Journal
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
Volume 28, Issue 1, Pages 73-77Publisher
ELSEVIER
DOI: 10.1016/j.sjbs.2020.08.033
Keywords
Crude oil contamination; Mycoremediation; Aspergillus; Internal transcribed spacer region
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Crude oil biodegrading fungal strains were isolated from polluted soil in the Khurais oil field in Saudi Arabia, with Aspergillus niger showing the highest degradation and CO2 emission capability. These findings suggest the potential of using Aspergillus niger as a bio-remediation agent for recovering ecosystems contaminated by crude oil.
Crude oil biodegrading microorganism considers the key role for environmental preserving. In this investigation, crude oil biodegrading fungal strains have been isolated in polluted soil of crude-oil at khurais oil ground in Kingdom of Saudi Arabia. Among of 22 fungal isolates, only three isolates reflected potential capability for oil degradation. These isolates were identified and submitted to GenBank as (A1) Aspergillus polyporicola (MT448790), (A2) Aspergillus spelaeus (MT448791) and (A3) Aspergillus niger (MT459302) through internal-transcribed spacer-regions (ITS1&ITS2) for sequencing in molecular marker. Comparing with controls, strain (A1) Aspergillus niger was superior for biodegradation ability (58%) comparing with Aspergillus polyporicola and Aspergillus spelaeus degrading were showed 47 and 51% respectively. Employed CO2 evolution as indicator for petroleum oil biodegradation by the fungal isolates reflected that, Aspergillus niger emission highest CO2 (28.6%) comparing with Aspergillus spelaeus and Aspergillus polyporicola which showed 13% and 12.4% respectively. capability of Aspergillus sp. to tolerate and adapted oil pollutants with successful growth rate on them, indicated that it can be employed as mycoremediation agent for recovering restoring ecosystem when contaminated by crude oil. (C) 2020 The Author. Published by Elsevier B.V. on behalf of King Saud University.
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