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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: Article
Journal or Publication Title: FEMS Microbiology Letters
Uncontrolled Keywords: Livingstone Island, sub-Antarctica, microbial degradation, phenanthrene, soil
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 53527
Deposited By: ep_importer_pure
Deposited On: 18 Apr 2012 10:52
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 23:18
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/53527

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