Identification of heavy metal resistant bacteria isolated from Yangtze river, China

Qiuzhuo Zhang, Varenyam Achal*, Wei Ning Xiang, Duanchao Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Heavy metals present in the environment posses significant global problem and warrant ultimate remediation measurement. In the present study, bacteria were isolated from the Yangtze River, China and six isolates were further selected on the basis of tolerance to various heavy metals. Based on various biochemical, physiological and 16S rDNA analyses; these bacteria belonged to five distinct genera, Pseudomonas putida, Cupriavidus necator, Exiguobacterium sp., Bacillus aquimaris, B. cereus, and Alcaligenes sp. Minimum inhibitory concentration test recorded that Pseudomonas putida YR8 and Alcaligenes sp. YR11 had a high level of tolerance (between 5 and 10 mM) to the heavy metals tested. The multiple heavy-metal resistant bacteria of present study could survive well in the heavy metal contaminated environment and thus can be exploited for the remediation of metals from such environment.

Original languageEnglish
Pages (from-to)619-623
Number of pages5
JournalInternational Journal of Agriculture and Biology
Volume16
Issue number3
StatePublished - 2014
Externally publishedYes

Keywords

  • 16S rRNA
  • Bacillus aquimaris
  • Cupriavidus necator
  • Heavy metals
  • Pseudomonas putida

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