ANTIBIOTIC AND METAL RESISTANCE OF AZOTOBACTERIA, ENTEROBACTERIA AND PSEUDOMONADS ISOLATED FROM AGRICULTURAL, PASTURE AND MINING SOILS IN HAMEDAN, IRAN

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YOUNESSI N.; SAFARI SINEGANI A.S.

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Journal: Journal of Soil Biology Year:2017 | Volume:5 | Issue:1 Page(s): 67-80

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Title

ANTIBIOTIC AND METAL RESISTANCE OF AZOTOBACTERIA, ENTEROBACTERIA AND PSEUDOMONADS ISOLATED FROM AGRICULTURAL, PASTURE AND MINING SOILS IN HAMEDAN, IRAN

Author(s)

YOUNESSI N. | SAFARI SINEGANI A.S. | Issue Writer Certificate

Keywords

ANTIBIOTIC RESISTANT BACTERIAQ1

AMINOGLYCOSIDESQ1

BETA LACTAMSQ1

TETRACYCLINESQ1

HEAVY METALSQ1

Abstract

Heavy metals may increase antibiotic resistance in bacteria. The aim of this study was to determine antibiotic-resistance of frequent Gram-negative isolates in agricultural, pasture and mine soils. Hence, 97 isolates from soil samples were selected and antibiotic (7 antibiotics) and heavy metal resistance were determined by disc diffusion and MIC methods. Based on the results, 50% of the Azotobacters from agricultural soils and 28.57% of those from pastures showed multi-resistant against amoxicillin, ampicillin, vancomycine and tetracycline.62.5% of Enterobacter strains from agricultural soils, 33.33% of pastures isolates and 35% of the mining soils isolates showed resistance to these antibiotics.87.5% of the agricultural soilPseudomonas strains and 100% of pastures isolates showed also resistance to these antibiotics. According to the results, the resistance to streptomycin and doxycycline in three isolates was high, whereas it was the least for gentamicin. All isolates displayed resistance to lead and sensitivity to cadmium. All agricultural soil Azotobacter strains, 57% of pasture isolates and 66.7% of mining waste isolates were multi-resistant to Pb, Hg and Ni. Abundance of Enterobacters, resistant to these metals from agricultural, pasture and mining waste samples was 45.83, 80 and 65%.37.50 and 66.7% ofPseudomonas strains from agricultural and mining wastes showed also resistance to those metals. The high percentage of antibiotic-resistance may be attributed to the HEAVY METALS in soils. Resistance to antibiotics in all soils was high. But, due to the favorable conditions of agricultural soils, it seems that dangerous antibiotic-resistant bacteria may be spreading much more faster.

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APA: Copy

YOUNESSI, N., & SAFARI SINEGANI, A.S.. (2017). ANTIBIOTIC AND METAL RESISTANCE OF AZOTOBACTERIA, ENTEROBACTERIA AND PSEUDOMONADS ISOLATED FROM AGRICULTURAL, PASTURE AND MINING SOILS IN HAMEDAN, IRAN. JOURNAL OF SOIL BIOLOGY, 5(1 ), 67-80. SID. https://sid.ir/paper/241384/en

Vancouver: Copy

YOUNESSI N., SAFARI SINEGANI A.S.. ANTIBIOTIC AND METAL RESISTANCE OF AZOTOBACTERIA, ENTEROBACTERIA AND PSEUDOMONADS ISOLATED FROM AGRICULTURAL, PASTURE AND MINING SOILS IN HAMEDAN, IRAN. JOURNAL OF SOIL BIOLOGY[Internet]. 2017;5(1 ):67-80. Available from: https://sid.ir/paper/241384/en

IEEE: Copy

N. YOUNESSI, and A.S. SAFARI SINEGANI, “ANTIBIOTIC AND METAL RESISTANCE OF AZOTOBACTERIA, ENTEROBACTERIA AND PSEUDOMONADS ISOLATED FROM AGRICULTURAL, PASTURE AND MINING SOILS IN HAMEDAN, IRAN,” JOURNAL OF SOIL BIOLOGY, vol. 5, no. 1 , pp. 67–80, 2017, [Online]. Available: https://sid.ir/paper/241384/en

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