Bioavailability and toxicity of soil particle-associated copper as determined by two bioluminescent Pseudomonas fluorescens biosensor strains

We report the development and application of a novel, solid phase–contact bioassay based on two whole‐cell bacterial biosensor strains. Our data indicate that a significant fraction of particle‐associated Cu may be available to bacteria in dilute soil suspensions but also support the conventional vi...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 2006-07, Vol.25 (7), p.1738-1741
Main Authors: Brandt, Kristian K., Holm, Peter E., Nybroe, Ole
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Bacteria
Bioassays
Bioavailability
Biological and medical sciences
Biological Availability
Biosensing Techniques - methods
Biosensor
Biosensors
Chemicals
Copper
Copper - metabolism
Copper - toxicity
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
General aspects
Luminescence
Pseudomonas fluorescens
Pseudomonas fluorescens - drug effects
Pseudomonas fluorescens - metabolism
Soil
Soil Pollutants - isolation & purification
Soil Pollutants - metabolism
Soil Pollutants - toxicity
Soils
Trace metals
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Summary:We report the development and application of a novel, solid phase–contact bioassay based on two whole‐cell bacterial biosensor strains. Our data indicate that a significant fraction of particle‐associated Cu may be available to bacteria in dilute soil suspensions but also support the conventional view that mainly the soluble fraction of Cu is directly available to bacteria under more realistic soil conditions.
ISSN:0730-7268
1552-8618
DOI:10.1897/05-558R.1