1887

Abstract

SUMMARY

Very numerous small transparent colonies appeared on plates of nitrogen-poor agar inoculated with soils from various places in Rhodesia. Eighty-three cultures of bacteria were isolated from these colonies, all but two of them small Gram-negative rods. Two cultures contained Gram-positive cocci. Thirty-nine of the isolates fixed nitrogen, ten of them fixing as much as or more than a Beijerinckia culture grown under the same conditions. The Gram-negative isolates are not all alike; their identity is uncertain, but some might be Pseudomonas species, some Achromobacter (or Acinetobacter), and one good fixer might be a Flavobacterium. There are also a few isolates which attack glucose fermentatively. Nitrogen-fixers of these types—aerobic bacteria with very small colonies—appear to be numerous and widely distributed in Rhodesian soils.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-50-3-487
1968-03-01
2024-04-24
Loading full text...

Full text loading...

/deliver/fulltext/micro/50/3/mic-50-3-487.html?itemId=/content/journal/micro/10.1099/00221287-50-3-487&mimeType=html&fmt=ahah

References

  1. Anderson G. R. 1955; Nitrogen fixation by Pseudomonas-like soil bacteria. J. Bact 70:129
    [Google Scholar]
  2. Brown M. E., , Burlingham S. K., Jackson R. M. 1962; Studies on Azotobacter species in soil. 1. Comparison of media and techniques for counting Azotobacter in soil. Plant &Soil 17:309
    [Google Scholar]
  3. Conway E. J. 1950 Microdiffusion Analysis and Volumetric Error, 3. London: Crosby Lockwood;
    [Google Scholar]
  4. Cowan S. T., Steel K. J. 1965 Manual for the Identification of Medical Bacteria Cambridge University Press;
    [Google Scholar]
  5. Jensen H. L. 1940; Contributions to the nitrogen economy of Australian wheat soils, with particular reference to New South Wales. Proc. Linn. Soc. NSW 651
    [Google Scholar]
  6. Jensen H. L. 1954; The Azotobacteriaceae. Bact. Rev 18:195
    [Google Scholar]
  7. Jensen H. L., , Petersen E. J., , De P. K., Bhattacharya R. 1960; A new nitrogen-fixing bacterium; Derxia gummosa, nov.gen. nov.sp. Arch. Mikrobiol 36:182
    [Google Scholar]
  8. Jensen V. 1956; Nitrogen fixation by strains of Aerobacter aerogenes . Physiol. Plant 9:130
    [Google Scholar]
  9. Mahl M. C, , Wilson P. W., , Fife M. A., Ewing W. K. 1965; Nitrogen fixation by members of the tribe Klebsiellae. J. Bact 89:1482
    [Google Scholar]
  10. Meiklejohn J. 1940; Aerobic denitrification. Ann. appl. Biol 27:558
    [Google Scholar]
  11. Meiklejohn J. 1965; Microbiological studies on large termite mounds. Rhod. Zamb. Mai. J. agric. Res 3:67
    [Google Scholar]
  12. Meiklejohn J. 1967; Microbiological observations on an experiment with compost. Rhod. Zamb. Mai. J. agric. Res 5:43
    [Google Scholar]
  13. Proctor M. H., Wilson P. W. 1958; Nitrogen fixation by Gram-negative bacteria. Nature, Lond 182:891
    [Google Scholar]
  14. Skinner C. E. 1928; The fixation of nitrogen by Bacterium aerogenes and related species. Soil Sci 25:195
    [Google Scholar]
  15. Stapp C. 1940; Azotomonas insolita, ein neuer aerober stickstoffbindender Mikroorganismus. Zentbl. Bakt. II. Abt 102:1
    [Google Scholar]
  16. Voets J. P., Debacker J. 1956; Pseudomonas azotogensis nov.sp., a new free-living nitrogen-fixing bacterium. Naturwiss 43:50
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-50-3-487
Loading
/content/journal/micro/10.1099/00221287-50-3-487
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error