Estimation of growth inhibition by copper and cadmium in heavy metal tolerant actinomycetes

A new isothermic model of actinomycetes growth in presence of toxic concentrations of Cd2+ and Cu2+ is described. Microbial growth inhibition, displayed as a decrease of biomass, can be correlated with the increase of cadmium(II) or copper(II) concentration in the medium. The reciprocal dry biomass...

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Veröffentlicht in:	Journal of basic microbiology 2002-08, Vol.42 (4), p.231-237
Hauptverfasser:	Amoroso, María J., Oliver, Guillermo, Castro, Guillermo R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Actinomycetales - drug effects Actinomycetales - growth & development Cadmium - pharmacology Copper - pharmacology Culture Media Drug Resistance, Bacterial Mathematics Metals, Heavy - pharmacology Microbial Sensitivity Tests Models, Biological
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Zusammenfassung:	A new isothermic model of actinomycetes growth in presence of toxic concentrations of Cd2+ and Cu2+ is described. Microbial growth inhibition, displayed as a decrease of biomass, can be correlated with the increase of cadmium(II) or copper(II) concentration in the medium. The reciprocal dry biomass against metal concentration showed a linear correlation higher than 0.9 in tested strains. The mathematical model can be useful to predict the behavior of actinomycetes at inhibitory concentrations of copper(II) and cadmium(II) in large screening procedures.
ISSN:	0233-111X 1521-4028
DOI:	10.1002/1521-4028(200208)42:4<231::AID-JOBM231>3.0.CO;2-H