1887

Abstract

Summary: Bacteria which were resistant to streptomycin and rose bengal were preferentially stimulated in the rhizospheres of several plant species as compared with those in the soil away from the rhizosphere. Leguminous plants were the most effective and clover plants as young as 6 days had some effect. The separate and combined effects of rose bengal and streptomycin in the isolation medium were examined. Rose bengal alone had little effect on bacterial numbers, whereas streptomycin alone decreased them. The two substances together affected rhizosphere numbers strikingly but inconsistently. The bacteria from rhizosphere and soil were grouped according to their nutritional requirements. Chromogenic bacteria with simple requirements were the most abundant forms resistant to streptomycin + rose bengal in the rhizosphere and a species of was especially favoured.

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/content/journal/micro/10.1099/00221287-24-3-369
1961-03-01
2021-10-20
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References

  1. Bakerspigel A., Miller J. J. 1953; Comparison of ox gall, crystal violet, streptomycin and penicillin as bacterial growth inhibitors in plating of soil fungi. Soil Sci 76:123
    [Google Scholar]
  2. Bergey’s Manual of Determinative Bacteriology 1957, 7th ed. Breed R. S., Murray E. G. D., Smith N. R. Ed London: Baillière, Tindall and Cox;
  3. Brian P. W. 1957; The ecological significance of antibiotic production. Symp. Soc. gen. Microbiol 7:168
    [Google Scholar]
  4. Lochhead A. G. 1948; Incidence of chromogenic types in the rhizosphere noted within genus Arthrobacter . J. Bact 55:185
    [Google Scholar]
  5. Lochhead A. G., Chase F. E. 1943; Qualitative studies of soil microorganisms: V. Nutritional requirements of the predominant bacterial flora. Soil Sci 55:185
    [Google Scholar]
  6. Lochhead A. G., Thexton R. H. 1947; Qualitative studies of soil micro-organisms: VII. The ‘rhizosphere effect’ in relation to the amino acid nutrition of bacteria. Canad. J. Res C25:20
    [Google Scholar]
  7. Martin J. P. 1950; Use of acid, rose bengal and streptomycin in the soil plating method for estimating soil fungi. Soil Sci 69:215
    [Google Scholar]
  8. Peterson E. A. 1957 Studies on rhizosphere fungi Ph.D. Thesis University of London:
    [Google Scholar]
  9. Rovira A. D. 1956; Plant root excretions in relation to the rhizosphere effect. I. The nature of root exudate from oats and peas. Plant & Soil 8:178
    [Google Scholar]
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