Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 540992
Title Metabolic flexibility of a prospective bioremediator: Desulfitobacterium hafniense Y51 challenged in chemostats
Author(s) Marozava, Sviatlana; Vargas-López, Raquel; Tian, Ye; Merl-Pham, Juliane; Braster, Martin; Meckenstock, Rainer U.; Smidt, Hauke; Röling, Wilfred F.M.; Westerhoff, Hans V.
Source Environmental Microbiology 20 (2018)7. - ISSN 1462-2912 - p. 2652 - 2669.
Department(s) Microbiology
Publication type Refereed Article in a scientific journal
Publication year 2018
Abstract 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 metabolic flexibility, D. hafniense Y51 may be able to switch between different metabolic capabilities under limiting conditions. This article is protected by copyright. All rights reserved.
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