Journal
FEMS MICROBIOLOGY ECOLOGY
Volume 84, Issue 1, Pages 24-34Publisher
OXFORD UNIV PRESS
DOI: 10.1111/1574-6941.12033
Keywords
Biolog GN2 MicroPlates; metabolic fingerprint; synergism; bacterial consortium
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Funding
- IWT, Agency for Innovation by Science and Technology [SB/73381]
- KU Leuven [OT10/03]
- Inter-University Attraction Pole (IUAP) of the Belgian Science Policy (BELSPO) [P7/25]
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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 GN2 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.
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