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Current Research in Bacteriology
  Year: 2014 | Volume: 7 | Issue: 1 | Page No.: 22-31
DOI: 10.3923/crb.2014.22.31
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Screening of Microbes for Their Metal, Antibiotic Resistance and Plant Growth Promoting Activity

Parvaze Ahmad Wani and Onukwue Ijeoma Irene

Heavy metal contamination has accelerated due to the rapid industrialization worldwide. Accumulation of metals in excess can modify the structure of essential protein or can replace an essential element. Aim of this study is to check the bacterial species for their tolerance towards multiple metals as well as antibiotics and further check whether these metal resistant microbes are producing any plant growth promoting substances. Bacterial strains were isolated from the soil sample collected from the industrial area of Lagos, were tested for their tolerance to both heavy metals and antibiotics by agar plate dilution method and by the disc diffusion method, respectively. Plant growth promoting activity was checked by the standard methods. All of the isolates showed tolerance to lead, zinc and copper. All the isolates showed maximum tolerance towards lead and zinc which was followed by copper. Bacterial species also showed tolerance towards antibiotics, 80c/o of the isolates were tolerant to Ampicillin, Cotrimozazole, Gentamycin, Colistin, Streptomycin and Tetracycline whereas 20% of the isolates were tolerant to Nalidic and Nitrofurantoin. Bacterial strains were also tested for their Plant Growth Promoting (PGP) substances, all the isolates were positive to ammonia, HCN and Phosphate solubilization.
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How to cite this article:

Parvaze Ahmad Wani and Onukwue Ijeoma Irene, 2014. Screening of Microbes for Their Metal, Antibiotic Resistance and Plant Growth Promoting Activity. Current Research in Bacteriology, 7: 22-31.

DOI: 10.3923/crb.2014.22.31






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