Document Detail


Indigenous hydrocarbon-utilizing bacterioflora in oil-polluted habitats in Kuwait, two decades after the greatest man-made oil spill.
MedLine Citation:
PMID:  22398928     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Kuwaiti habitats with two-decade history of oil pollution were surveyed for their inhabitant oil-utilizing bacterioflora. Seawater samples from six sites along the Kuwaiti coasts of the Arabian Gulf and desert soil samples collected from seven sites all over the country harbored oil-utilizing bacteria whose numbers made up 0.0001-0.01% of the total, direct, microscopic counts. The indigenous bacterioflora in various sites were affiliated to many species. This was true when counting was made on nitrogen-containing and nitrogen-free media. Seawater samples harbored species belonging predominantly to the Gammaproteobacteria and desert soil samples contained predominantly Actinobacteria. Bacterial species that grew on the nitrogen-free medium and that represented a considerable proportion of the total in all individual bacterial consortia were diazotrophic. They gave positive acetylene-reduction test and possessed the nifH genes in their genomes. Individual representative species could utilize a wide range of aliphatic and aromatic hydrocarbons, as sole sources of carbon and energy. Quantitative determination showed that the individual species consumed crude oil, n-octadecane and phenanthrene, in batch cultures. It was concluded that the indigenous microflora could be involved in bioremediation programs without bioaugmentation or nitrogen fertilization. Irrigation would be the most important practice in bioremediation of the polluted soil desert areas.
Authors:
H Al-Awadhi; D Al-Mailem; N Dashti; M Khanafer; S Radwan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-8
Journal Detail:
Title:  Archives of microbiology     Volume:  -     ISSN:  1432-072X     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410427     Medline TA:  Arch Microbiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Biological Sciences, Faculty of Science, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait.
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