Biodegradation of phenol by cold-adapted bacteria from Antarctic soils

Lee, Gillian Li Yin and Ahmad, Siti Aqlima and Yasid, Nur Adeela and Zulkharnain, Azham and Convey, Peter and Wan Johari, Wan Lutfi and Alias, Siti Aisah and Gonzalez-Rocha, Gerardo and Shukor, Mohd Yunus (2018) Biodegradation of phenol by cold-adapted bacteria from Antarctic soils. Polar Biology, 41 (3). pp. 553-562. ISSN 0722-4060, DOI

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Phenol is an important pollutant widely discharged as a component of hydrocarbon fuels, but its degradation in cold regions is a great challenge due to the harsh environmental conditions. To date, there is little information available concerning the biodegradation of phenol by indigenous Antarctic bacteria. This study addresses the isolation of three phenol-degrading bacterial strains from King George Island, Antarctica. Based on preliminary screening, three isolates (AQ5-05, AQ5-06 and AQ5-07) capable of completely degrading 0.5 g/L phenol within 120 h at 10 °C were selected for detailed study. Two were identified as Arthrobacter spp., and one Rhodococcus sp., based on 16S rRNA sequences. All strains were non-motile, Gram positive, oxidase negative and catalase positive. A study on the effects of parameters including temperature, pH, salinity and nitrogen source was conducted to optimise the conditions for phenol degradation. This revealed that the three isolates were psychrotolerant with the optimum temperature for phenol degradation between 10 and 15 °C. This study suggests the potential use of cold-adapted bacteria in the bioremediation of phenol over a wide range of low temperatures.

Item Type: Article
Funders: (UPM-YPASM 9300430), YPASM Berth Support, PUTRA-IPM (9476900), PUTRA-IPS (9508500), IIOES-2014G “Latitudinal Differences in Response and Adaptation of Microbes to Atmospheric Changes”, Research grant Higher Institute of Centre of Excellence, Ministry of Higher Education
Uncontrolled Keywords: Arthrobacter; Bioremediation; One-factor-at-a-time; Psychrotolerant; Rhodococcus; South Shetland Islands
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 20 Jun 2019 09:16
Last Modified: 20 Jun 2019 09:16

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