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Enterobacter cloacae SLD1a-1 gains a selective advantage from selenate reduction when growing in nitrate-depleted anaerobic environments

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Τίτλος: Enterobacter cloacae SLD1a-1 gains a selective advantage from selenate reduction when growing in nitrate-depleted anaerobic environments
Συγγραφείς: Leaver JT, Richardson DJ, Butler CS
Πηγή: Journal of Industrial Microbiology and Biotechnology, 01-05-2008
Στοιχεία εκδότη: Springer
Έτος έκδοσης: 2008
Συλλογή: Newcastle University Library ePrints Service
Περιγραφή: Enterobacter cloacae SLD1a-1 is capable of the complete reduction of selenate to selenium and the initial reaction is catalysed by a membrane-bound selenate reductase. In the present study, continuous culture experiments were employed to investigate the possibility that selenate reduction, via the selenate reductase, might provide sufficient energy to maintain cell viability when deprived of the preferred anaerobic terminal electron acceptor nitrate. The evidence presented indicates that the selenate reductase supports slow growth that retards the wash-out of the culture when switching to nitrate-depleted selenate-rich medium, and provides a proton motive force for sustained cell maintenance. In contrast, a strain of E. cloacae (sub sp. cloacae) that does not readily reduce selenate, cannot sustain cell maintenance when switching to a selenate-rich medium. This work demonstrates for the first time that respiratory linked selenate reduction gives E. cloacae SLD1a-1 a selective advantage when inhabiting selenate-contaminated environments and highlights the suitability of utilising E. cloacae SLD1a-1 when developing selenium remediation strategies. © 2008 Society for Industrial Microbiology.
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Relation: https://eprints.ncl.ac.uk/77383
Διαθεσιμότητα: https://eprints.ncl.ac.uk/77383
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  Data: Enterobacter cloacae SLD1a-1 gains a selective advantage from selenate reduction when growing in nitrate-depleted anaerobic environments
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  Data: <searchLink fieldCode="AR" term="%22Leaver+JT%22">Leaver JT</searchLink><br /><searchLink fieldCode="AR" term="%22Richardson+DJ%22">Richardson DJ</searchLink><br /><searchLink fieldCode="AR" term="%22Butler+CS%22">Butler CS</searchLink>
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  Data: Journal of Industrial Microbiology and Biotechnology, 01-05-2008
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  Data: Enterobacter cloacae SLD1a-1 is capable of the complete reduction of selenate to selenium and the initial reaction is catalysed by a membrane-bound selenate reductase. In the present study, continuous culture experiments were employed to investigate the possibility that selenate reduction, via the selenate reductase, might provide sufficient energy to maintain cell viability when deprived of the preferred anaerobic terminal electron acceptor nitrate. The evidence presented indicates that the selenate reductase supports slow growth that retards the wash-out of the culture when switching to nitrate-depleted selenate-rich medium, and provides a proton motive force for sustained cell maintenance. In contrast, a strain of E. cloacae (sub sp. cloacae) that does not readily reduce selenate, cannot sustain cell maintenance when switching to a selenate-rich medium. This work demonstrates for the first time that respiratory linked selenate reduction gives E. cloacae SLD1a-1 a selective advantage when inhabiting selenate-contaminated environments and highlights the suitability of utilising E. cloacae SLD1a-1 when developing selenium remediation strategies. © 2008 Society for Industrial Microbiology.
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      – TitleFull: Enterobacter cloacae SLD1a-1 gains a selective advantage from selenate reduction when growing in nitrate-depleted anaerobic environments
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