolerant bacteria grew in a medium containing 3% NaCl; the medium for the strains Gordonia amicalis 1B and Gordonia sp. 1D contained up to 10% NaCl. The bacteria G. amicalis and Rhodococcus erythropolis were able to utilize crude oil and individual hydrocarbons at higher (up to 50°C) temperatures.Keywordsbioremediationbiodegradationcrude oiloil-degrading bacteriathermotolerant bacteriaGordoniaRhodococcus