Low-substrate regulated microaerophilic behavior as a stress response of aquatic and soil bacteria
Document Type
Article
Department or Administrative Unit
Biological Sciences
Publication Date
8-2000
Abstract
Low-substrate regulated microaerophilic behavior (LSRMB) was observed in 10–54% of the bacteria isolated from several fresh-water lakes or ponds, subsurface soils, activated sludge, and Antarctic dry valley soils. Five Pseudomonas and two Bacillus type species showed LSRMB. A subsurface Pseudomonas jessenii strain was used as a model to show the metabolic interaction between substrate and oxygen concentrations, cell band movement, and the appearance of unique stress lipids and proteins. When the oxygen in the P. jessenii culture medium was increased from 11% to 100% saturation under atmospheric condition, the concentration of 17:0 cyclopropane fatty acid, a stress indicator, increased five-fold, and four unique proteins were also detected. This stress response occurred only in low-substrate media. It is our hypothesis that LSRMB is a common but under-appreciated trait of many aquatic and soil bacteria.
Recommended Citation
Mazumder, R., Pinkart, H. C., Alban, P. S., Phelps, T. J., & Benoit, R. E. (2000). Low-Substrate Regulated Microaerophilic Behavior as a Stress Response of Aquatic and Soil Bacteria. Current Microbiology, 41(2), 79–83. https://doi.org/10.1007/s002840010097
Journal
Current Microbiology
Rights
© Springer-Verlag New York Inc. 2000
Comments
This article was originally published in Current Microbiology. The full-text article from the publisher can be found here.
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