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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 20, No. 2, 2016, pp. 287-291
Bioline Code: ja16034
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 20, No. 2, 2016, pp. 287-291

 en Evaluation of Antibiotic Resistance Patterns and Heavy Metals Tolerance of some Bacteria Isolated from Contaminated Soils and Sediments from Warri, Delta State, Nigeria.
EGHOMWANRE, A.F.; OBAYAGBONA, N.O.; OSARENOTOR, O. & ENAGBONMA, B.J.

Abstract

This work investigated the antibiotic resistance patterns and heavy metals such as Lead (Pb), Zinc (Zn), Cadmium (Cd) and iron (Fe) tolerance of selected bacteria isolated from contaminated soils and sediments around Warri area of Delta State. The heterotrophic bacterial counts for the sampled soils and sediments ranged from 1.7×105 cfu/g to 5.7×105cfu/g for Ubeji river sediments, 1.0×105 cfu/g to 9.0×105cfu/g for spare parts dumpsite and 1.2×104cfu/g to 9.0×104 cfu/g for Ifie depot sites respectively. The characterized bacterial isolates included; Klebsiella check for this species in other resources sp, Bacillus subtilis check for this species in other resources , Streptococcus check for this species in other resources sp., Escherichia coli check for this species in other resources , Klebsiella mobilis check for this species in other resources and Staphylococcus check for this species in other resources sp., Micrococcus check for this species in other resources sp. and Pseudomonas aeroginosa check for this species in other resources . Bacterial isolates showed multiple drug resistance and the most resistant isolates were S. aureus check for this species in other resources , E. coli check for this species in other resources and P. aeroginosa check for this species in other resources while K. mobilis check for this species in other resources exhibited the least resistance. The tolerance of the bacterial isolates exposed to varying concentrations of Pb2+, Cd2+, Fe2+, and Zn2+was ascertained using agar diffusion method. All the bacterial isolates exhibited varying degree of susceptibility at different concentrations of Pb and Cd while the organisms displayed abundant and moderate growth in the presence of Fe and Zn even at higher concentrations. The ability of these bacteria to resist antibiotics and heavy metal tolerance could present serious danger to the environment as the resistance genes may be transferred to surrounding wild type microbial cells.

Keywords
Heavy metals; Antibiotics resistance; tolerance; Ubeji river sediments; Warri

 
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