Open AccessCarbon source utilization profiles suggest additional metabolic interactions in a synergistic linuron‐degrading bacterial consortium
Author(s) -
Horemans Benjamin,
Smolders Erik,
Springael Dirk
Publication year - 2013
Publication title -
fems microbiology ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.377
H-Index - 155
eISSN - 1574-6941
pISSN - 0168-6496
DOI - 10.1111/1574-6941.12033
Subject(s) - biology , carbon source , bacteria , microbial consortium , metabolism , microbiology and biotechnology , biochemistry , food science , microorganism , genetics
A bacterial triple‐species consortium that synergistically metabolizes the phenylurea herbicide linuron was studied to determine whether synergy is extended toward the metabolism of other C ‐sources. The metabolic performance and range of the individual consortium members were compared with those of paired and three‐species combinations in Biolog GN 2 MicroPlate assays. The strain combinations showed an increase in the rate and extent of utilization of 80% of the C ‐sources that were utilized by either one or more of the individual consortium members and the additional utilization of eight C ‐sources for which oxidation was not observed for the individual strains. When one of the three strains was replaced by bacterial strains ‘foreign’ to the consortium, either belonging to the same genus or to other genera, mainly antagonistic effects occurred. The data suggest that the consortium members cooperate in the metabolism of C ‐sources in addition to linuron. This feature can contribute in consolidating consortium composition when linuron is absent or present at low concentrations.