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Isolation, identification and characterization of cadmium-resistant Pseudomonas aeruginosa strain E1

  • Xiao-xi Zeng (曾晓希)
  • Jian-xin Tang (汤建新)
  • Xue-duan Liu (刘学端)Email author
  • Pei Jiang (蒋 佩)
Article

Abstract

Strain E1 with resistance to 18 mmol/L cadmium (Cd), isolated from Cd-contaminated soil was identified by morphological observation, biochemical and physiological characterization and 16S rDNA sequence analysis. The resistance to heavy metals Cd, Cu, Co, Mn, Pb, Zn and 12 antibiotics was examined. The ability of removing Cd from solution was studied. The characterizations show that strain E1 is affiliated to Pseudomonas aeruginosa (P. aeruginosa). Strain E1 has high resistance to heavy metals and the order is found to be Cd>Mn>Zn>Cu>Pb>Co in solid media. Strain E1 also exhibits the resistance to 12 antibiotics. Both living and non-living cells of strain E1 can remove Cd from solution, and living cell has better biosorption than non-living cell.

Key words

identification P. aeruginosa cadmium-resistance screening 

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Copyright information

© Central South University Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Xiao-xi Zeng (曾晓希)
    • 1
    • 2
  • Jian-xin Tang (汤建新)
    • 2
  • Xue-duan Liu (刘学端)
    • 1
    Email author
  • Pei Jiang (蒋 佩)
    • 2
  1. 1.School of Resources Processing and BioengineeringCentral South UniversityChangshaChina
  2. 2.College of Packaging and PrintingHunan University of TechnologyZhuzhouChina

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