1887

Abstract

SUMMARY: Temperature, salinity and pH optima of the marine bacterium were determined directly in nature by use of tritiated thymidine auto-radiography and compared with the same characteristics of laboratory cultures. Field studies were done in Puget Sound, Washington, U.S.A., and Loch Ewe, Scotland. The temperature optima of cultures isolated from various sea-coast areas around the world were 28°, irrespective of the temperature of the habitat from which the culture was derived. In contrast, the temperature optima in the natural environment were significantly lower, ranging from 6.5° to 25°, depending on the habitat studied. Attempts to obtain physiological adaptation of laboratory cultures to low temperature failed. The results emphasize the danger of inferring the response to temperature of natural populations from the characteristics of laboratory cultures. In contrast, responses to salinity and pH optima in natural environments were the same as those of laboratory cultures.

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/content/journal/micro/10.1099/00221287-59-2-153
1969-12-01
2024-04-19
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References

  1. Brock T. D. 1966; The habitat of Leucothrix mucor, a widespread marine organism.. Limnol. Oceanogr 11:303
    [Google Scholar]
  2. Brock T. D. 1967; Bacterial growth rate in the sea: direct analysis by thymidine autoradiography.. Science, N. Y 155:81
    [Google Scholar]
  3. Brock M. L., Brock T. D. 1968; The application of micro-autoradiographic techniques to ecological studies.. Mitt. Internat. Verein. Limnol. No. 15.
    [Google Scholar]
  4. Brock T. D., Mandel M. 1966; Deoxyribonucelic acid base composition of geographically diverse strains of Leucothrix mucor. . J. Bact 91:1659
    [Google Scholar]
  5. Haight J. J., Morita R. Y. 1966; Some physiological differences in Vibrio marinus grown at environmental and optimal temperatures.. Limnol. Oceanogr 11:470
    [Google Scholar]
  6. Harold R., Stanier R. Y. 1955; The genera Leucothrix and Thiothrix. . Bact. Rev 19:49
    [Google Scholar]
  7. Kelly M. T. 1969 Physiological ecology and biochemical geography of Leucothrix mucor Ph.D. Thesis: Indiana University.;
    [Google Scholar]
  8. Kelly M. T., Brock T. D. 1969; A warm water strain of Leucothrix mucor. . J. Bact 98:1402
    [Google Scholar]
  9. Korngold R. R., Kushner D. J. 1968; Responses of a psychrophilic marine bacterium to changes in its ionic environment.. Can. J. Microbiol 14:253
    [Google Scholar]
  10. MacLeod R. A. 1965; The question of the existence of specific marine bacteria.. Bact. Rev 29:9
    [Google Scholar]
  11. Olsen R. H., Metcalf E. S. 1968; Conversion of mesophilic to psychrophilic bacteria.. Science, N. Y. 162:1288
    [Google Scholar]
  12. Sieburth J. McN. 1967; Seasonal selection of estuarine bacteria by water temperature.. J. exp. mar. Biol. Ecol 1:98
    [Google Scholar]
  13. Steele J. H., Baird I. E. 1968; Production ecology of a sandy beach.. Limnol. Oceanogr 13:14
    [Google Scholar]
  14. ZoBell C. E. 1946 Marine Microbiology241 Waltham, Massachusetts: Chronica Botanica.;
    [Google Scholar]
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