Volume 11, Issue 2, November 2014, Pages 543–550
Melkamu Tamiru1, Yosef Hamba2, and Munees Ahemad3
1 Collage of Natural and Computational Science, Stream of Microbial, Molecular and Cellular Debra Birhan University, P.O. Box 455, Debra Birhan, Ethiopia
2 Department of Molecular Biology and Biotechnology, Pan African University Institute of Basic Science, Technology and Innovation at Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000-00200, Nairobi, Kenya
3 Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh-202002, U.P., India
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Aims: Pollution of the environment with toxic heavy metals is spreading throughout the world with industrial progress. Metal pollution in industrial areas is of serious environmental concern as these metals like chromium (Cr), nickel (Ni), mercury (Hg), cadmium (Cd), lead (Pb) and cupper (Cu) are known to cause damage to living organisms including human beings. The study investigated the level of heavy metals and antibiotics resistance in bacteria isolated from rhizosphere soils contaminated with tannery effluents.
Methodology and Results: Soil samples were collected from three selected rhizosphere soils of the Tannery effluent contaminated environments and heavy metals resistant rhizobacteria were isolated from soil. A total of twenty one rhizobacteria were isolated from Potassium dichromate supplemented nutrient agar. These isolates were categorized under Pseudomonas species, Staphylococcus, Clostridium, Klebsiella species, Bacillus species, Listeria species, and Streptococcus species after biochemical tests. Further, these isolates were assessed for resistance to other heavy metals and antibiotic resistance. Most of these isolate exhibiting maximum resistance against both metals and antibiotics.
Conclusion, Significance and Impact of study: These heavy metal resistant bacteria can be useful for the bioremediation of heavy metal contaminated environment including industrial effluents.
Author Keywords: Antibiotics, Bacterial resistance, Heavy metals, Soil, Tannery effluents.
Melkamu Tamiru1, Yosef Hamba2, and Munees Ahemad3
1 Collage of Natural and Computational Science, Stream of Microbial, Molecular and Cellular Debra Birhan University, P.O. Box 455, Debra Birhan, Ethiopia
2 Department of Molecular Biology and Biotechnology, Pan African University Institute of Basic Science, Technology and Innovation at Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000-00200, Nairobi, Kenya
3 Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh-202002, U.P., India
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Aims: Pollution of the environment with toxic heavy metals is spreading throughout the world with industrial progress. Metal pollution in industrial areas is of serious environmental concern as these metals like chromium (Cr), nickel (Ni), mercury (Hg), cadmium (Cd), lead (Pb) and cupper (Cu) are known to cause damage to living organisms including human beings. The study investigated the level of heavy metals and antibiotics resistance in bacteria isolated from rhizosphere soils contaminated with tannery effluents.
Methodology and Results: Soil samples were collected from three selected rhizosphere soils of the Tannery effluent contaminated environments and heavy metals resistant rhizobacteria were isolated from soil. A total of twenty one rhizobacteria were isolated from Potassium dichromate supplemented nutrient agar. These isolates were categorized under Pseudomonas species, Staphylococcus, Clostridium, Klebsiella species, Bacillus species, Listeria species, and Streptococcus species after biochemical tests. Further, these isolates were assessed for resistance to other heavy metals and antibiotic resistance. Most of these isolate exhibiting maximum resistance against both metals and antibiotics.
Conclusion, Significance and Impact of study: These heavy metal resistant bacteria can be useful for the bioremediation of heavy metal contaminated environment including industrial effluents.
Author Keywords: Antibiotics, Bacterial resistance, Heavy metals, Soil, Tannery effluents.
How to Cite this Article
Melkamu Tamiru, Yosef Hamba, and Munees Ahemad, “Assessment of Heavy Metals and Antibiotic Resistance in Rhizobacteria Isolated from Rhizosphere Soils Contaminated with Tannery Effluents in Bahir Dar, Ethiopia,” International Journal of Innovation and Scientific Research, vol. 11, no. 2, pp. 543–550, November 2014.
