The toxicity of copper to the marine bacterium Vibrio alginolyticus

D. R. Schreiber, A. S. Gordon, F. J. Millero

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

The toxicity of copper to the marine bacterium Vibrio alginolyticus was examined. Experiments were conducted with both aerobic and anaerobic cultures. Calorimetric and radiochemical techniques were used to examine the effect of copper on heat production, respiration, and carbon assimilation by the cultures. Plate counts were used to determine the number of viable cells present. Copper was more toxic to the bacterium in anaerobic culture (mean toxic concentration (TC50) = 2.1 μM)) than in aerobic culture (TC50 = 6.4 μM). Both cytotoxic and cytostatic effects were observed. The cytotoxic effect was not significantly different under aerobic and anaerobic conditions. The cytostatic effect, observed only in anaerobic culture, resulted in a decrease in the rate of metabolism of the surviving cells. The magnitude of the cytostatic and cytotoxic effects were dependent on the copper concentration, exhibiting saturation at higher concentrations. Organic chelators EDTA and nitrilotriacetic acid protected the anaerobic cultures from the copper, indicating that Cu-organic complexes are not toxic to the organism.

Original languageEnglish (US)
Pages (from-to)83-87
Number of pages5
JournalCanadian Journal of Microbiology
Volume31
Issue number1
DOIs
StatePublished - Jan 1 1985

ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Genetics

Fingerprint Dive into the research topics of 'The toxicity of copper to the marine bacterium Vibrio alginolyticus'. Together they form a unique fingerprint.

  • Cite this