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. 1969 Feb;17(2):208–213. doi: 10.1128/am.17.2.208-213.1969

Predominant Catalase-negative Soil Bacteria. I. Streptococcal Population Indigenous to Soil1

William E Gledhill a, L E Casida Jr a
PMCID: PMC377650  PMID: 5775904

Abstract

Streptococci related to Streptococcus sanguis were shown to represent a major segment of the bacterial flora of certain soils. Upon initial isolation, these streptococci were quite pleomorphic and displayed morphological characteristics common to several other genera of bacteria, but after prolonged cultivation on laboratory media the isolates demonstrated a typical streptococcal morphology. It was proposed that a requirement for correction of the control mechanisms affecting growth rate and cell wall synthesis in part might explain the difficulty encountered in isolation of these organisms from soil and their initial pleomorphism and cultural instability. The possible role of these soil organisms as etiological agents of disease and the occurrence of other groups of streptococci in soil were discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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