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Characterization of marine bacteria highly resistant to mercury exhibiting multiple resistances to toxic chemicals

DRS at CSIR-National Institute of Oceanography

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Title Characterization of marine bacteria highly resistant to mercury exhibiting multiple resistances to toxic chemicals
 
Creator De, J.
Ramaiah, N.
 
Subject Marine Bacteria
Heavy metals
 
Description Several strains of bacteria unusually highly resistant to mercury were isolated from seawater and marine sediment samples and identified by 16S rDNA sequencing and were also characterized by a battery of biochemical and morphological tests. The bacterial isolates were identified to belong to the genera Pseudomonas, Alcaligenes, Brevibacterium and Bacillus. Many of the chosen isolates were tested for growth in the presence of different heavy metals and a variety of xenobiotics. Growth curves of all six bacteria highly resistant to mercury examined for growth at different concentrations of Hg exhibited prolonged lag phase, during which time necessary physiological adaptations to toxic milieu were undergone. All the strains tested for antibiotic resistance showed little to no effect of antibiotics on their normal growth. Results of this study demonstrate the occurrence of diverse groups of marine prokaryotes capable of high tolerance to mercury with a potential to degrade a variety of toxic heavy metals and xenobiotics.
 
Date 2007-04-13T04:33:10Z
2007-04-13T04:33:10Z
2007
 
Type Journal Article
 
Identifier Ecological Indicators, vol.7(3), 511-520p.
http://drs.nio.org/drs/handle/2264/576
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2007] Elsevier
 
Format 371955 bytes
application/pdf
 
Publisher Elsevier