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. 1981 May;41(5):1254–1261. doi: 10.1128/aem.41.5.1254-1261.1981

Acidophilic, Heterotrophic Bacteria of Acidic Mine Waters

Paul L Wichlacz 1, Richard F Unz 1
PMCID: PMC243898  PMID: 16345777

Abstract

Obligately acidophilic, heterotrophic bacteria were isolated both from enrichment cultures developed with acidic mine water and from natural mine drainage. The bacteria were grouped by the ability to utilize a number of organic acids as sole carbon sources. None of the strains were capable of chemolithotrophic growth on inorganic reduced iron and sulfur compounds. All bacteria were rod shaped, gram negative, nonencapsulated, motile, capable of growth at pH 2.6 but not at pH 6.0, catalase and oxidase positive, strictly aerobic, and capable of growth on citric acid. The bacteria were cultivatable on solid nutrient media only if agarose was employed as the hardening agent. Bacterial densities in natural mine waters ranged from approximately 20 to 250 cells per ml, depending upon source and culture medium. Ferric hydrates and stream vegetation contained from 1,500 to over 7 × 106 cells per g.

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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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