Bacterial biosensors for measuring availability of environmental pollutants

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Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_3926B9861EA9
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Synthèse (review): revue aussi complète que possible des connaissances sur un sujet, rédigée à partir de l'analyse exhaustive des travaux publiés.
Collection
Publications
Institution
Titre
Bacterial biosensors for measuring availability of environmental pollutants
Périodique
Sensors
Auteur⸱e⸱s
Tecon R., van der Meer J. R.
ISSN
1424-8220
Statut éditorial
Publié
Date de publication
2008
Peer-reviewed
Oui
Volume
8
Numéro
7
Pages
4062-4080
Langue
anglais
Résumé
Abstract: Traditionally, pollution risk assessment is based on the measurement of a pollutant's total concentration in a sample. The toxicity of a given pollutant in the environment, however, is tightly linked to its bioavailability, which may differ significantly from the total amount. Physico-chemical and biological parameters strongly influence pollutant fate in terms of leaching, sequestration and biodegradation. Bacterial sensorreporters, which consist of living micro-organisms genetically engineered to produce specific output in response to target chemicals, offer an interesting alternative to monitoring approaches. Bacterial sensor-reporters detect bioavailable and/or bioaccessible compound fractions in samples. Currently, a variety of environmental pollutants can be targeted by specific biosensor-reporters. Although most of such strains are still confined to the lab, several recent reports have demonstrated utility of bacterial sensing-reporting in the field, with method detection limits in the nanomolar range. This review illustrates the general design principles for bacterial sensor-reporters, presents an overview of the existing biosensor-reporter strains with emphasis on organic compound detection. A specific focus throughout is on the concepts of bioavailability and bioaccessibility, and how bacteria-based sensing-reporting systems can help to improve our basic understanding of the different processes at work.
Web of science
Open Access
Oui
Création de la notice
17/02/2009 16:44
Dernière modification de la notice
20/08/2019 13:28
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