Competition for growth substrates in river water between Escherichia coli and indigenous bacteria illustrated by high-resolution mass spectrometry.

Letters in Applied Microbiology
Y IshiiH Furumai

Abstract

Escherichia coli normally cannot grow in the environment. One environmental stress that prevents E. coli growth may be the competition for growth substrates with co-existing micro-organisms. In this study, the growth substrates of E. coli were screened by high-resolution mass spectrometry and compared with those of indigenous bacteria in river water. In an incubation experiment, E. coli multiplied in sterilized river water, but did not multiply when indigenous micro-organisms were present in the water. By analysing dissolved organic matter in the river water before and after E. coli growth, 35 compounds were identified as putative growth substrates of E. coli. Among them, 33 compounds were also identified as putative growth substrates of indigenous bacteria. These results indicate that E. coli and indigenous bacteria compete for organic substrates in river water, which could suppress the growth of E. coli.

References

May 3, 2005·Water Research·Abirosh Chandran, A A Mohamed Hatha
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Apr 19, 2007·Environmental Science & Technology·Satoshi IshiiMichael J Sadowsky
May 30, 2008·Environmental Microbiology·Marius VitalThomas Egli
Aug 25, 2009·Applied and Environmental Microbiology·Seth T WalkThomas S Whittam
May 21, 2013·Journal of Microbiological Methods·Sam Van NevelFrederik Hammes
Sep 7, 2017·Environmental Science & Technology·Juliane HollenderP Lee Ferguson

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Citations

Apr 17, 2021·Journal of Hazardous Materials·Thi Huyen DuongSung Kyu Maeng

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