1887

Abstract

Summary: Intraspecific transformation in three strains of was observed with respect to gelatin liquefaction and chlortetracycline resistance. In interspecific transformation experiments involving 23 pairs of strains and four markers, two yielded positive results: a strain of acquired the property of gelatin liquefaction when transformed with DNA, and a strain of fish Pseudomonas, incapable of growing at 37 °C, did so when transformed with DNA from another strain of . The guanine-cytosine content of the DNA of the strains investigated ranged between 61·0 and 64·4 mol %. The transforming ability of DNA was destroyed by DNase. The divalent ions Mg, Ca and Ba improved transformation frequency several fold. Actinomycin D inhibited transformation.

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/content/journal/micro/10.1099/00221287-83-2-251
1974-08-01
2024-04-24
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