Biodegradation of phenanthrene by indigenous microorganisms in soils from Livingstone Island, Antarctica

Okere, Uchechukwu V. and Cabrerizo, Ana and Dachs, Jordi and Jones, Kevin C. and Semple, Kirk T. (2012) Biodegradation of phenanthrene by indigenous microorganisms in soils from Livingstone Island, Antarctica. FEMS Microbiology Letters, 329 (1). pp. 69-77. ISSN 0378-1097

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Abstract

Biodegradation of polycyclic aromatic hydrocarbons (PAHs) in soils has been linked to history of exposure to PAHs and prevailing environmental conditions. This work assessed the capacity of indigenous microorganisms in soils collected in Livingstone Island (South Shetlands Islands, Antarctica) with no history of pollution (∑PAHs: 0.14–1.47 ng g−1 dw) to degrade 14C-phenanhthrene at 4, 12 and 22 °C. The study provides evidence of the presence of phenanthrene-degrading microorganisms in all studied soils. Generally, the percentage of 14C-phenanhthrene mineralized increased with increasing temperature. The highest extent of 14C-phenanhthrene mineralization (47.93%) was observed in the slurried system at 22 °C. This work supports findings of the presence of PAH-degrading microorganisms in uncontaminated soils and suggests the case is the same for uncontaminated Antarctic remote soils.

Item Type:
Journal Article
Journal or Publication Title:
FEMS Microbiology Letters
Uncontrolled Keywords:
/dk/atira/pure/core/keywords/environmentalscience
Subjects:
?? livingstone island, sub-antarctica, microbial degradation, phenanthrene, soilenvironmental sciencegeneticsmolecular biologymicrobiologyge environmental sciences ??
ID Code:
53527
Deposited By:
Deposited On:
18 Apr 2012 09:52
Refereed?:
Yes
Published?:
Published
Last Modified:
15 Jul 2024 12:44