Bioaccumulation properties of nickel-, cadmium-, and chromium-resistant mutants of Pseudomonas aeruginosa NBRI 4014 at alkaline pH.
Nickel-, cadmium-, and chromium-resistant mutants of Pseudomonas aeruginosa sp. NBRI 4014 are potent growth promontory strains. In the presence of metal(s), they have shown increased cell morphology and could accumulate nickel (2.0874 mM/g), cadmium (2.295 mM/g), and chromium (2.997 mM/g) at pH 9. However, chromium accumulation was maximum, but the toxicity levels of nickel, cadmium, and chromium was ranged from 90 to 504 microM of used metal(s). Bioaccumulation increases up to the fifth day at the highest used metal concentration and then became constant. This suggests their exploitation for detoxification and subsequently loaded biomass treatment for the recovery of accumulated metal(s).
Gupta
Abhishek
A
Department of Microbiology, G.B. Pant University of Agriculture & Technology, Pantnagar-263145, India.
Kumar
Mahesh
M
Goel
Reeta
R
D000042:Absorption / Q000187:drug effects; D002104:Cadmium / Q000378:metabolism* / Q000494:pharmacology; D002857:Chromium / Q000378:metabolism* / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D009154:Mutation; D009532:Nickel / Q000378:metabolism* / Q000494:pharmacology; D011550:Pseudomonas aeruginosa / Q000187:drug effects / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism*
D002104:Cadmium; D002857:Chromium; D009532:Nickel