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| Author(s): | Grula, Mary M.;
Huang, May-Lin;
Sewell, Guy |
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| Author Affiliation: | Grula: Department of Microbiology and Molecular Genetics, Oklahoma State University; Huang: National Chung-Hsing University, Taichung, Taiwan, Republic of China; Sewell: U.S. Environmental Protection Agency, Oklahoma |
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| Title: | Interactions of certain polyacrylamides with soil bacteria |
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| Source: | Soil Science. Vol. 158, No. 4, October 1994, p. 291-300. |
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| Publishing Information: | Baltimore, MD: Williams and Wilkins Company |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Polyacrylamides; Soil microorganisms; Bacteria; Interactions; Polymers; Nitrogen; Ammonia; Growth; Biodegradation; Pseudomonas; Iron
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| Abstract/Contents: | "Polyacrylamides (PAMs) are xenobiotic polymers consisting of covalently linked carbon atoms (-CH₂-CH₂), unlike the anhydro bonds of many biological polymers. Although the carbon chains are resistant to microbial breakdown, field observations by people in the oil industry support the notion that polyacrylamides can somehow stimulate the growth of microorganisms. This paper presents data indicating that PAMs can provide nitrogen (as ammonia) for several species of Pseudomonas isolated from soil. Growth in a defined medium can be sustained over several transfers in a chemically defined medium with no added NH₄Cl. The level of growth attained was less (≅25-50%) than that with NH₄Cl. No change in the viscoelastic property (screen factor) of the PAM occurred. Growth of sulfate-reducing bacteria is also stimulated by polyacrylamides, with a loss of screen factor of the polymer solution accompanying the growth. To some extent this is because the polymer serves as a nitrogen source, but another factor, in the case of SRBs, is the ability of the polymer to serve as an incomplete substrate (mixotrophic growth)." |
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| Language: | English |
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| References: | 19 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Grula, M. M., M.-L. Huang, and G. Sewell. 1994. Interactions of certain polyacrylamides with soil bacteria. Soil Science. 158(4):p. 291-300. |
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