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Predation of bacteria by the protozoa Tetrahymena pyriformis in toluene-degrading cultures

Publication ,  Journal Article
Cox, HHJ; Nguyen, TT; Deshusses, MA
Published in: Biotechnology Letters
January 1, 1999

The influence of the toluene concentration on predation of tuluene-degrading bacteria by the protozoa Tetrahymena pyriformis was investigated in suspended batch cultures continuously aerated with toluene-contaminated air. At gas phase concentrations of 0.035 to 0.74 g m-3, toluene did not significantly affected protozoan activity and the final bacteria concentration was reduced by growing protozoa by 98 to 99.9% compared to protozoa-free controls. As the toluene concentration was increased to 1.16-1.33 g m-3, the reduction of the bacteria cell concentration was 80%. At 3.35 g toluene m-3, growth of T. pyriformis was completely inhibited. Overall, the results presented herein demonstrate that protozoa grazing on bacteria play a major role in controlling bacterial cell concentration, but that the toxicity of the treated pollutants to the protozoa is an important factor that needs to be taken into account in biological treatment processes.

Duke Scholars

Published In

Biotechnology Letters

DOI

ISSN

0141-5492

Publication Date

January 1, 1999

Volume

21

Issue

3

Start / End Page

235 / 239

Related Subject Headings

  • Biotechnology
  • 40 Engineering
  • 31 Biological sciences
  • 10 Technology
  • 09 Engineering
  • 06 Biological Sciences
 

Citation

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MLA
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Cox, H. H. J., Nguyen, T. T., & Deshusses, M. A. (1999). Predation of bacteria by the protozoa Tetrahymena pyriformis in toluene-degrading cultures. Biotechnology Letters, 21(3), 235–239. https://doi.org/10.1023/A:1005488500328
Cox, H. H. J., T. T. Nguyen, and M. A. Deshusses. “Predation of bacteria by the protozoa Tetrahymena pyriformis in toluene-degrading cultures.” Biotechnology Letters 21, no. 3 (January 1, 1999): 235–39. https://doi.org/10.1023/A:1005488500328.
Cox HHJ, Nguyen TT, Deshusses MA. Predation of bacteria by the protozoa Tetrahymena pyriformis in toluene-degrading cultures. Biotechnology Letters. 1999 Jan 1;21(3):235–9.
Cox, H. H. J., et al. “Predation of bacteria by the protozoa Tetrahymena pyriformis in toluene-degrading cultures.” Biotechnology Letters, vol. 21, no. 3, Jan. 1999, pp. 235–39. Scopus, doi:10.1023/A:1005488500328.
Cox HHJ, Nguyen TT, Deshusses MA. Predation of bacteria by the protozoa Tetrahymena pyriformis in toluene-degrading cultures. Biotechnology Letters. 1999 Jan 1;21(3):235–239.
Journal cover image

Published In

Biotechnology Letters

DOI

ISSN

0141-5492

Publication Date

January 1, 1999

Volume

21

Issue

3

Start / End Page

235 / 239

Related Subject Headings

  • Biotechnology
  • 40 Engineering
  • 31 Biological sciences
  • 10 Technology
  • 09 Engineering
  • 06 Biological Sciences