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Marozava, S. ; Vargas-López, R.* ; Tian, Y.* ; Merl-Pham, J. ; Braster, M.* ; Meckenstock, R.U. ; Smidt, H.* ; Röling, W.F.M.* ; Westerhoff, H.V.*

Metabolic flexibility of a prospective bioremediator: Desulfitobacterium hafniense Y51 challenged in chemostats.

Environ. Microbiol. 20, 2652-2669 (2018)
Postprint DOI PMC
Open Access Green
Desulfitobacterium hafniense Y51 has been widely used in investigations of perchloroethylene (PCE) biodegradation, but limited information exists on its other physiological capabilities. We investigated how D. hafniense Y51 confronts the debilitating limitations of not having enough electron donor (lactate), or electron acceptor (fumarate) during cultivation in chemostats. The residual concentrations of the substrates supplied in excess were much lower than expected. Transcriptomics, proteomics and fluxomics were integrated to investigate how this phenomenon was regulated. Through diverse regulation at both transcriptional and translational levels, strain Y51 turned to fermenting the excess lactate and disproportionating the excess fumarate under fumarate- and lactate-limiting conditions respectively. Genes and proteins related to the utilization of a variety of alternative electron donors and acceptors absent from the medium were induced, apparently involving the Wood-Ljungdahl pathway. Through this me tabolic flexibility, D. hafniense Y51 may be able to switch between different metabolic capabilities under limiting conditions.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Complete Genome Sequence; Sp Strain Y51; Saccharomyces-cerevisiae; Continuous-culture; Dehalococcoides-ethenogenes; Dechlorinating Bacterium; Geobacter-sulfurreducens; Peptide Identification; Transcriptome Analysis; Gene-expression
ISSN (print) / ISBN 1462-2912
e-ISSN 1462-2920
Zeitschrift Environmental Microbiology
Quellenangaben Band: 20, Heft: 7, Seiten: 2652-2669 Artikelnummer: , Supplement: ,
Verlag Wiley
Verlagsort 111 River St, Hoboken 07030-5774, Nj Usa
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Groundwater Ecology (IGOE)
CF Metabolomics & Proteomics (CF-MPC)