Evaluation of the Ecotoxicity of Pollutants with Bioluminescent Microorganisms
Abstract
This chapter deals with the use of bioluminescent microorganisms in environmental monitoring, particularly in the assessment of the ecotoxicity of pollutants. Toxicity bioassays based on bioluminescent microorganisms are an interesting complement to classical toxicity assays, providing easiness of use, rapid response, mass production, and cost effectiveness. A description of the characteristics and main environmental applications in ecotoxicity testing of naturally bioluminescent microorganisms, covering bacteria and eukaryotes such as fungi and dinoglagellates, is reported in this chapter. The main features and applications of a wide variety of recombinant bioluminescent microorganisms, both prokaryotic and eukaryotic, are also summarized and critically considered. Quantitative structure-activity relationship models and hormesis are two important concepts in ecotoxicology; bioluminescent microorganisms have played a pivotal role in their development. As pollutants usually occur in complex mixtures in the environment, the use of both natural and recombinant bioluminescent microorganisms to assess mixture toxicity has been discussed. The main information has been summarized in tables, allowing quick consultation of the variety of luminescent organisms, bioluminescence gene systems, commercially available bioluminescent tests, environmental applications, and relevant references.
Graphical Abstract
Keywords
Bioluminescent microorganisms Environmental monitoring Genetically modified microorganisms Mixture toxicity Pollutants Toxicity bioassaysAbbreviations
- ASTM
American Society for Testing and Materials
- BETEX
Benzene, toluene, ethylbenzene and xylene
- CA
Concentration addition
- CCD
Charge-coupled device
- CHAs
Chlorinated aliphatic hydrocarbons
- CI
Combination index
- DCP
Dichlorophenol
- EC50
Effective concentration of pollutant that inhibits the toxicity endpoint by 50 %
- GC-MS
Gas chromatography-mass spectrometry
- HA
Humic acids
- HOMO
Highest occupied molecular orbital
- HPLC-MS
High-performance liquid chromatography-mass spectrometry
- IA
Independent action
- ICP-MS
Inductively coupled plasma-mass spectrometry
- INFCIM
Integrated fuzzy concentration addition-independent action model
- ISO
International Organization for Standardization
- Kow
n-octanol water partition coefficient
- LC-MS
Liquid chromatography–mass spectrometry
- LUMO
Lowest occupied molecular orbital
- MOA
Mechanism of toxic action
- MODEL KEY
Models for assessing and forecasting the impact of environmental key pollutants of freshwaters marine ecosystems and bioavailability
- NOECs
No observed effect concentrations
- PAHs
Policyclic aromatic hydrocarbons
- PCP
Pentachlorophenol
- PVA
Polivinyl alcohol
- TBT
Tributyltin
- TCA
Trichloroethane
- TCE
Trichloroethene
- TCP
Trichlorophenol
- TEQs
Toxic equivalency factors
- TPT
Triphenyltin
- TU
Toxic units
- OCDE
Organization for economic cooperation and development
- QSAR
Quantitative structure-activity relationship
- USEPA
U.S. Environmental Protection Agency
- WARUS
Weak acid respiratory uncouplers
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