Development of a bioluminescent cyanobacterial reporter strain for detection of arsenite, arsenate and antimonite

Loredana Peca, Csaba István Nagy, Attila Ôrdog, I. Vass, P. Kós

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the present study the potential of a gene fusion between the arsB promoter from Synechocystis 6803 and the bacterial luxAB genes was evaluated to be used as a cyanobacterial bioreporter for monitoring the bioavailability of inorganic arsenic species. A whole-cell bioreporter strain, designated arsLux, was constructed based on this fusion. In concert with the specificity of the promoter presented earlier, luminescent signal could be detected upon exposure to arsenite, arsenate and antimonite, in a concentration-dependent manner, following an incubation period of 14 hours. The detection range of arsLux was 4 μM to 1 mM for As(III) and Sb(III), and 150 μM to 150 mM for As(V). However, arsLux activity was inhibited by Cu2+ and Zn2+ with a half maximal inhibitory concentration (IC50) of about 8 μM and 16 μM, respectively. The bioreporter performance was tested using water samples from a thermal spring and from the River Tisza, both of them supplemented with arsenite. In the first case the bioluminescent signal was comparable with the signal of the standard solution, whereas in the second case the signal was much lower, presumably due to inhibitors present in the river water. Our data show the arsB promoter has the potential for whole cell bioreporter applications with some further improvements that are also discussed.

Original languageEnglish
Pages (from-to)2443-2450
Number of pages8
JournalEnvironmental Engineering and Management Journal
Volume16
Issue number11
Publication statusPublished - Nov 1 2017

Fingerprint

stibnite
arsenite
arsenate
Fusion reactions
Genes
Geothermal springs
Rivers
Arsenic
Water
Monitoring
gene
thermal spring
bioavailability
river water
inhibitor
arsenic
incubation
detection
monitoring
river

Keywords

  • Antimony
  • Arsenic
  • Bioluminescent bioreporter
  • Cyanobacteria
  • Synechocystis PCC 6803

ASJC Scopus subject areas

  • Environmental Engineering
  • Pollution
  • Management, Monitoring, Policy and Law

Cite this

Development of a bioluminescent cyanobacterial reporter strain for detection of arsenite, arsenate and antimonite. / Peca, Loredana; Nagy, Csaba István; Ôrdog, Attila; Vass, I.; Kós, P.

In: Environmental Engineering and Management Journal, Vol. 16, No. 11, 01.11.2017, p. 2443-2450.

Research output: Contribution to journalArticle

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