Integrated regulation of acetoin fermentation by quorum sensing and pH in Serratia
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Integrated regulation of acetoin fermentation by quorum sensing and pH in Serratia plymuthica RVH1.
During fermentation of sugars, a number of bacterial species are able to switch from mixed acid production to acetoin and 2,3-butanediol production in order to avoid lethal acidification of their environment, although the regulation of this switch is only poorly understood. In this study, we report the identification of the budAB structural operon, involved in acetoin production in Serratia ply...
متن کاملN-acyl-L-homoserine lactone quorum sensing controls butanediol fermentation in Serratia plymuthica RVH1 and Serratia marcescens MG1.
Butanediol fermentation in two Serratia species is shown to be affected by N-acyl-L-homoserine lactone-dependent quorum sensing. Knockout of quorum-sensing signal production caused a shift towards enhanced acid production, resulting in early growth arrest, which was reversible by the addition of synthetic signal molecules.
متن کاملGenome Sequence of Serratia plymuthica RVH1, Isolated from a Raw Vegetable-Processing Line
We announce the genome sequence of Serratia plymuthica strain RVH1, a psychroloterant strain that was isolated from a raw vegetable-processing line and that regulates the production of primary metabolites (acetoin and butanediol), antibiotics, and extracellular enzymes through quorum sensing.
متن کاملQuorum sensing in Serratia.
Many bacteria use cell-cell communication to monitor their population density, synchronize their behaviour and socially interact. This communication results in a coordinated gene regulation and is generally called quorum sensing. In gram-negative bacteria, the most common quorum signal molecules are acylated homoserine lactones (AHLs), although other low-molecular-mass signalling molecules have...
متن کاملFormate hydrogen lyase mediates stationary-phase deacidification and increases survival during sugar fermentation in acetoin-producing enterobacteria
Two fermentation types exist in the Enterobacteriaceae family. Mixed-acid fermenters produce substantial amounts of lactate, formate, acetate, and succinate, resulting in lethal medium acidification. On the other hand, 2,3-butanediol fermenters switch to the production of the neutral compounds acetoin and 2,3-butanediol and even deacidify the environment after an initial acidification phase, th...
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